Pub Date : 2019-03-01DOI: 10.1109/SPIN.2019.8711704
Abhishek Tyagi, Asmita Singh, Paurush Bhulania
In the present scenario, there are multiple results to demonstrated the pros of one or more relay nodes help in generating communication in a wireless network. But in experimental scenarios, all nodes do not take participate in every transmission of information; so, we required the number of protocols for partner selection of nodes for generating the proper cooperation. For a cooperative diversity merits, many protocols are needed to provide a transmitting scenario to each and every user nodes with their respective partners that help in decoding the user information with high-SNR probability. Consider that, due to the unwanted noise or disturbances user can not able to transmit the information to their desired destination nodes. So, for the proper transmission without any interferences, user nodes takes the help of ‘n’ other nodes (called relays).
{"title":"Partner Selection Based on Different Protocols in Cooperative Network by Using Nakagami-M Function","authors":"Abhishek Tyagi, Asmita Singh, Paurush Bhulania","doi":"10.1109/SPIN.2019.8711704","DOIUrl":"https://doi.org/10.1109/SPIN.2019.8711704","url":null,"abstract":"In the present scenario, there are multiple results to demonstrated the pros of one or more relay nodes help in generating communication in a wireless network. But in experimental scenarios, all nodes do not take participate in every transmission of information; so, we required the number of protocols for partner selection of nodes for generating the proper cooperation. For a cooperative diversity merits, many protocols are needed to provide a transmitting scenario to each and every user nodes with their respective partners that help in decoding the user information with high-SNR probability. Consider that, due to the unwanted noise or disturbances user can not able to transmit the information to their desired destination nodes. So, for the proper transmission without any interferences, user nodes takes the help of ‘n’ other nodes (called relays).","PeriodicalId":344030,"journal":{"name":"2019 6th International Conference on Signal Processing and Integrated Networks (SPIN)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115884025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-01DOI: 10.1109/SPIN.2019.8711645
Shadman Rafid, Fahim Redwan, Ahanaf Hossain Abrar, Shah Nazir Uddin Ahmed, B. B. Pathik
This article presents the monitoring of water quality by means of wireless sensor technology that is powered by solar energy. The different constituents of water example pH level, turbidity, water level are measured by means of sensors that are powered by solar energy. The information from the sensors are gathered and afterward sent to the cloud server by means of WiFi module. The collected data is further analyzed, shown in visual format in LCD and graphical comprehension is demonstrated via ThingSpeak. In the remote areas, the quality of water is displayed in LCDS. If after analyzing the properties the water quality appears to be negative, necessary steps can be taken.
{"title":"Water Quality Monitoring System: A Sustainable Design","authors":"Shadman Rafid, Fahim Redwan, Ahanaf Hossain Abrar, Shah Nazir Uddin Ahmed, B. B. Pathik","doi":"10.1109/SPIN.2019.8711645","DOIUrl":"https://doi.org/10.1109/SPIN.2019.8711645","url":null,"abstract":"This article presents the monitoring of water quality by means of wireless sensor technology that is powered by solar energy. The different constituents of water example pH level, turbidity, water level are measured by means of sensors that are powered by solar energy. The information from the sensors are gathered and afterward sent to the cloud server by means of WiFi module. The collected data is further analyzed, shown in visual format in LCD and graphical comprehension is demonstrated via ThingSpeak. In the remote areas, the quality of water is displayed in LCDS. If after analyzing the properties the water quality appears to be negative, necessary steps can be taken.","PeriodicalId":344030,"journal":{"name":"2019 6th International Conference on Signal Processing and Integrated Networks (SPIN)","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124496223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-01DOI: 10.1109/SPIN.2019.8711686
Deepak Gaur, M. Lowenberg, M. Prasad
This work is aimed at evaluating the extent to which numerical bifurcation analysis tools can contribute to the determination of Regions of Attraction (ROA) for stable solutions of a dynamical system. The focus is on different flight scenarios within a safe flight envelope for a mathematical model of an airliner, aimed at being able to contribute to the assessment of aircraft control law designs. The implications of the study can be applied to other similar dynamical systems. In a multi-dimensional nonlinear system, computation of an exact ROA is difficult, as is its graphical representation and interpretation. Problems become more complicated when the behavior of system parameters (such as aircraft control surfaces) is also taken into account. The system under consideration here is a polynomial representation of the NASA GTM aircraft model. Bifurcation analysis was carried out on this nonlinear aircraft model for understanding its steady state behavior with respect to input parameters and evaluating the multiple solution branches to give an indication as to the steady-state ROA for varying input parameters. Time history-based ROA analysis was then carried out, to understand the transient state response and for determining a multidimensional ROA for a constant input parameter value. This helped in specifying the maximum value of disturbance an aircraft can be subjected to and still return to the stable trim point. Differences between the bifurcation analysis and the time history results highlight the difficulty in estimating a ROA for a multi-attractor multi-parameter multi-state nonlinear aircraft system. The benefits of combining the results obtained from bifurcation analysis with time history-based region of attraction analysis is discussed; this offers the prospect of a ROA within which, for a range of predefined input parameters, an aircraft subjected to any disturbance will return back to a specific stable trim point. The solution hence provides a measure of robustness for aircraft systems and aircraft control law designs.
{"title":"Assessing Nonlinear Robustness of Control Law Designs","authors":"Deepak Gaur, M. Lowenberg, M. Prasad","doi":"10.1109/SPIN.2019.8711686","DOIUrl":"https://doi.org/10.1109/SPIN.2019.8711686","url":null,"abstract":"This work is aimed at evaluating the extent to which numerical bifurcation analysis tools can contribute to the determination of Regions of Attraction (ROA) for stable solutions of a dynamical system. The focus is on different flight scenarios within a safe flight envelope for a mathematical model of an airliner, aimed at being able to contribute to the assessment of aircraft control law designs. The implications of the study can be applied to other similar dynamical systems. In a multi-dimensional nonlinear system, computation of an exact ROA is difficult, as is its graphical representation and interpretation. Problems become more complicated when the behavior of system parameters (such as aircraft control surfaces) is also taken into account. The system under consideration here is a polynomial representation of the NASA GTM aircraft model. Bifurcation analysis was carried out on this nonlinear aircraft model for understanding its steady state behavior with respect to input parameters and evaluating the multiple solution branches to give an indication as to the steady-state ROA for varying input parameters. Time history-based ROA analysis was then carried out, to understand the transient state response and for determining a multidimensional ROA for a constant input parameter value. This helped in specifying the maximum value of disturbance an aircraft can be subjected to and still return to the stable trim point. Differences between the bifurcation analysis and the time history results highlight the difficulty in estimating a ROA for a multi-attractor multi-parameter multi-state nonlinear aircraft system. The benefits of combining the results obtained from bifurcation analysis with time history-based region of attraction analysis is discussed; this offers the prospect of a ROA within which, for a range of predefined input parameters, an aircraft subjected to any disturbance will return back to a specific stable trim point. The solution hence provides a measure of robustness for aircraft systems and aircraft control law designs.","PeriodicalId":344030,"journal":{"name":"2019 6th International Conference on Signal Processing and Integrated Networks (SPIN)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114386921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-01DOI: 10.1109/SPIN.2019.8711605
Sumit Kumar, Yash Pal
This paper presents an asymmetric cascaded H-bridge multilevel inverter for photovoltaic system. The asymmetric multilevel inverter is perfect solution for photovoltaic system because it enhances power quality and enable transformerless operation. In an asymmetric cascaded H-bridge multilevel inverter, different levels of voltage is applied which enhance output voltage levels and reduces Total Harmonic Distortion (THD) as compared to symmetrical multilevel inverter. Two different carrier based modulation techniques are used for providing gate pulses to cascaded H-bridge multilevel inverter. A comparative analysis of two modulation techniques is also carried out in terms of THD. To validate the performance of an asymmetric cascaded H-bridge multilevel inverter for a photovoltaic system, the modeling is carried out using MATLAB/simulink. The result verifies the advantages and reliability of asymmetric cascaded H-bridge multilevel inverter for a PV system.
{"title":"A Three-Phase Asymmetric Multilevel Inverter for Standalone PV Systems","authors":"Sumit Kumar, Yash Pal","doi":"10.1109/SPIN.2019.8711605","DOIUrl":"https://doi.org/10.1109/SPIN.2019.8711605","url":null,"abstract":"This paper presents an asymmetric cascaded H-bridge multilevel inverter for photovoltaic system. The asymmetric multilevel inverter is perfect solution for photovoltaic system because it enhances power quality and enable transformerless operation. In an asymmetric cascaded H-bridge multilevel inverter, different levels of voltage is applied which enhance output voltage levels and reduces Total Harmonic Distortion (THD) as compared to symmetrical multilevel inverter. Two different carrier based modulation techniques are used for providing gate pulses to cascaded H-bridge multilevel inverter. A comparative analysis of two modulation techniques is also carried out in terms of THD. To validate the performance of an asymmetric cascaded H-bridge multilevel inverter for a photovoltaic system, the modeling is carried out using MATLAB/simulink. The result verifies the advantages and reliability of asymmetric cascaded H-bridge multilevel inverter for a PV system.","PeriodicalId":344030,"journal":{"name":"2019 6th International Conference on Signal Processing and Integrated Networks (SPIN)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114532832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-01DOI: 10.1109/SPIN.2019.8711639
P. Singh, Ratnakar Dash
Road extraction has been one of the important research topics in field of remote sensing imagery due to its significant role in various areas such as traffic management, urban planning, GPS navigation, disaster management etc. In this paper, we investigate and exploit a deep convolution network, U-net, for road extraction from aerial images. We propose a model which is a union of a high precision network and a high recall network. Both the networks are based on deep U-net. Massachusetts road dataset is used in the experiments. The results demonstrate that our proposed model outperforms state-of-the-art frameworks in terms of accuracy, precision, recall, and F-score.
{"title":"A Two-Step Deep Convolution Neural Network for Road Extraction from Aerial Images","authors":"P. Singh, Ratnakar Dash","doi":"10.1109/SPIN.2019.8711639","DOIUrl":"https://doi.org/10.1109/SPIN.2019.8711639","url":null,"abstract":"Road extraction has been one of the important research topics in field of remote sensing imagery due to its significant role in various areas such as traffic management, urban planning, GPS navigation, disaster management etc. In this paper, we investigate and exploit a deep convolution network, U-net, for road extraction from aerial images. We propose a model which is a union of a high precision network and a high recall network. Both the networks are based on deep U-net. Massachusetts road dataset is used in the experiments. The results demonstrate that our proposed model outperforms state-of-the-art frameworks in terms of accuracy, precision, recall, and F-score.","PeriodicalId":344030,"journal":{"name":"2019 6th International Conference on Signal Processing and Integrated Networks (SPIN)","volume":"178 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116477124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-01DOI: 10.1109/SPIN.2019.8711568
Deepak Gaur, M. Prasad
There has been significant research into the use of reflected GPS signals for remote sensing. The reflected GPS signals may contain information on soil moisture, ocean waves, and altitude [1]–[4]. Space radar systems have also been a topic of intense interest for several decades, as a means of providing global coverage for both military and geoscience applications [5]–[7]. These systems implement Synthetic Aperture Radar (SAR), Ground Moving Target Indicator (GMTI), and Space Time Adaptive Processing (STAP) algorithms to detect targets and form images. Orbit selection is important for these systems to provide optimum coverage and performance. By using reflected GPS signals to implement space-based bistatic radar, a more robust and cost-effective system could be fielded. However, the performance analysis of such a system would be complex, since the orbits of the receiving spacecraft and the GPS constellation will be significantly different, and their interactions dynamic. This relationship between the receiving satellite's orbit and the GPS constellation was the subject of the research. A prototype antenna array was used to estimate the resolution and signal levels of the system for various transmitter/receiver relationships. Based on an understanding of the desired signal characteristics for bistatic GPS, a family of orbits was simulated to determine the dependency on inclinations and altitudes.
{"title":"Space-Based Bistatic GPS Radar Orbit Analysis","authors":"Deepak Gaur, M. Prasad","doi":"10.1109/SPIN.2019.8711568","DOIUrl":"https://doi.org/10.1109/SPIN.2019.8711568","url":null,"abstract":"There has been significant research into the use of reflected GPS signals for remote sensing. The reflected GPS signals may contain information on soil moisture, ocean waves, and altitude [1]–[4]. Space radar systems have also been a topic of intense interest for several decades, as a means of providing global coverage for both military and geoscience applications [5]–[7]. These systems implement Synthetic Aperture Radar (SAR), Ground Moving Target Indicator (GMTI), and Space Time Adaptive Processing (STAP) algorithms to detect targets and form images. Orbit selection is important for these systems to provide optimum coverage and performance. By using reflected GPS signals to implement space-based bistatic radar, a more robust and cost-effective system could be fielded. However, the performance analysis of such a system would be complex, since the orbits of the receiving spacecraft and the GPS constellation will be significantly different, and their interactions dynamic. This relationship between the receiving satellite's orbit and the GPS constellation was the subject of the research. A prototype antenna array was used to estimate the resolution and signal levels of the system for various transmitter/receiver relationships. Based on an understanding of the desired signal characteristics for bistatic GPS, a family of orbits was simulated to determine the dependency on inclinations and altitudes.","PeriodicalId":344030,"journal":{"name":"2019 6th International Conference on Signal Processing and Integrated Networks (SPIN)","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124694685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Prior to blockchain technology coming into much usage, the earlier cryptographic digital cash schemes relied merely on trusted authorities. Bitcoin revolutionized this conventional view of a cryptocurrency, trading decentralized, distributed ledger, completely secured by the majority rule without predetermined authority or owner. Only standard cryptographic primitives such as signatures and hash functions were used to achieve security. Though other cryptocurrencies such as Bit-gold and B-money which are among the authority-free cryptocurrencies, Bitcoin is the first one to experience public acceptance on a large scale. There are various factors which contribute to Bitcoins success, though there is still a little question of doubt that the decentralized design of blockchain technology and perceived resilience to government or third-party intervention played an extremely crucial role in its uptake. Distributed crypto cash, more specifically in Blockchain technology has hailed as one key and most eminent and widely accepted innovation of Bitcoin. In this paper we have worked on the use of blockchain technology to implement cryptocurrency for IOT.
{"title":"Blockchain Based Cryptocurrency for IOT","authors":"Samyak Jain, Umang Rastogi, Nikita Bansal, Gagandeep Kaur","doi":"10.1109/SPIN.2019.8711727","DOIUrl":"https://doi.org/10.1109/SPIN.2019.8711727","url":null,"abstract":"Prior to blockchain technology coming into much usage, the earlier cryptographic digital cash schemes relied merely on trusted authorities. Bitcoin revolutionized this conventional view of a cryptocurrency, trading decentralized, distributed ledger, completely secured by the majority rule without predetermined authority or owner. Only standard cryptographic primitives such as signatures and hash functions were used to achieve security. Though other cryptocurrencies such as Bit-gold and B-money which are among the authority-free cryptocurrencies, Bitcoin is the first one to experience public acceptance on a large scale. There are various factors which contribute to Bitcoins success, though there is still a little question of doubt that the decentralized design of blockchain technology and perceived resilience to government or third-party intervention played an extremely crucial role in its uptake. Distributed crypto cash, more specifically in Blockchain technology has hailed as one key and most eminent and widely accepted innovation of Bitcoin. In this paper we have worked on the use of blockchain technology to implement cryptocurrency for IOT.","PeriodicalId":344030,"journal":{"name":"2019 6th International Conference on Signal Processing and Integrated Networks (SPIN)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127490904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-01DOI: 10.1109/SPIN.2019.8711680
Madhuri Sahal, V. Tiwari, D. Bhatnagar
A coaxial-fed elliptical microstrip antenna having circular polarization is presented for harvesting RF energy in the ISM band. A square-shaped slot is embedded in the elliptical microstrip antenna which causes current perturbation. The position and dimension of the square slot are optimized to generate the two orthogonal degenerate modes required for circular polarization. V-shaped slits that are placed diagonally along the boundary affect the resonant frequency. The proposed design has a simulated 10-dB impedance bandwidth equal to 100 MHz (2.43 GHz-2.53 GHz) whereas 3-dB AR bandwidth is 20 MHz (2.45-2.47 GHz). The simulated gain of proposed antenna is around 3.35 dB. The design generates a wide AR beam width of 160 degrees in E-plane and 200 degrees in H-plane. The overall antenna dimensions are $50 mathbf{mm}times 50mathbf{mm}times 1.6 mathbf{mm} (0.41 boldsymbol{lambda}_{0} times 0.41boldsymbol{lambda}_{0}times 0.013 boldsymbol{lambda}_{0})$. The antenna is suitable for use in ISM band for RF energy harvesting from nearby WiFi, Bluetooth devices.
{"title":"Circular Polarized Elliptical Microstrip Antenna with Wide Beamwidth for ISM Band RF Energy Harvesting","authors":"Madhuri Sahal, V. Tiwari, D. Bhatnagar","doi":"10.1109/SPIN.2019.8711680","DOIUrl":"https://doi.org/10.1109/SPIN.2019.8711680","url":null,"abstract":"A coaxial-fed elliptical microstrip antenna having circular polarization is presented for harvesting RF energy in the ISM band. A square-shaped slot is embedded in the elliptical microstrip antenna which causes current perturbation. The position and dimension of the square slot are optimized to generate the two orthogonal degenerate modes required for circular polarization. V-shaped slits that are placed diagonally along the boundary affect the resonant frequency. The proposed design has a simulated 10-dB impedance bandwidth equal to 100 MHz (2.43 GHz-2.53 GHz) whereas 3-dB AR bandwidth is 20 MHz (2.45-2.47 GHz). The simulated gain of proposed antenna is around 3.35 dB. The design generates a wide AR beam width of 160 degrees in E-plane and 200 degrees in H-plane. The overall antenna dimensions are $50 mathbf{mm}times 50mathbf{mm}times 1.6 mathbf{mm} (0.41 boldsymbol{lambda}_{0} times 0.41boldsymbol{lambda}_{0}times 0.013 boldsymbol{lambda}_{0})$. The antenna is suitable for use in ISM band for RF energy harvesting from nearby WiFi, Bluetooth devices.","PeriodicalId":344030,"journal":{"name":"2019 6th International Conference on Signal Processing and Integrated Networks (SPIN)","volume":"281 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127509549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-01DOI: 10.1109/SPIN.2019.8711678
N. Verma, Priyanka Dalal, Pratul Nijhawan
A compact novel configuration of Antipodal Vivaldi Antenna has been designed for 8–75 GHz which works for radar frequency bands i.e. X band, Ku band, K band, Ka band, Q band and V band. It is designed over flexible polycarbonate substrate having radiating copper metallic patch. The decreasing amplitude corrugations which are designed in exponential manner are stripped off at front and back side of the antenna. The antenna exhibits good front to back ratio and peak realized gain. The peak realized gain ranges from 5 dBi to 12.7 dBi for $250 boldsymbol{mu} mathbf{m}$ thickness and it ranges from 2.18 dBi to 11.73 dBi for $500 boldsymbol{mu} mathbf{m}$ thickness. The antenna exhibits good radiation characteristics over the designed frequency range in terms of peak realized gain, front to back ratio as well as 3D radiation plots with that being better for $250 boldsymbol{mu} mathbf{m}$ antenna as compared to $500 boldsymbol{mu} mathbf{m}$ antenna. The antenna with $250 boldsymbol{mu} mathbf{m}$ thickness gives unidirectional radiation pattern almost covering the entire designed frequency range. The optimization of parameters is done in such manner so that it will achieve overall good performance.
{"title":"Design of Compact Antipodal Vivaldi Antenna on $250 mu mathrm{m}$ and $500 mu mathrm{m}$ Polycarbonate Over Wide Frequency Range","authors":"N. Verma, Priyanka Dalal, Pratul Nijhawan","doi":"10.1109/SPIN.2019.8711678","DOIUrl":"https://doi.org/10.1109/SPIN.2019.8711678","url":null,"abstract":"A compact novel configuration of Antipodal Vivaldi Antenna has been designed for 8–75 GHz which works for radar frequency bands i.e. X band, Ku band, K band, Ka band, Q band and V band. It is designed over flexible polycarbonate substrate having radiating copper metallic patch. The decreasing amplitude corrugations which are designed in exponential manner are stripped off at front and back side of the antenna. The antenna exhibits good front to back ratio and peak realized gain. The peak realized gain ranges from 5 dBi to 12.7 dBi for $250 boldsymbol{mu} mathbf{m}$ thickness and it ranges from 2.18 dBi to 11.73 dBi for $500 boldsymbol{mu} mathbf{m}$ thickness. The antenna exhibits good radiation characteristics over the designed frequency range in terms of peak realized gain, front to back ratio as well as 3D radiation plots with that being better for $250 boldsymbol{mu} mathbf{m}$ antenna as compared to $500 boldsymbol{mu} mathbf{m}$ antenna. The antenna with $250 boldsymbol{mu} mathbf{m}$ thickness gives unidirectional radiation pattern almost covering the entire designed frequency range. The optimization of parameters is done in such manner so that it will achieve overall good performance.","PeriodicalId":344030,"journal":{"name":"2019 6th International Conference on Signal Processing and Integrated Networks (SPIN)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130054519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-01DOI: 10.1109/SPIN.2019.8711679
Deepak Gaur, M. Prasad
Precise positioning using the Global Positioning System (GPS) requires accurate knowledge of the satellite orbits. The International GNSS Service (IGS) distributes post-processed GPS satellite orbits that give the satellite positions at 15 minutes interval. For GPS applications involving high-rate (1 Hz) GPS, it is necessary to know the satellite positions at one second intervals. One approach of doing this is to interpolate the IGS precise orbit using a polynomial or trigonometric function. An alternative approach is to use the precise ephemeris distributed by the IGS to obtain the satellite position and velocity at the initial epoch and then perform numerical integration to determine the satellite position at one second intervals. JPL's GPS Inferred Positioning System/Orbit Analysis and Simulation Software (GIPSY/OASIS) is used to numerically integrate the orbit of a single GPS satellite in order to determine the position at one second intervals. A comparison of the numerically integrated positions and the interpolated positions shows that the numerically integrated satellite positions more closely match the IGS orbits than an orbit constructed using a trigonometric interpolation.
{"title":"One-Second GPS Orbits: A Comparison Between Numerical Integration and Interpolation","authors":"Deepak Gaur, M. Prasad","doi":"10.1109/SPIN.2019.8711679","DOIUrl":"https://doi.org/10.1109/SPIN.2019.8711679","url":null,"abstract":"Precise positioning using the Global Positioning System (GPS) requires accurate knowledge of the satellite orbits. The International GNSS Service (IGS) distributes post-processed GPS satellite orbits that give the satellite positions at 15 minutes interval. For GPS applications involving high-rate (1 Hz) GPS, it is necessary to know the satellite positions at one second intervals. One approach of doing this is to interpolate the IGS precise orbit using a polynomial or trigonometric function. An alternative approach is to use the precise ephemeris distributed by the IGS to obtain the satellite position and velocity at the initial epoch and then perform numerical integration to determine the satellite position at one second intervals. JPL's GPS Inferred Positioning System/Orbit Analysis and Simulation Software (GIPSY/OASIS) is used to numerically integrate the orbit of a single GPS satellite in order to determine the position at one second intervals. A comparison of the numerically integrated positions and the interpolated positions shows that the numerically integrated satellite positions more closely match the IGS orbits than an orbit constructed using a trigonometric interpolation.","PeriodicalId":344030,"journal":{"name":"2019 6th International Conference on Signal Processing and Integrated Networks (SPIN)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130613498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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