Pub Date : 2019-02-19DOI: 10.47974/tjcdta.011.2019.v01i01
Akhilesh Kumar, Megha Maheshwari, S. Nirmala
NavIC (Navigation with Indian Constellation) satellites transmit two signal frequencies L5 and S. L1C frequency has been introduced as a third frequency in NavIC for the civilian users like other navigation systems (e.g. GNSS (Global Navigation Satellite System), BeiDou Navigation satellite system) because of compatibility and interoperability for marketing. Also, the triple frequency improves the estimation of ionosphere delay and cycle slip detection. Therefore, a methodology needs to evolve to determine the ionosphere delay-free combinations using an exact and least square method for the triple frequency of NavIC Satellites. These methods have been derived based on the ionosphere amplification factor and noise reduction factor for both code and phase measurements. Also, a wide lane criterion is determined to detect the cycle slip for triple frequency. Results and analysis are demonstrated using the methods described for the exact solution and least square method. Also, further analysis is done to find the optimum solutions. Subject Classification: 65F20, 68U35, 78A99.
{"title":"Feasibility study of third frequency and improvements for NavIC satellites","authors":"Akhilesh Kumar, Megha Maheshwari, S. Nirmala","doi":"10.47974/tjcdta.011.2019.v01i01","DOIUrl":"https://doi.org/10.47974/tjcdta.011.2019.v01i01","url":null,"abstract":"NavIC (Navigation with Indian Constellation) satellites transmit two signal frequencies L5 and S. L1C frequency has been introduced as a third frequency in NavIC for the civilian users like other navigation systems (e.g. GNSS (Global Navigation Satellite System), BeiDou Navigation satellite system) because of compatibility and interoperability for marketing. Also, the triple frequency improves the estimation of ionosphere delay and cycle slip detection. Therefore, a methodology needs to evolve to determine the ionosphere delay-free combinations using an exact and least square method for the triple frequency of NavIC Satellites. These methods have been derived based on the ionosphere amplification factor and noise reduction factor for both code and phase measurements. Also, a wide lane criterion is determined to detect the cycle slip for triple frequency. Results and analysis are demonstrated using the methods described for the exact solution and least square method. Also, further analysis is done to find the optimum solutions. Subject Classification: 65F20, 68U35, 78A99.","PeriodicalId":355328,"journal":{"name":"TARU Journal of Computer Dynamics & Technological Advances","volume":"27 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113995810","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 : 2019-02-19DOI: 10.47974/tjcdta.006.2019.v01i01
Bidyut B. Gogoi, Akhilesh Kumar, S. Nirmala, A. Kartik
The work in the current manuscript encompasses the use of a higher order finite differencing method in the determination of velocity and acceleration of navigational satellites. The Earth Centred Earth Fixed (ECEF) positions of the satellites are first obtained from the broadcast ephemeris which is followed by the application of a fourth-order differencing technique to calculate the satellites ECEF velocity from these ECEF positions. In a similar manner, the satellites ECEF acceleration are then derived from the ECEF velocities. The methodology have been implemented on navigation systems like BeiDou and NavIC (IRNSS). As the described technique is much simple and pretty candid than the traditional approaches, it may be a great alternative to the traditional methodologies. The presented results exemplify that the ECEF velocities of the satellites can be derived with accuracies of 0.5 mm/s and the ECEF accelerations of the satellites can be derived with a substantial accuracy of 0.05 mm/s. Subject Classification: 00A72, 65Y99, 68N01, 68U20.
{"title":"Application of higher order finite differencing techniques in velocity and acceleration determination of satellite navigation systems","authors":"Bidyut B. Gogoi, Akhilesh Kumar, S. Nirmala, A. Kartik","doi":"10.47974/tjcdta.006.2019.v01i01","DOIUrl":"https://doi.org/10.47974/tjcdta.006.2019.v01i01","url":null,"abstract":"The work in the current manuscript encompasses the use of a higher order finite differencing method in the determination of velocity and acceleration of navigational satellites. The Earth Centred Earth Fixed (ECEF) positions of the satellites are first obtained from the broadcast ephemeris which is followed by the application of a fourth-order differencing technique to calculate the satellites ECEF velocity from these ECEF positions. In a similar manner, the satellites ECEF acceleration are then derived from the ECEF velocities. The methodology have been implemented on navigation systems like BeiDou and NavIC (IRNSS). As the described technique is much simple and pretty candid than the traditional approaches, it may be a great alternative to the traditional methodologies. The presented results exemplify that the ECEF velocities of the satellites can be derived with accuracies of 0.5 mm/s and the ECEF accelerations of the satellites can be derived with a substantial accuracy of 0.05 mm/s. Subject Classification: 00A72, 65Y99, 68N01, 68U20.","PeriodicalId":355328,"journal":{"name":"TARU Journal of Computer Dynamics & Technological Advances","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124677418","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 : 2019-02-19DOI: 10.47974/tjcdta.002.2019.v01i01
Cheng Ho-Chih, Chiu Min-Chie, Chiu Che-Min
This creation is an automatic electrical creating and energy depositing system deduced by a gas emitting device occurred in the petroleum chemical industry. Most of the kinetic energy and potential energy inside the gas emitting device is lost during the emitting process. This invention intends to convert the kinetic energy and potential energy of the emitting fluid into electricity thru an electrical creating unit and a flow regulatory unit. Here, the volume flow rate is detected online by a volume flow sensor located inside the channel. The microcontroller will direct the step motor to decrease the opening by rotating the damper when the vented volume is large enough. Moreover, the electrical charging process of the storage battery will be monitored online. An information communication within the micro controller and the near port without wire is established by using a blue-tooth protocol. Image-monitoring via the PC, Tablet PC, and cell phone is also established using an ipcam. Subject Classification: (2010) 93A99.
{"title":"An electrical generating system from a gas venting device","authors":"Cheng Ho-Chih, Chiu Min-Chie, Chiu Che-Min","doi":"10.47974/tjcdta.002.2019.v01i01","DOIUrl":"https://doi.org/10.47974/tjcdta.002.2019.v01i01","url":null,"abstract":"This creation is an automatic electrical creating and energy depositing system deduced by a gas emitting device occurred in the petroleum chemical industry. Most of the kinetic energy and potential energy inside the gas emitting device is lost during the emitting process. This invention intends to convert the kinetic energy and potential energy of the emitting fluid into electricity thru an electrical creating unit and a flow regulatory unit. Here, the volume flow rate is detected online by a volume flow sensor located inside the channel. The microcontroller will direct the step motor to decrease the opening by rotating the damper when the vented volume is large enough. Moreover, the electrical charging process of the storage battery will be monitored online. An information communication within the micro controller and the near port without wire is established by using a blue-tooth protocol. Image-monitoring via the PC, Tablet PC, and cell phone is also established using an ipcam. Subject Classification: (2010) 93A99.","PeriodicalId":355328,"journal":{"name":"TARU Journal of Computer Dynamics & Technological Advances","volume":"172 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116413536","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 : 1900-01-01DOI: 10.47974/tjcdta.007.2019.v01i01
P. ., R. Chauhan
We are becoming more digitalized in these days because of advancements in technology and we know that every advancements come with certain risks. We use internet in our daily life for online payment, transfer of our credentials, and many more, but we are not aware of the risks until we face them. Cryptography plays a vital role in protecting our secret information over the internet. In this paper, we have designed a hybrid algorithm that uses three cryptography algorithms, i.e, AES, DES and modified RSA. We compared our work with others’ work in terms of number of packets sent to base station and sum of energy of remaining nodes. Subject Classification: 68P25, 94A60.
{"title":"TPHC : Implementation of 3 phase hybrid cryptographic technique for energy conservation in WSN","authors":"P. ., R. Chauhan","doi":"10.47974/tjcdta.007.2019.v01i01","DOIUrl":"https://doi.org/10.47974/tjcdta.007.2019.v01i01","url":null,"abstract":"We are becoming more digitalized in these days because of advancements in technology and we know that every advancements come with certain risks. We use internet in our daily life for online payment, transfer of our credentials, and many more, but we are not aware of the risks until we face them. Cryptography plays a vital role in protecting our secret information over the internet. In this paper, we have designed a hybrid algorithm that uses three cryptography algorithms, i.e, AES, DES and modified RSA. We compared our work with others’ work in terms of number of packets sent to base station and sum of energy of remaining nodes. Subject Classification: 68P25, 94A60.","PeriodicalId":355328,"journal":{"name":"TARU Journal of Computer Dynamics & Technological Advances","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130067603","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 : 1900-01-01DOI: 10.47974/tjcdta.003.2019.v01i01
Ho-Chih Cheng, M. Chiu, C. Chiu
To overcome the drawbacks of dust contamination, uncontrollable exposure time, and rain spoilage when using open sun drying in food preservation, a remote monitoring/ controlling lighting system using multiple climate sensors is presented. The system can remotely monitor/control a lighting system using multiple climate sensors. It is convenient for a food-processing factory such as in the drying of the plum preserves and mullet roe and in the wind drying of the rice noodles. The user can preset the time for lighting via the server port/ client port. Four climate sensors (thermal detector, wind speed detector, luxmeter, and rain detector) are adopted to detect environmental conditions. According to environmental conditions (temperature, wind speed, lighting, and rain), the system will send out/retrieve clothing and food. An IPCAM is used for image-monitoring via the server port and client port. Consequently, the device saves manpower, is user friendly, and is convenient. Subject Classification: (2010) 93A99.
{"title":"A lighting system using multiple climate sensors in conjunction with remote monitoring network","authors":"Ho-Chih Cheng, M. Chiu, C. Chiu","doi":"10.47974/tjcdta.003.2019.v01i01","DOIUrl":"https://doi.org/10.47974/tjcdta.003.2019.v01i01","url":null,"abstract":"To overcome the drawbacks of dust contamination, uncontrollable exposure time, and rain spoilage when using open sun drying in food preservation, a remote monitoring/ controlling lighting system using multiple climate sensors is presented. The system can remotely monitor/control a lighting system using multiple climate sensors. It is convenient for a food-processing factory such as in the drying of the plum preserves and mullet roe and in the wind drying of the rice noodles. The user can preset the time for lighting via the server port/ client port. Four climate sensors (thermal detector, wind speed detector, luxmeter, and rain detector) are adopted to detect environmental conditions. According to environmental conditions (temperature, wind speed, lighting, and rain), the system will send out/retrieve clothing and food. An IPCAM is used for image-monitoring via the server port and client port. Consequently, the device saves manpower, is user friendly, and is convenient. Subject Classification: (2010) 93A99.","PeriodicalId":355328,"journal":{"name":"TARU Journal of Computer Dynamics & Technological Advances","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114465640","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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