Pub Date : 2012-03-07DOI: 10.1109/ISPTS.2012.6260886
Chandrakant Patel, Adwaita Jadhav, Sudhir Lone, Vivek A. Rane, Varsha Chaware, V. Giramkar, G. Phatak
Low Temperature Co-fired Ceramic (LTCC) is amongst the favoured technologies for preparing miniature integrated packages and devices for various sensor and actuators applications. It is known that semiconductor gas sensors work at elevated temperatures. We have developed LTCC based micro hotplates with integrated temperature sensors for preparing miniature gas sensors. We have devised way to fabricate small size (Long side 6.5mm) suspended hot plate design of LTCC based hotplate with integrated thermistor. This paper presents results of heater and thermistor characterization for solid rectangular block and suspended hotplate designs of the hot plate. It is seen that the heaters as well as the thermistors present a linear behavior for both the designs. The rectangular solid block design dissipates about 3.5W power while the suspended hot plate design requires only about 144mW reaching steady state temperature of 250°C.
{"title":"Miniaturization of LTCC based hot plates for gas sensors application","authors":"Chandrakant Patel, Adwaita Jadhav, Sudhir Lone, Vivek A. Rane, Varsha Chaware, V. Giramkar, G. Phatak","doi":"10.1109/ISPTS.2012.6260886","DOIUrl":"https://doi.org/10.1109/ISPTS.2012.6260886","url":null,"abstract":"Low Temperature Co-fired Ceramic (LTCC) is amongst the favoured technologies for preparing miniature integrated packages and devices for various sensor and actuators applications. It is known that semiconductor gas sensors work at elevated temperatures. We have developed LTCC based micro hotplates with integrated temperature sensors for preparing miniature gas sensors. We have devised way to fabricate small size (Long side 6.5mm) suspended hot plate design of LTCC based hotplate with integrated thermistor. This paper presents results of heater and thermistor characterization for solid rectangular block and suspended hotplate designs of the hot plate. It is seen that the heaters as well as the thermistors present a linear behavior for both the designs. The rectangular solid block design dissipates about 3.5W power while the suspended hot plate design requires only about 144mW reaching steady state temperature of 250°C.","PeriodicalId":6431,"journal":{"name":"2012 1st International Symposium on Physics and Technology of Sensors (ISPTS-1)","volume":"65 1","pages":"83-86"},"PeriodicalIF":0.0,"publicationDate":"2012-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83736987","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 : 2012-03-07DOI: 10.1109/ISPTS.2012.6260922
C. Mariappan, E. Prabhu, K. I. Gnanasekar, V. Jayaraman, T. Gnanasekaran
In2O3 thin film was fabricated using pulsed laser deposition technique. The structure and morphology of the thin film were characterized by X-ray diffraction and atomic force microscopy respectively. AC impedance of In2O3 thin film gas sensor were investigated at different temperatures (275 – 425 °C) when exposed into clean air and air containing NOx. Significant NOx sensing characteristics of thin film were observed at 325 °C by ac impedance analysis. The resistance and capacitance of indium oxide film were increased in the presence of NOx. The mechanism for the increase of resistance and of capacitance is presented.
{"title":"Impedance spectroscopy analysis of In2O3 thin film gas sensor","authors":"C. Mariappan, E. Prabhu, K. I. Gnanasekar, V. Jayaraman, T. Gnanasekaran","doi":"10.1109/ISPTS.2012.6260922","DOIUrl":"https://doi.org/10.1109/ISPTS.2012.6260922","url":null,"abstract":"In<inf>2</inf>O<inf>3</inf> thin film was fabricated using pulsed laser deposition technique. The structure and morphology of the thin film were characterized by X-ray diffraction and atomic force microscopy respectively. AC impedance of In<inf>2</inf>O<inf>3</inf> thin film gas sensor were investigated at different temperatures (275 – 425 °C) when exposed into clean air and air containing NO<inf>x</inf>. Significant NO<inf>x</inf> sensing characteristics of thin film were observed at 325 °C by ac impedance analysis. The resistance and capacitance of indium oxide film were increased in the presence of NO<inf>x</inf>. The mechanism for the increase of resistance and of capacitance is presented.","PeriodicalId":6431,"journal":{"name":"2012 1st International Symposium on Physics and Technology of Sensors (ISPTS-1)","volume":"94 1","pages":"200-203"},"PeriodicalIF":0.0,"publicationDate":"2012-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88959898","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 : 2012-03-07DOI: 10.1109/ISPTS.2012.6260884
P. Devi, P. Reddy, Suman Singh, M. Singla, C. Ghanshyam, A.K. Paul Pawan Kapur, Vishal
In the present work, the effect of the surfactant concentration and particle size on the 2D assembly and corresponding isotherms of the silica nanoparticles at the air/water interface is studied and reported using Langmuir-Blodgett (LB) technique. Silica nanoparticles (NPs) of different sizes (30 nm & 150 nm) were synthesized by Stöber's method and were characterized to determine their sizes and dispersity using scanning electron microscopy. As-synthesized NPs were hydrophobized to varying extents through addition of varying amounts (0.5 mg to 1.5 mg) of cationic surfactant, cetyltrimethylammoniumbromide (CTAB). The lift off area (area/particle) and corresponding yield was found to be very low for 30 nm sized particles. The yield in case of 150 nm sized particles participating in monolayer formation is found to be much higher implying a more optimal interaction with surfactant in the studied concentration range. The low yield at small particle size can be attributed to the partial surface modification of particles.
{"title":"Isotherm behavior studies of silica nanoparticles: Role of surfactant concentration and particle size","authors":"P. Devi, P. Reddy, Suman Singh, M. Singla, C. Ghanshyam, A.K. Paul Pawan Kapur, Vishal","doi":"10.1109/ISPTS.2012.6260884","DOIUrl":"https://doi.org/10.1109/ISPTS.2012.6260884","url":null,"abstract":"In the present work, the effect of the surfactant concentration and particle size on the 2D assembly and corresponding isotherms of the silica nanoparticles at the air/water interface is studied and reported using Langmuir-Blodgett (LB) technique. Silica nanoparticles (NPs) of different sizes (30 nm & 150 nm) were synthesized by Stöber's method and were characterized to determine their sizes and dispersity using scanning electron microscopy. As-synthesized NPs were hydrophobized to varying extents through addition of varying amounts (0.5 mg to 1.5 mg) of cationic surfactant, cetyltrimethylammoniumbromide (CTAB). The lift off area (area/particle) and corresponding yield was found to be very low for 30 nm sized particles. The yield in case of 150 nm sized particles participating in monolayer formation is found to be much higher implying a more optimal interaction with surfactant in the studied concentration range. The low yield at small particle size can be attributed to the partial surface modification of particles.","PeriodicalId":6431,"journal":{"name":"2012 1st International Symposium on Physics and Technology of Sensors (ISPTS-1)","volume":"63 1","pages":"79-82"},"PeriodicalIF":0.0,"publicationDate":"2012-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90352541","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 : 2012-03-07DOI: 10.1109/ISPTS.2012.6260924
V. Rao
Organic field effect transistors and polymer microcantilevers are two classes of organic sensors with potential applications in biochemical sensing. The organic field effect transistors (OFETs) with region regular poly3-hexylthiophene(rr-P3HT) and hexafluoro-2-propanol-substituted polysiloxane (SXFA) as an organic layer, have been used for detection of explosive vapors with excellent sensitivity of less than 70 ppt for 1,3,5-trinitro-1,3,5-triazacyclohexane (RDX) and less than 100 ppt for 2,4,6-trinitrotoluene (TNT) [1–3]. Piezo-resistive & piezo-electric polymer composite microcantilevers have been demonstrated as sensitive and cost effective platforms for bio-chemical detection [4–12]. Integration of the OFET and the polymer cantilever platform can bring orthogonality to the sensing where selectivity is a critical requirement. We have recently achieved this by integrating a strain sensitive organic field effect transistor (OFET) on the surface of a polymer nanomechanical cantilever [6]. This sensor named as the “Organic CantiFET” shows the highest deflection and surface stress sensitivity reported till date and opens up opportunities for realizing highly sensitive yet selective low cost polymer sensors for a variety of applications.
{"title":"Organic nano-electro-mechanical-sensor systems for healthcare and environmental applications","authors":"V. Rao","doi":"10.1109/ISPTS.2012.6260924","DOIUrl":"https://doi.org/10.1109/ISPTS.2012.6260924","url":null,"abstract":"Organic field effect transistors and polymer microcantilevers are two classes of organic sensors with potential applications in biochemical sensing. The organic field effect transistors (OFETs) with region regular poly3-hexylthiophene(rr-P3HT) and hexafluoro-2-propanol-substituted polysiloxane (SXFA) as an organic layer, have been used for detection of explosive vapors with excellent sensitivity of less than 70 ppt for 1,3,5-trinitro-1,3,5-triazacyclohexane (RDX) and less than 100 ppt for 2,4,6-trinitrotoluene (TNT) [1–3]. Piezo-resistive & piezo-electric polymer composite microcantilevers have been demonstrated as sensitive and cost effective platforms for bio-chemical detection [4–12]. Integration of the OFET and the polymer cantilever platform can bring orthogonality to the sensing where selectivity is a critical requirement. We have recently achieved this by integrating a strain sensitive organic field effect transistor (OFET) on the surface of a polymer nanomechanical cantilever [6]. This sensor named as the “Organic CantiFET” shows the highest deflection and surface stress sensitivity reported till date and opens up opportunities for realizing highly sensitive yet selective low cost polymer sensors for a variety of applications.","PeriodicalId":6431,"journal":{"name":"2012 1st International Symposium on Physics and Technology of Sensors (ISPTS-1)","volume":"54 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2012-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79708645","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 : 2012-03-07DOI: 10.1109/ISPTS.2012.6260893
Shrikant G. Kulkarni, G. Phatak, P. Ramesh, S. Duttagupta
Gadolinium doped Ceria (GDC) is a known oxygen ion conductor in intermediate temperature range. This is a preliminary work aimed at exploring the suitability of using nanocrystalline GDC as oxygen sensor in intermediate operating temperature range (500°C–700°C). The nanocrystalline Gadolinium doped Ceria (GDC) has been prepared by sol-gel method with EDTA as chelating agent. Particle size around 10±5nm was obtained after calcination at 600°C. Pellets prepared using this material were sintered 1350°C, which show 90% of the theoretical density. The dc and ac (1Hz–1MHz) conductivity of these pellet was measured in the temperature range 200–600°C and 500–700°C respectively. Highest conductivity of the order of 4.61X10−5 S/cm was recorded at 700°C. Possible reasons for low conductivity are discussed.
{"title":"Nanocrystalline Gadolinium doped Ceria (Ce0.8Gd0.2O3-δ) for oxygen sensor and solid oxide fuel cell applications","authors":"Shrikant G. Kulkarni, G. Phatak, P. Ramesh, S. Duttagupta","doi":"10.1109/ISPTS.2012.6260893","DOIUrl":"https://doi.org/10.1109/ISPTS.2012.6260893","url":null,"abstract":"Gadolinium doped Ceria (GDC) is a known oxygen ion conductor in intermediate temperature range. This is a preliminary work aimed at exploring the suitability of using nanocrystalline GDC as oxygen sensor in intermediate operating temperature range (500°C–700°C). The nanocrystalline Gadolinium doped Ceria (GDC) has been prepared by sol-gel method with EDTA as chelating agent. Particle size around 10±5nm was obtained after calcination at 600°C. Pellets prepared using this material were sintered 1350°C, which show 90% of the theoretical density. The dc and ac (1Hz–1MHz) conductivity of these pellet was measured in the temperature range 200–600°C and 500–700°C respectively. Highest conductivity of the order of 4.61X10<sup>−5</sup> S/cm was recorded at 700°C. Possible reasons for low conductivity are discussed.","PeriodicalId":6431,"journal":{"name":"2012 1st International Symposium on Physics and Technology of Sensors (ISPTS-1)","volume":"73 1","pages":"110-113"},"PeriodicalIF":0.0,"publicationDate":"2012-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87276866","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 : 2012-03-07DOI: 10.1109/ISPTS.2012.6260910
A. E. Kalange, B. Mahale, S. Aghav, S. Gangal
Diagnosis according to Ayurveda is to find the root cause of a disease. Out of the eight different kinds of examinations Nadi-Pariksha (pulse examination) is important. Nadi-pariksha is done at the root of the thumb by examining the radial artery using three fingers. The features associated with the pulse pressure signals are important from diagnostic point of view. Ancient Ayurveda identifies the health status by observing the wrist pulses in terms of ‘Vata’, ‘Pitta’ and ‘Kapha’, collectively called as tridosha, as the basic elements of human body and in their combinations.
{"title":"Nadi Parikshan Yantra and analysis of radial pulse","authors":"A. E. Kalange, B. Mahale, S. Aghav, S. Gangal","doi":"10.1109/ISPTS.2012.6260910","DOIUrl":"https://doi.org/10.1109/ISPTS.2012.6260910","url":null,"abstract":"Diagnosis according to Ayurveda is to find the root cause of a disease. Out of the eight different kinds of examinations Nadi-Pariksha (pulse examination) is important. Nadi-pariksha is done at the root of the thumb by examining the radial artery using three fingers. The features associated with the pulse pressure signals are important from diagnostic point of view. Ancient Ayurveda identifies the health status by observing the wrist pulses in terms of ‘Vata’, ‘Pitta’ and ‘Kapha’, collectively called as tridosha, as the basic elements of human body and in their combinations.","PeriodicalId":6431,"journal":{"name":"2012 1st International Symposium on Physics and Technology of Sensors (ISPTS-1)","volume":"42 1","pages":"165-168"},"PeriodicalIF":0.0,"publicationDate":"2012-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78192765","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 : 2012-03-07DOI: 10.1109/ISPTS.2012.6260894
Abhijeet Kshirsagar, S. Duttagupta, S. Gangal
The recent development in smart systems can benefit from the integration of MEMS and CMOS technology with emphasis on low temperature processing that utilizes low cost substrates. The main constraints in MEMS/IC process are high thermal budget and harsh chemical usage in the processing. Polymers are generally used in surface micromachining as sacrificial layers, but face a problem of high temperature (150–250°C) baking cycles and the cost associated with it. This paper reports an in-house preparation (optimized formulation) and optimization of PMMA solution with a view to solve the problem with high temperature processing. Surface micromachined silicon nitride cantilevers using PMMA as sacrificial layer is fabricated to prove its feasibility for low temperature MEMS applications.
{"title":"Optimization of poly (methyl methacrylate) as sacrificial layer for application in low temperature MEMS","authors":"Abhijeet Kshirsagar, S. Duttagupta, S. Gangal","doi":"10.1109/ISPTS.2012.6260894","DOIUrl":"https://doi.org/10.1109/ISPTS.2012.6260894","url":null,"abstract":"The recent development in smart systems can benefit from the integration of MEMS and CMOS technology with emphasis on low temperature processing that utilizes low cost substrates. The main constraints in MEMS/IC process are high thermal budget and harsh chemical usage in the processing. Polymers are generally used in surface micromachining as sacrificial layers, but face a problem of high temperature (150–250°C) baking cycles and the cost associated with it. This paper reports an in-house preparation (optimized formulation) and optimization of PMMA solution with a view to solve the problem with high temperature processing. Surface micromachined silicon nitride cantilevers using PMMA as sacrificial layer is fabricated to prove its feasibility for low temperature MEMS applications.","PeriodicalId":6431,"journal":{"name":"2012 1st International Symposium on Physics and Technology of Sensors (ISPTS-1)","volume":"10 1","pages":"114-117"},"PeriodicalIF":0.0,"publicationDate":"2012-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78345376","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 : 2012-03-07DOI: 10.1109/ISPTS.2012.6260960
A. Singh
This paper presents synthesis, characterization and gas sensing properties of two dimensional nanostructures i.e. carbon nanoflakes (CNFs) grown by electro-phoretic deposition(EPD) on steel substrate using nitric acid refluxed electric arc synthesized carbon nanotubes(CNTs). Formation of CNFs has been confirmed by XRD and Raman spectra. Optical band gap measurement has been performed by UV-Vis spectroscopy. The morphology of CNFs has been studied via SEM. The EPD film has been characterized for gas sensing. The sensor responded to relatively low concentrations of liquefied petroleum gas (LPG) thus suggesting high-quality CNFs are useful for gas sensors. Sensor has shown maximum response at 200 °C.
{"title":"Growth of carbon nanoflakes from nitric acid oxidized electric arc-discharged CNTs and its gas sensing properties","authors":"A. Singh","doi":"10.1109/ISPTS.2012.6260960","DOIUrl":"https://doi.org/10.1109/ISPTS.2012.6260960","url":null,"abstract":"This paper presents synthesis, characterization and gas sensing properties of two dimensional nanostructures i.e. carbon nanoflakes (CNFs) grown by electro-phoretic deposition(EPD) on steel substrate using nitric acid refluxed electric arc synthesized carbon nanotubes(CNTs). Formation of CNFs has been confirmed by XRD and Raman spectra. Optical band gap measurement has been performed by UV-Vis spectroscopy. The morphology of CNFs has been studied via SEM. The EPD film has been characterized for gas sensing. The sensor responded to relatively low concentrations of liquefied petroleum gas (LPG) thus suggesting high-quality CNFs are useful for gas sensors. Sensor has shown maximum response at 200 °C.","PeriodicalId":6431,"journal":{"name":"2012 1st International Symposium on Physics and Technology of Sensors (ISPTS-1)","volume":"214 1","pages":"330-333"},"PeriodicalIF":0.0,"publicationDate":"2012-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76079807","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 : 2012-03-07DOI: 10.1109/ISPTS.2012.6260865
Varun Ojha, P. Dutta, H. Saha, Sugato Ghosh
The present article proposes the issues in designing an intelligent recognizer for detecting proportion of component gases in manhole gas mixture. The major components found in manhole gas mixture are Hydrogen Sulfide (H2S), Ammonia (NH3), Methane (CH4), Carbon Dioxide (CO2), Nitrogen Oxide (NOx), and Carbon Monoxide (CO). The manhole gas is formed after the decomposition of waste products, domestic garbage etc. into the sewer pipelines which are built for exhausting these waste products out of our cities and towns. The manholes are built across these pipelines for cleaning purpose. Thus safety for the people working in this field is a matter of concern because all the above mentioned gases are harmful gases and they are potent to loss of human lives. Also detection of these gas components is of primary concern today as because a short exposure of these components with human physiology results endanger to their lives. So our focus is on developing an intelligent gas recognition system which can recognize multiple gases simultaneously. A gas sensor array is an array of sensors, consisting of two or more electrical type semiconductor gas sensors. Response of electrical type semiconductor gas sensors in presence of gases are either the change in resistance or change in voltage of the sensor. At an instant a gas sensor array contains as many sensors as many individual gases we are targeting to detect. Use of multiple gas sensors and presence of multiple gases together results cross-sensitivity. The cross-sensitivity is an overlapping effect of one gas on another sensor. We adopt linear regression based statistical approach to deal with issues of simultaneous detection of multiple gases notwithstanding cross-sensitivity issue.
{"title":"Linear regression based statistical approach for detecting proportion of component gases in manhole gas mixture","authors":"Varun Ojha, P. Dutta, H. Saha, Sugato Ghosh","doi":"10.1109/ISPTS.2012.6260865","DOIUrl":"https://doi.org/10.1109/ISPTS.2012.6260865","url":null,"abstract":"The present article proposes the issues in designing an intelligent recognizer for detecting proportion of component gases in manhole gas mixture. The major components found in manhole gas mixture are Hydrogen Sulfide (H2S), Ammonia (NH3), Methane (CH4), Carbon Dioxide (CO2), Nitrogen Oxide (NOx), and Carbon Monoxide (CO). The manhole gas is formed after the decomposition of waste products, domestic garbage etc. into the sewer pipelines which are built for exhausting these waste products out of our cities and towns. The manholes are built across these pipelines for cleaning purpose. Thus safety for the people working in this field is a matter of concern because all the above mentioned gases are harmful gases and they are potent to loss of human lives. Also detection of these gas components is of primary concern today as because a short exposure of these components with human physiology results endanger to their lives. So our focus is on developing an intelligent gas recognition system which can recognize multiple gases simultaneously. A gas sensor array is an array of sensors, consisting of two or more electrical type semiconductor gas sensors. Response of electrical type semiconductor gas sensors in presence of gases are either the change in resistance or change in voltage of the sensor. At an instant a gas sensor array contains as many sensors as many individual gases we are targeting to detect. Use of multiple gas sensors and presence of multiple gases together results cross-sensitivity. The cross-sensitivity is an overlapping effect of one gas on another sensor. We adopt linear regression based statistical approach to deal with issues of simultaneous detection of multiple gases notwithstanding cross-sensitivity issue.","PeriodicalId":6431,"journal":{"name":"2012 1st International Symposium on Physics and Technology of Sensors (ISPTS-1)","volume":"152 1","pages":"17-20"},"PeriodicalIF":0.0,"publicationDate":"2012-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74272045","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 : 2012-03-07DOI: 10.1109/ISPTS.2012.6260882
S. Aghav, S. Gangal
In this paper, a simple but fairly accurate algorithm, to determine orbit of the Low Earth Orbit (LEO) satellite, in its real time and with low computational burden is reported. This is done by using raw navigation solution provided by GPS Navigation sensor. A fixed step-size Runge-Kutta 4th order numerical integration method is selected for orbit propagation. Both, the Least square and Extended Kalman Filter (EKF) orbit estimation algorithms are developed and the results of the same are compared with each other. The least square algorithm converges after seven iterations. In the case of EKF, the algorithm converges after three iterations. Hence, EKF algorithm satisfies the criterions of low computation burden which is required for autonomous orbit determination.
{"title":"Use of spaceborne GPS Navigation sensor for autonomous LEO orbit determination","authors":"S. Aghav, S. Gangal","doi":"10.1109/ISPTS.2012.6260882","DOIUrl":"https://doi.org/10.1109/ISPTS.2012.6260882","url":null,"abstract":"In this paper, a simple but fairly accurate algorithm, to determine orbit of the Low Earth Orbit (LEO) satellite, in its real time and with low computational burden is reported. This is done by using raw navigation solution provided by GPS Navigation sensor. A fixed step-size Runge-Kutta 4th order numerical integration method is selected for orbit propagation. Both, the Least square and Extended Kalman Filter (EKF) orbit estimation algorithms are developed and the results of the same are compared with each other. The least square algorithm converges after seven iterations. In the case of EKF, the algorithm converges after three iterations. Hence, EKF algorithm satisfies the criterions of low computation burden which is required for autonomous orbit determination.","PeriodicalId":6431,"journal":{"name":"2012 1st International Symposium on Physics and Technology of Sensors (ISPTS-1)","volume":"110 1","pages":"70-73"},"PeriodicalIF":0.0,"publicationDate":"2012-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74372065","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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