Initial data from the Formosa Satellite‐7/Constellation Observing System for Meteorology Ionosphe... more Initial data from the Formosa Satellite‐7/Constellation Observing System for Meteorology Ionosphere and Climate (FORMOSAT‐7/COSMIC‐2, hereafter C2), a recently launched equatorial constellation of six satellites carrying advanced radio occultation receivers, exhibit high signal‐to‐noise ratio, precision, and accuracy, and the ability to provide high vertical resolution profiles of bending angles and refractivity, which contain information on temperature and water vapor in the challenging tropical atmosphere. After an initial calibration/validation phase, over 100,000 soundings of bending angles and refractivity that passed quality control in October 2019 are compared with independent data, including radiosondes, model forecasts, and analyses. The comparisons show that C2 data meet expectations of high accuracy, precision, and capability to detect superrefraction. When fully operational, the C2 satellites are expected to produce ~5,000 soundings per day, providing freely available observations that will enable improved forecasts of weather, including tropical cyclones, and weather, space weather, and climate research.
Abstract The FORMOSAT-3/COSMIC mission consisting of six satellites is the world's first dem... more Abstract The FORMOSAT-3/COSMIC mission consisting of six satellites is the world's first demonstration of near real-time operational GPS Radio Occultation (RO) constellation mission. The success of the mission expected to operate through 2011 has initiated a new ...
Changes in levels of BST hormones, insulin, T 3 , 3' T and TSH in blood serum of dairy cows on 6t... more Changes in levels of BST hormones, insulin, T 3 , 3' T and TSH in blood serum of dairy cows on 6th, 7th and 8th day after BST application were studied. The animals were fed 12, 14 and 16 % levels of crude protein in dry matter in feed rations at the same time.
Page 1. 1 Operations Challenges from the FORMOSAT-3/COSMIC Constellation for Global Earth Weather... more Page 1. 1 Operations Challenges from the FORMOSAT-3/COSMIC Constellation for Global Earth Weather Monitoring Chen-Joe Fong§*, Nick Yen§, Vicky Chu§, Shao-Shing Chen§, and Sien Chi §F8, No. 9, Prosperity First ...
2007 3rd International Conference on Recent Advances in Space Technologies, 2007
Skip to Main Content. IEEE.org | IEEE Xplore Digital Library | IEEE Standards Association | Spect... more Skip to Main Content. IEEE.org | IEEE Xplore Digital Library | IEEE Standards Association | Spectrum Online | More IEEE Sites. IEEE Xplore Digital Library. Search Term(s). Advanced Search | Preferences | Search Tips. ...
... Chen-Joe Fong§*, Nick Yen§, Vicky Chu§, Eddy Yang§, Cheng-Yung Huang§, Shao-Shing Chen§, Yuei... more ... Chen-Joe Fong§*, Nick Yen§, Vicky Chu§, Eddy Yang§, Cheng-Yung Huang§, Shao-Shing Chen§, Yuei-An Liou4, and Sien ... The relative orbital separation angle, the relative Augment of Latitude (AOL), Right Ascension Ascending Node (RAAN), and the relative altitudes ...
摘要: The FORMOSAT-3/COSMIC (Constellation Observing System for Meteorology, Ionosphere, and Climat... more 摘要: The FORMOSAT-3/COSMIC (Constellation Observing System for Meteorology, Ionosphere, and Climate) mission consisting of six low-Earth-orbit satellites is the world's first demonstration of Global Positioning System radio occultation in a near real-time ...
IEEE Transactions on Geoscience and Remote Sensing, 2007
The Formosa Satellite-3 and Constellation Observing System for the Meteorology, Ionosphere, and C... more The Formosa Satellite-3 and Constellation Observing System for the Meteorology, Ionosphere, and Climate (FORMOSAT-3/COSMIC) radio occultation (RO) mission has been successfully launched on April 14, 2006. The FORMOSAT-3/ COSMIC mission uses global positioning system (GPS) signals to study the atmosphere and the ionosphere with global coverage. Receivers that are installed onboard of the six small FORMOSAT-3/COSMIC satellites register the phase and the amplitude of radio waves at two GPS frequencies. We give a preliminary analysis of the first RO measurements that are provided by the FORMOSAT-3/COSMIC mission. The geographical distribution of the first FORMOSAT-3/COSMIC RO experiments is shown. We demonstrate that the performance of the first measurements allows obtaining the vertical profiles of the refractivity, temperature, and pressure for the considered FORMOSAT-3/COSMIC RO events with expected accuracy, which is quite similar to the accuracy of the previous Challenging Mini-Satellite Payload and Gravity Recovery and Climate Experiment RO missions. New elements in the RO technology are suggested for further improving the accuracy and broadening the application range of the RO method. We emphasize new directions in applying the RO method to measure the vertical gradients of the refractivity in the atmosphere, to determine the temperature regime in the upper stratosphere, and to investigate the internal wave activity in the atmosphere. We find a significant correlation between the phase acceleration and the intensity variations in the RO signals that are emitted by GPS satellites and registered by the FORMOSAT-3/ COSMIC satellites. This correlation opens a way to locate the layered structures in the propagation medium based on simultaneous observations of the radio wave intensity and the phase variations in trans-ionospheric satellite-to-satellite links.
This paper describes the current planning and design of the YamSat, the first picosatellite being... more This paper describes the current planning and design of the YamSat, the first picosatellite being developed in Taiwan. The design, analysis, manufacture, integration, test and operation of the YamSat will be performed by the National Space Program Office (NSPO), Taiwan, R.O.C, in cooperation with other domestic organizations and companies. It is a member of the CubeSat [1], 10cm x 10cm x 10cm size and within 1kg mass. The major objective of the YamSat is to qualify in space the components and technology developed in Taiwan, including a micro-spectrometer payload using Micro Electro Mechanical Systems (MEMS) technology. The YamSat will be ready for flight in the middle of 2002.
The YamSat is the first developed picosatellite in National Space Program Office's (NSPO), Taiwan... more The YamSat is the first developed picosatellite in National Space Program Office's (NSPO), Taiwan, R.O.C. It is scheduled to flight in the CubeSat launch in 2003. The rapid-prototyping system engineering different from the past formal discipline opens a new satellite development model in NSPO. The YamSat Test Readiness Review Meeting was successfully held in January 2002 and the environmental tests were completed by end March 2002. Besides the breadboard model and engineering test bed to prove of operation concept are built, three YamSats (1A, 1B, & 1C) instead of one are manufactured with slightly different configurations and purposes. The YamSat-1A is for flight with ambitious and novel R.O.C. made components, including 15 domestic organizations and companies' participation. The YamSat-1B is basically for backup purpose and demonstration, whereas the YamSat-1C is for amateur communication experiment end-to-end field test, and for public education purpose. This new experience gives fruitful lessons learned and provides low cost space experimentation and education to the next built picosatellites in Taiwan's universities. Detailed mission and lessons learned are addressed in this paper. TABLE OF CONTENTS 1. Introduction 2. YamSat Program Overview 3. YamSat Design and Analysis 4. Integration and Test 5. ROC Made Component 6. Lessons Learned 7. Conclusions 8. Acknowledgements 9. References brought to you by CORE View metadata, citation and similar papers at core.ac.uk provided by DigitalCommons@USU SSC02-X-6 Chen-Joe Fong 2 16 th Annual AIAA/USU Conference on Small Satellites YamSat development schedule. Y-AM mission The objectives of the YamSat program are "Y-A-M" and addressed hereafter. The first letter "Y" represents a vital and native yam, which is like the shape of the Taiwan Island. In this program we try to use as many as possible of ROC made components, for example, the solar cell, micro-controller, magnetic coil, antenna deployed mechanism, structure, … etc. The letter "Y" also means a team of NSPO young engineers to develop a low-cost, short scheduling, quick turnaround program capability and model. This includes conceptual feasibility study, program planning, program execution, components procurement, system design and development, manufacture, assembly, integration, testing, ground station build-up and mission operation. The second letter "A" represents the amateur radio VHF communication payload used in the program. The Taiwan Amateur Satellite Association (TAMSAT) provides their technology support on both of the TT&C subsystem and the amateur communication experiment. YamSat also uses the newly-built amateur communication ground station. The amateur communication experiment will be presented to the worldwide amateur radio users. The third letter "M" represents the micro-spectrometer payload in which the diffraction device is based on the MEMS technology. The micro-spectrometer is used to measure the sunlight scattering spectrum from the atmosphere and is developed by the Precision Instrument Development Center Remote Sensing Lab (PIDC), Taiwan, R.O.C.
Terrestrial, Atmospheric and Oceanic Sciences, 2009
The FORMOSAT-3/COS MIC space craft con stel la tion con sist ing of six LEO sat el lites is the w... more The FORMOSAT-3/COS MIC space craft con stel la tion con sist ing of six LEO sat el lites is the world's first op er a tional GPS Ra dio Occultation (RO) mis sion. The mis sion is jointly de vel oped by Tai wan's Na tional Space Or ga ni za tion (NSPO) and the United States' UCAR in col lab o ra tion with NSF, USAF, NOAA, NASA, NASA's Jet Pro pul sion Lab o ra tory, and the US Na val Re search Lab o ra tory. The FORMOSAT-3/COS MIC sat el lites were suc cess fully launched from Vandenberg US AFB in Cal i for nia at 0140 UTC 15 April 2006 into the same or bit plane of the des ig nated 516 km al ti tude. The mis sion goal is to de ploy the six sat el lites into six or bit planes at 800 km al ti tude with a 30-de gree sep a ra tion for evenly dis trib uted global cov er age. All six FORMOSAT-3/COS MIC sat el lites are cur rently main tain ing a sat is fac tory good state-of-health. Five out of six sat el lites have reached their fi nal mis sion or bit of 800 km as of No vem ber 2007. The data as re ceived by FORMOSAT-3/COS MIC sat el lites con stel la tion have been pro cessed in near real time into 2500 good ion o spheric pro files and 1800 good at mo spheric pro files per day. These have out num bered the world wide ra dio sondes (~900 mostly over land) launched from the ground per day. The pro cessed at mo spheric RO data have been as sim i lated into the Nu mer i cal Weather Pre dic tion (NWP) mod els for real-time weather pre dic tion and ty phoon/hur ri cane fore cast ing by many ma jor weather cen ters in the world. This pa per de scribes the FORMOSAT-3/COS MIC sat el lite con stel la tion sys tem per for mance and the mission results that span the period from April 2006 to October 2007; and reviews the prospect of a future follow-on mission.
COSMIC/FORMOSAT-3 is a joint U.S.-Taiwan 6-microsatellite demonstration mission that was launched... more COSMIC/FORMOSAT-3 is a joint U.S.-Taiwan 6-microsatellite demonstration mission that was launched in April 2006. It is the world's first operational GPS radio occultation (RO) mission for global Earth weather forecasting; climate monitoring; and atmospheric, ionospheric, and geodetic research. The GPS-RO data has been demonstrated to be valuable to the climate, meteorology, and space weather communities. COSMIC has proven to increase the accuracy of the predictions of hurricane/typhoon behavior, significantly improve long-range weather forecasts, and monitor climate change with unprecedented accuracy. COSMIC will reach the end of its design life in 2011, and the critical capability it provides has already begun to degrade as satellites reach their end of life. As a result, NOAA and NSPO intend to jointly develop and launch COSMIC-2, a high-reliability next generation follow-on system. COSMIC-2 will provide the next generation of global navigation satellite system (GNSS)-RO data to users who critically depend on it.
Initial data from the Formosa Satellite‐7/Constellation Observing System for Meteorology Ionosphe... more Initial data from the Formosa Satellite‐7/Constellation Observing System for Meteorology Ionosphere and Climate (FORMOSAT‐7/COSMIC‐2, hereafter C2), a recently launched equatorial constellation of six satellites carrying advanced radio occultation receivers, exhibit high signal‐to‐noise ratio, precision, and accuracy, and the ability to provide high vertical resolution profiles of bending angles and refractivity, which contain information on temperature and water vapor in the challenging tropical atmosphere. After an initial calibration/validation phase, over 100,000 soundings of bending angles and refractivity that passed quality control in October 2019 are compared with independent data, including radiosondes, model forecasts, and analyses. The comparisons show that C2 data meet expectations of high accuracy, precision, and capability to detect superrefraction. When fully operational, the C2 satellites are expected to produce ~5,000 soundings per day, providing freely available observations that will enable improved forecasts of weather, including tropical cyclones, and weather, space weather, and climate research.
Abstract The FORMOSAT-3/COSMIC mission consisting of six satellites is the world's first dem... more Abstract The FORMOSAT-3/COSMIC mission consisting of six satellites is the world's first demonstration of near real-time operational GPS Radio Occultation (RO) constellation mission. The success of the mission expected to operate through 2011 has initiated a new ...
Changes in levels of BST hormones, insulin, T 3 , 3' T and TSH in blood serum of dairy cows on 6t... more Changes in levels of BST hormones, insulin, T 3 , 3' T and TSH in blood serum of dairy cows on 6th, 7th and 8th day after BST application were studied. The animals were fed 12, 14 and 16 % levels of crude protein in dry matter in feed rations at the same time.
Page 1. 1 Operations Challenges from the FORMOSAT-3/COSMIC Constellation for Global Earth Weather... more Page 1. 1 Operations Challenges from the FORMOSAT-3/COSMIC Constellation for Global Earth Weather Monitoring Chen-Joe Fong§*, Nick Yen§, Vicky Chu§, Shao-Shing Chen§, and Sien Chi §F8, No. 9, Prosperity First ...
2007 3rd International Conference on Recent Advances in Space Technologies, 2007
Skip to Main Content. IEEE.org | IEEE Xplore Digital Library | IEEE Standards Association | Spect... more Skip to Main Content. IEEE.org | IEEE Xplore Digital Library | IEEE Standards Association | Spectrum Online | More IEEE Sites. IEEE Xplore Digital Library. Search Term(s). Advanced Search | Preferences | Search Tips. ...
... Chen-Joe Fong§*, Nick Yen§, Vicky Chu§, Eddy Yang§, Cheng-Yung Huang§, Shao-Shing Chen§, Yuei... more ... Chen-Joe Fong§*, Nick Yen§, Vicky Chu§, Eddy Yang§, Cheng-Yung Huang§, Shao-Shing Chen§, Yuei-An Liou4, and Sien ... The relative orbital separation angle, the relative Augment of Latitude (AOL), Right Ascension Ascending Node (RAAN), and the relative altitudes ...
摘要: The FORMOSAT-3/COSMIC (Constellation Observing System for Meteorology, Ionosphere, and Climat... more 摘要: The FORMOSAT-3/COSMIC (Constellation Observing System for Meteorology, Ionosphere, and Climate) mission consisting of six low-Earth-orbit satellites is the world's first demonstration of Global Positioning System radio occultation in a near real-time ...
IEEE Transactions on Geoscience and Remote Sensing, 2007
The Formosa Satellite-3 and Constellation Observing System for the Meteorology, Ionosphere, and C... more The Formosa Satellite-3 and Constellation Observing System for the Meteorology, Ionosphere, and Climate (FORMOSAT-3/COSMIC) radio occultation (RO) mission has been successfully launched on April 14, 2006. The FORMOSAT-3/ COSMIC mission uses global positioning system (GPS) signals to study the atmosphere and the ionosphere with global coverage. Receivers that are installed onboard of the six small FORMOSAT-3/COSMIC satellites register the phase and the amplitude of radio waves at two GPS frequencies. We give a preliminary analysis of the first RO measurements that are provided by the FORMOSAT-3/COSMIC mission. The geographical distribution of the first FORMOSAT-3/COSMIC RO experiments is shown. We demonstrate that the performance of the first measurements allows obtaining the vertical profiles of the refractivity, temperature, and pressure for the considered FORMOSAT-3/COSMIC RO events with expected accuracy, which is quite similar to the accuracy of the previous Challenging Mini-Satellite Payload and Gravity Recovery and Climate Experiment RO missions. New elements in the RO technology are suggested for further improving the accuracy and broadening the application range of the RO method. We emphasize new directions in applying the RO method to measure the vertical gradients of the refractivity in the atmosphere, to determine the temperature regime in the upper stratosphere, and to investigate the internal wave activity in the atmosphere. We find a significant correlation between the phase acceleration and the intensity variations in the RO signals that are emitted by GPS satellites and registered by the FORMOSAT-3/ COSMIC satellites. This correlation opens a way to locate the layered structures in the propagation medium based on simultaneous observations of the radio wave intensity and the phase variations in trans-ionospheric satellite-to-satellite links.
This paper describes the current planning and design of the YamSat, the first picosatellite being... more This paper describes the current planning and design of the YamSat, the first picosatellite being developed in Taiwan. The design, analysis, manufacture, integration, test and operation of the YamSat will be performed by the National Space Program Office (NSPO), Taiwan, R.O.C, in cooperation with other domestic organizations and companies. It is a member of the CubeSat [1], 10cm x 10cm x 10cm size and within 1kg mass. The major objective of the YamSat is to qualify in space the components and technology developed in Taiwan, including a micro-spectrometer payload using Micro Electro Mechanical Systems (MEMS) technology. The YamSat will be ready for flight in the middle of 2002.
The YamSat is the first developed picosatellite in National Space Program Office's (NSPO), Taiwan... more The YamSat is the first developed picosatellite in National Space Program Office's (NSPO), Taiwan, R.O.C. It is scheduled to flight in the CubeSat launch in 2003. The rapid-prototyping system engineering different from the past formal discipline opens a new satellite development model in NSPO. The YamSat Test Readiness Review Meeting was successfully held in January 2002 and the environmental tests were completed by end March 2002. Besides the breadboard model and engineering test bed to prove of operation concept are built, three YamSats (1A, 1B, & 1C) instead of one are manufactured with slightly different configurations and purposes. The YamSat-1A is for flight with ambitious and novel R.O.C. made components, including 15 domestic organizations and companies' participation. The YamSat-1B is basically for backup purpose and demonstration, whereas the YamSat-1C is for amateur communication experiment end-to-end field test, and for public education purpose. This new experience gives fruitful lessons learned and provides low cost space experimentation and education to the next built picosatellites in Taiwan's universities. Detailed mission and lessons learned are addressed in this paper. TABLE OF CONTENTS 1. Introduction 2. YamSat Program Overview 3. YamSat Design and Analysis 4. Integration and Test 5. ROC Made Component 6. Lessons Learned 7. Conclusions 8. Acknowledgements 9. References brought to you by CORE View metadata, citation and similar papers at core.ac.uk provided by DigitalCommons@USU SSC02-X-6 Chen-Joe Fong 2 16 th Annual AIAA/USU Conference on Small Satellites YamSat development schedule. Y-AM mission The objectives of the YamSat program are "Y-A-M" and addressed hereafter. The first letter "Y" represents a vital and native yam, which is like the shape of the Taiwan Island. In this program we try to use as many as possible of ROC made components, for example, the solar cell, micro-controller, magnetic coil, antenna deployed mechanism, structure, … etc. The letter "Y" also means a team of NSPO young engineers to develop a low-cost, short scheduling, quick turnaround program capability and model. This includes conceptual feasibility study, program planning, program execution, components procurement, system design and development, manufacture, assembly, integration, testing, ground station build-up and mission operation. The second letter "A" represents the amateur radio VHF communication payload used in the program. The Taiwan Amateur Satellite Association (TAMSAT) provides their technology support on both of the TT&C subsystem and the amateur communication experiment. YamSat also uses the newly-built amateur communication ground station. The amateur communication experiment will be presented to the worldwide amateur radio users. The third letter "M" represents the micro-spectrometer payload in which the diffraction device is based on the MEMS technology. The micro-spectrometer is used to measure the sunlight scattering spectrum from the atmosphere and is developed by the Precision Instrument Development Center Remote Sensing Lab (PIDC), Taiwan, R.O.C.
Terrestrial, Atmospheric and Oceanic Sciences, 2009
The FORMOSAT-3/COS MIC space craft con stel la tion con sist ing of six LEO sat el lites is the w... more The FORMOSAT-3/COS MIC space craft con stel la tion con sist ing of six LEO sat el lites is the world's first op er a tional GPS Ra dio Occultation (RO) mis sion. The mis sion is jointly de vel oped by Tai wan's Na tional Space Or ga ni za tion (NSPO) and the United States' UCAR in col lab o ra tion with NSF, USAF, NOAA, NASA, NASA's Jet Pro pul sion Lab o ra tory, and the US Na val Re search Lab o ra tory. The FORMOSAT-3/COS MIC sat el lites were suc cess fully launched from Vandenberg US AFB in Cal i for nia at 0140 UTC 15 April 2006 into the same or bit plane of the des ig nated 516 km al ti tude. The mis sion goal is to de ploy the six sat el lites into six or bit planes at 800 km al ti tude with a 30-de gree sep a ra tion for evenly dis trib uted global cov er age. All six FORMOSAT-3/COS MIC sat el lites are cur rently main tain ing a sat is fac tory good state-of-health. Five out of six sat el lites have reached their fi nal mis sion or bit of 800 km as of No vem ber 2007. The data as re ceived by FORMOSAT-3/COS MIC sat el lites con stel la tion have been pro cessed in near real time into 2500 good ion o spheric pro files and 1800 good at mo spheric pro files per day. These have out num bered the world wide ra dio sondes (~900 mostly over land) launched from the ground per day. The pro cessed at mo spheric RO data have been as sim i lated into the Nu mer i cal Weather Pre dic tion (NWP) mod els for real-time weather pre dic tion and ty phoon/hur ri cane fore cast ing by many ma jor weather cen ters in the world. This pa per de scribes the FORMOSAT-3/COS MIC sat el lite con stel la tion sys tem per for mance and the mission results that span the period from April 2006 to October 2007; and reviews the prospect of a future follow-on mission.
COSMIC/FORMOSAT-3 is a joint U.S.-Taiwan 6-microsatellite demonstration mission that was launched... more COSMIC/FORMOSAT-3 is a joint U.S.-Taiwan 6-microsatellite demonstration mission that was launched in April 2006. It is the world's first operational GPS radio occultation (RO) mission for global Earth weather forecasting; climate monitoring; and atmospheric, ionospheric, and geodetic research. The GPS-RO data has been demonstrated to be valuable to the climate, meteorology, and space weather communities. COSMIC has proven to increase the accuracy of the predictions of hurricane/typhoon behavior, significantly improve long-range weather forecasts, and monitor climate change with unprecedented accuracy. COSMIC will reach the end of its design life in 2011, and the critical capability it provides has already begun to degrade as satellites reach their end of life. As a result, NOAA and NSPO intend to jointly develop and launch COSMIC-2, a high-reliability next generation follow-on system. COSMIC-2 will provide the next generation of global navigation satellite system (GNSS)-RO data to users who critically depend on it.
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