Results 21 to 30 of about 67,391,839 (291)
Electronics Letters, 2023 The tracking and data relay satellite (TDRS) in geosynchronous orbit (GEO) can provide ranging and communication services for user spacecraft in low Earth orbit (LEO) through the inter‐satellite link (ISL). The time delay of TDRS ISL transponder in orbit
Lei Wang +3 more
doaj +1 more source
Ten Years of SNPP VIIRS Reflective Solar Bands On-Orbit Calibration and Performance
Remote Sensing, 2021 The Visible Infrared Imaging Radiometer Suite (VIIRS) onboard the Suomi National Polar-orbiting Partnership (SNPP) has successfully operated on-orbit for nearly ten years since its launch in October 2011, continuously making global observations and ...
Junqiang Sun +5 more
doaj +1 more source
VIIRS on-orbit calibration and performance update [PDF]
2014 IEEE Geoscience and Remote Sensing Symposium, 2014 The S-NPP VIIRS was launched on October 28, 2011 and activated on November 8, and then went through a series of intensive functional tests in order to establish the sensor's baseline characteristics and initial on-orbit performance. With the exception of large optical degradation in the NIR and SWIR spectral regions that is due to pre-launch mirror ...
Xiaoxiong Xiong +7 more
openaire +1 more source
Overview of PLATO's cameras on-ground and in-orbit calibration and characterisation
, 2021 The PLAnetary Transits and Oscillations of stars mission (PLATO) is the M3 mission in ESA’s Cosmic Vision 2015-2025 Programme, see Rauer et al. (2014).1 The PLATO mission aims at detecting and characterizing extrasolar planetary systems, including ...
Erikson, Anders +7 more
core +1 more source
On-orbit calibration of satellite gyroscopes [PDF]
Astrodynamics Specialist Conference, 2000 In order to maneuver satellites accurately from one attitude to another, onboard rate sensing gyroscopes usually must be calibrated after launch. Several algorithms have been used to determine gyro biases, misalignments, and scale factors. This paper describes algorithms that have been used in the past, discusses their advantages and limitations, and ...
Joseph Hashmall +2 more
openaire +1 more source
Strategies for in-orbit calibration of drag-free control systems [PDF]
, 2008 Drag-Free Satellites (DFS) are a class of scientific satellite missions designed for research on fundamental physics as well as geodesy. They consist, basically, of a small inner satellite (test mass) located in a cavity inside a larger satellite, the ...
Leite Filho, Waldemar Castro +2 more
core +1 more source
On-Orbit Calibration Method for Correction Microwave Radiometer of the HY-2 Satellite Constellation
Remote Sensing, 2023 The HY-2D satellite was successfully launched in 2022, which marks the first phase of the HY-2 satellite constellation. In order to reduce the deviation of wet path delay (WPD) between different satellites in the HY-2 satellite constellation and increase
Xiaofeng Ma +4 more
doaj +1 more source
On-Orbit Manoeuvring Using Superquadric Potential Fields [PDF]
, 2007 On-orbit manoeuvring represents an essential process in many space missions such as orbital assembly, servicing and reconfiguration. A new methodology, based on the potential field method along with superquadric repulsive potentials, is discussed in this
Badawy, Ahmed
core +5 more sources
SITE SELECTION AND EVALUATION OF CHINA'S NEW RADIOMETRIC CALIBRATION TEST SITES [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020 The ideal radiometric calibration site is the basis for achieving on-orbit radiometric calibration. At present, China mainly uses the Dunhuang national test site for on-orbit radiometric calibration.
X. K. Hu +5 more
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TerraSAR-X Calibration - First Results [PDF]
, 2007 As TerraSAR-X, due for launch in February 2007, will be an operational scientific mission with commercial potential, product quality is of paramount importance.
Markus Bachmann +7 more
core +1 more source