Onboard orbit determination using GPS observations based on the unscented Kalman filter

• Published in: Advances in space research Vol. 46; no. 11; pp. 1440 - 1450
• Main Authors: Choi, Eun-Jung, Yoon, Jae-Cheol, Lee, Byoung-Sun, Park, Sang-Young, Choi, Kyu-Hong
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.12.2010; Elsevier
• Subjects: Astronomy; Earth, ocean, space; Exact sciences and technology; Extended Kalman filter; External geophysics; GPS C/A code pseudorange; Navigation solutions; Onboard orbit determination; Spaceborne GPS receiver; Unscented Kalman filter; Onboard orbit determination; Navigation solutions; Spaceborne GPS receiver; GPS C/A code pseudorange; Unscented Kalman filter; Extended Kalman filter; Real time systems; Second order; Atmospheric pressure; Bias; Space borne GPS receiver; Covariance; System performance; Dynamics; Series expansion; Orbit determination; Taylor expansion; Kalman filters; Dynamic model; Solar radiation; Nonlinear systems; Gravity; Numerical integration; Satellite observation; Taylor series; Low earth orbit satellite; Synchronization; Sun; Radiation pressure; Global Positioning System; Algorithms; Drag; Transition state; Disturbances; Positions; Earth orbit; CHAMP satellite

Spaceborne GPS receivers are used for real-time navigation by most low Earth orbit (LEO) satellites. In general, the position and velocity accuracy of GPS navigation solutions without a dynamic filter are 25 m (1 σ) and 0.5 m/s (1 σ), respectively. However, GPS navigation solutions, which consist of...