Real - Time Orbit Determination of Low Earth Orbit Satellites Using Radar System and SGP4 Model

Details Real - Time Orbit Determination of Low Earth Orbit Satellites Using Radar System and SGP4 Model Real - Time Orbit Determination of Low Earth Orbit Satellites Using Radar System and SGP4 Model

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003jass...20...21l&link_type=abstract

Journal of Astronomy and Space Sciences. Vol. 20, no. 1, p.21-28

Astronomy and Astrophysics

Astronomy

Sgp4 Model, Radar System, Extended Kalman Filter, Analytical Orbit Model, Finite Difference

Scientific paper

In case that we independently obtain orbital informations about the low earth satellites of foreign countries using radar systems, we develop the orbit determination algorithm for this purpose using a SGP4 model with an analytical orbit model and the extended Kalman filter with a real-time processing method. When the state vector is Keplerian orbital elements, singularity problems happen to compute partial derivative with respect to inclination and eccentricity orbit elements. To cope with this problem, we set state vector osculating to mean equinox and true equator cartesian elements with coordinate transformation. The state transition matrix and the covariance matrix are numerically computed using a SGP4 model. Observational measurements are the type of azimuth, elevation and range, filter process to each measurement in a lump. After analyzing performance of the developed orbit determination algorithm using TOPEX/POSEIDON POE(Precision Orbit Ephemeris), its position error has about 1 km. To be similar to performance of NORAD system that has up to 3km position accuracy during 7 days need to radar system performance that have accuracy within 0.1 degree for azimuth and elevation and 50m for range.

Affiliated with

Also associated with

No associations

Rating

Real - Time Orbit Determination of Low Earth Orbit Satellites Using Radar System and SGP4 Model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Real - Time Orbit Determination of Low Earth Orbit Satellites Using Radar System and SGP4 Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Real - Time Orbit Determination of Low Earth Orbit Satellites Using Radar System and SGP4 Model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1004239