Kalman Filtering and Smoothing in FOTONAP for Orbit Determination Using GPS Measurements.

摘要

The FOTONAP program has been modified to incorporate a Kalman filter and a fixed lag smoother, the capability to handle GPS measurements through the filter/smoother, a Lockheed-Jacchia dynamic atmospheric model, a discretely changing atmospheric drag coefficient (drag segmentation), and the capability to accept as input to the regular FOTONAP the output from the filter/smoother including the full covariance matrix. The derivation of all the required equations is given in this report. Updated versions of FOTONAP exist for both CDC 6400 and Univac 1108 computers.