Trajectory estimation from tracking data of sounding rockets using the method of differential correction
Abstract
Free flight trajectory of a rocket beyond sensible atmosphere is estimated from the tracking data by method of differential correction. For an unperturbed trajectory a set of initial conditions giving position and velocity is sufficient to determine the trajectory. Initial conditions are determined so that the RMS value of the difference between estimated trajectory and the observed trajectory is minimized. Analytical expressions are derived to evaluate the derivatives of the tracking parameters with respect to initial conditions. The accuracy is specified in terms of the RMS values of errors in altitude, latitude and longitude.
 Publication:

4th Sounding Rocket Technology Conference
 Pub Date:
 June 1976
 Bibcode:
 1976srt..conf....1R
 Keywords:

 Free Flight;
 Radar Data;
 Sounding Rockets;
 Spacecraft Trajectories;
 Trajectory Analysis;
 Azimuth;
 Differential Calculus;
 Free Fall;
 NewtonRaphson Method;
 RootMeanSquare Errors;
 Tracking (Position);
 Astrodynamics