Accession Number:

AD0255078

Title:

PERTURBATIONAL CONSTRUCTION OF RE-ENTRY TRAJECTORIES FOR IMPACT PREDICTION AND RADAR ACQUISITION

Descriptive Note:

Corporate Author:

RCA SERVICE CO PATRICK AFB FLA

Personal Author(s):

Report Date:

1960-10-15

Pagination or Media Count:

1.0

Abstract:

Re-entry trajectories are constructed using a special perturbation procedure based on PICARDs method of successive substitutions by departing from a zero order or reference path. The reference path for the real time impact prediction case is a closed form rectilinear trajectory. For the high precision calculations of radar acquisition the zero order path is the planned path plus constant increments to match the radar observed re-entry initial conditions. Numerical constructions of the first order solutions for relatively large values of the perturbations in the initial conditions show that the end figure errors are sufficiently small. These procedures are conducive to the small total computing times which are essential for real time impact or sequential position prediction. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE