Accession Number : AD0285045

Title :   PROJECT 861 ORBIT PROGRAMS

Corporate Author : MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB

Personal Author(s) : MATHIASEN,A.A. ; CROWTHER,W.R.

Report Date : 31 AUG 1962

Pagination or Media Count : 58

Abstract : In the Project 861 system, a radar will make observations on the Project 861 orbit and record these on magnetic tape (or, alternatively, on teletype tape). This tape will be processed by a point-selection program which filters the dataAND REDUCES THE AMOUNT TO A MANAGEABLE SIZE. A coordinate-conversion program then maps the data from the radar coordinate system to the geocentric equatorial system. An orbit-fitting program fits to the transformed data a Keplerian orbit. The orbit parameters are then used by a parameter-prediction program for ultimate input to the pointing program which supplies paper tapes with driving information for the Project 861 antennas. The coordinate-conversion program and the orbitfitting program are described. (Author)

Descriptors :   *ORBITS, COMPUTER LOGIC, DATA PROCESSING, MATHEMATICAL ANALYSIS, RADAR STATIONS, RADAR TRACKING

Distribution Statement : APPROVED FOR PUBLIC RELEASE