Accession Number:

ADA242360

Title:

Satellite Radio Interferometry

Descriptive Note:

Final rept. 29 Apr 86-30 Apr 91,

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE

Personal Author(s):

Report Date:

1991-07-31

Pagination or Media Count:

31.0

Abstract:

Satellite radio interferometry techniques of geodesy, whereby relative positions of earth surface points and orbits of earth satellites are determined from phase difference measurements of radio signals propagating from the satellites to the earth surface points or vice versa, were investigated under this contract. R.m.s. scatter of relative position vector determinations was 2 millimeters for horizontal coordinates of earth surface points separated by about 150 kilometers in the vicinity of Houston, Texas, when the orbits of the NAVSTAR Global Positioning System satellites whose carrier signal phases were measured at these points were determined simultaneously from seven hours of phase measurements at a network of stations spanning 320 kilometers, without atomic frequency standards. Related techniques for determining positions of earth surface radio transmitters observed via repeater satellites were also investigated.

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Navigation and Guidance

Distribution Statement:

APPROVED FOR PUBLIC RELEASE