Accession Number:

AD0770989

Title:

A Comparison of Densities Deduced from Radar Determined Orbital Decay and Accelerometer Measurements from Low Altitude Satellites,

Descriptive Note:

Corporate Author:

AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s):

Report Date:

1973-11-21

Pagination or Media Count:

19.0

Abstract:

A comparison has been made of atmospheric density as deduced from high resolution radar-determined orbital decay data and from data supplied by a uniaxial MESA accelerometer flown onboard two low altitude satellites in June-July and August-September, 1970. The radar deduced densities, having an effective six hour time resolution, were determined at altitudes of 143 km and 169 km, very close to one-half scale height above perigee for the two satellites respectively. The accelerometer-deduced densities at these same altitudes were obtained on both the approaching-perigee and leaving-perigee portion of each of 59 orbits for the lower altitude satellite and each of 250 orbits for the higher altitude satellite. A detailed time comparison of the densities derived from radar-tracking and the accelerometer is presented. Modified author abstract

Subject Categories:

  • Atmospheric Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE