Accession Number:

ADA034768

Title:

The Double Pass Method for More Precise Determinations of Longitude and Geoidal Height Using the Transit System of Navigational Satellites,

Descriptive Note:

Corporate Author:

HAWAII INST OF GEOPHYSICS HONOLULU

Personal Author(s):

Report Date:

1975-07-01

Pagination or Media Count:

79.0

Abstract:

Using the Stansell 1970 elevation correction for navigational satellites together with the double pass method of Anderle 1971 and Greely 1971 but for individual navigational satellites on two consecutive passes, it is shown that uncertainties in longitude position can be reduced to the order of 10 to 18 m for land stations with just a few observations, and less than 4 m for dock-side ship stations taken over a period of a week. It is also shown that the method allows identification of satellites not giving reliable data and permits conclusions to be reached as to the cause of an apparent error dependence on surface elevation noted above 1000 m in the Andean region of Colombia, South America, reported by Woollard and Thompson 1974. An additional advantage of the double pass method brought out is that it allows geoidal heights to be determined for remote islands with the same degree of reliability as their position and comparable to the best, continental determinations of geoidal height using standard geodetic measurements. Author

Subject Categories:

  • Geodesy
  • Unmanned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE