DOPPLER Only Navigation Using the TIMATION II Satellite
Abstract
The TIMATION (TIME NAVIGATION) satellite navigation system has been proposed for the Department of Defense Navigation Satellite System (DNSS). TIMATION has the capability of providing worldwide instantaneous and continuous three-dimensional position fixes and high-accuracy time transfer via satellite. The TIMATION project is conducted by the Naval Research Laboratory under the sponsorship of the Navy Space Project Office (PME 106) and the Naval Air Systems Command. Two passive-measurement techniques are employed by the TIMATION system. The primary measurement technique uses passive ranging, which is accomplished by measuring the time difference between the navigator's clock and the satellite clock. With the second technique, the satellite transmitter frequency's doppler shift is measured; this is accomplished by measuring the frequency difference between the navigator's frequency source and the satellite frequency standard. A position fix may then be calculated by use of (1) range measurements only, (2) simultaneous range-doppler measurements, or (3) doppler measurements with time synchronization derived from ranging. This report presents an analysis of the navigation and frequency difference results using doppler measurements from the TIMATION II satellite.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 03, 1973
- Accession Number
- AD0528266
Entities
People
- Charles W. Arvey
- Hugh B. Gardner
- Thomas B. Mccaskill
Organizations
- United States Naval Research Laboratory