DETERMINATION OF ORBITAL ELEMENTS AND REFRACTION EFFECTS FROM SINGLE PASS DOPPLER OBSERVATIONS
Abstract
A method is presented for the determination of the orbital elements of a satellite by observing, in the course of a single pass, the Doppler shift in the frequency of a radio signal which is either tpler systems, Radar equipment, Data processing systems, Radiofrequency filters, Phase measurement, De sign, Effectiveness.) (Radar reflections, At mospheric refraction, *Ionosphere, Electrons, Measurement.) Symposia. Open-ended Terms: OPLOC. A method is presented for the determination of the orbital elements of a satellite by observing, in the course of a single pass, the Doppler shift in the frequency of a radio signal which is either transmitted or reflected from the satellite. The method of solution consists of applying a series of differential corrections to a compatible set of approximations for the initial position and velocity components. Techniques for determining these approximations with sufficient accuracy to initiate the computation are discussed. The method was developed for the DOPLOC tracking system which employs a narrow bandwidth, phase-locked, tracking filter. The latter has been designed to minimize random errors in Doppler frequency measurements derived from weak signals transmitted over extreme ranges.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1961
- Accession Number
- AD0264648
Entities
People
- R. B. Patton Jr.
- V. W. Richard
Organizations
- Ballistic Research Laboratory