SPACE NAVIGATION RECEIVER OPERATING WITH THE ASSISTANCE OF NAVIGATION INFORMATION

摘要

A space navigation receiver (RN), comprises i) a radio frequency processing module (MT1) responsible for transforming, on the one hand, into digital navigation signals, radio navigation signals transmitted by a satellite navigation system, and on the other hand, into auxiliary digital signals, auxiliary radio signals representative of navigation information pertaining to said system, ii) a digital processing module (MT2) responsible for periodically acquiring the digital navigation signals, by subsampling the radio signal received, then processing the signal samples acquired (resulting from this subsampling) so as to produce raw measurements on the basis of these samples, the auxiliary digital signals and locating points, and iii) a locating module (ML) responsible for determining locating points on the basis of the raw measurements, of demodulated navigation data, initially contained in the digital navigation signals in a modulated form, and of orbital models of forces.