Method for calculating instanteneous characteristic of a satellite in orbit equipped with a gnss receiver

摘要

The present invention relates to a method for calculating the instantaneous characteristics of a satellite in orbit equipped with a GNSS receiver, capable of performing measurements of pseudo-distance, when fewer than four transmitters are simultaneously in visibility. This method comprises the following stages: ;a first stage (20) of pre-processing of quantities measured by the receiver to deliver measurements of pseudo-distance, pseudo-speed and instantaneous pseudo-accelerations; ;a second stage (21) of mathematically processing these measurements, enhanced by the knowledge of complementary data concerning the orbit of the receiver satellite and the receiver, delivering several solutions, ;a third stage (22) of physically filtering these solutions delivering the position and the speed of the receiver satellite as well as the clock bias and drift of the receiver.