A method and device for obtaining observation noise

Abstract

The invention relates to a method for acquiring observation noises and a device for acquiring observation noises. The method includes the following steps that: an inter-satellite single-difference observation model is built according to an original observation model; an inter-epoch double-difference observation model is built according to the built inter-satellite single-difference observation model; a common satellite is selected, and the observation values of the common satellite at two adjacent epochs and the observation values of a receiver at the two adjacent epochs tare obtained; and observation noises are determined according to the built single-difference observation model, the built inter-epoch double-difference observation model, the obtained observation values of the common satellite at the two adjacent epochs and the obtained observation values of the receiver at the two adjacent epochs. With the method and device of the invention adopted, noise analysis of the single receiver is realized, and the observation noises of the receiver can be acquired efficiently and rapidly.

Description

technical field [0001] Embodiments of the present invention relate to but are not limited to the field of satellite navigation, especially a method and device for acquiring observation noise. Background technique [0002] At present, the global satellite navigation and positioning system (GNSS) is composed of the global positioning system (GPS) of the United States, the GLONASS positioning system of Russia, the Beidou of China and the Galileo positioning system of the European Union. Among them, China's Beidou has launched 16 satellites, including 5 Medium Earth Orbit (MEO, Medium EarthOrbit) satellites, 5 Inclined Geosynchronous Satellite Orbit (IGSO, Inclined Geosynchronous Satellite Orbit) satellites and 6 Geosynchronous Orbit (GEO) satellites. , Geostationary Earth Orbit) satellite, which realizes the positioning function in the Asia-Pacific region. [0003] The level of satellite positioning accuracy not only depends on the positioning algorithm and positioning mode, b...

AI Technical Summary

Problems solved by technology

Although this method can eliminate the above-mentioned various errors, it needs to connect two receivers to the same antenna, but because the performance of the two receivers used may be different, the method of double difference between stations can only get two receivers combined noise of the two receivers, and the individual noise of the two receivers cannot be separated, making it difficult to determine how much the individual noise of the two receivers is

At present, most high-precision receivers are all-in-one machines integrating antennas and boards. It is also difficult to connect two receivers through an antenna power divider.

Images