GPS navigation solution

　　Global Positioning System (GPS) is the abbreviation of word -abbreviations in English Global Positioning System. Its meaning is to use the navigation satellite for measurement and ranging to form a global positioning system. It is a new generation satellite navigation positioning system developed by the US Department of Defense with a comprehensive real -time real -time three -dimensional navigation and positioning capabilities in the sea, land, and air. The core of the GPS user part is the GPS receiver. It is mainly composed of the baseband signal processing and navigation solution. The baseband signal processing section mainly includes two -dimensional search, capture, tracking, pseudo -distance calculation, navigation data decoding of GPS satellite signals. The navigation solution section mainly includes various visual satellite position calculations based on the star calendar parameters in the navigation data; the star clock error, relativity error, the influence of the earth's rotation, signal transmission error (mainly including electrical ionization according to the various error parameters in the navigation data (mainly including electrical ionization The calculation of various real -time errors such as layer real -time transmission errors and real -time transmission errors of stream layers) is eliminated from the pseudo -distance distance; DOP) performs real -time calculation and monitoring to determine the accuracy of the positioning solution. In this article, the navigation solution part of the GPS receiver is discussed. The baseband signal processing part can be refer to the relevant information. The assumption discussed in this article is that the GPS receiver has effectively captured and tracking the GPS satellite signal, calculated the pseudo -distance distance, and understood the navigation data.

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