Method and device for realizing high dynamic navigation tracking

Abstract

The invention discloses a method and device for realizing high dynamic navigation tracking. The method for realizing high dynamic navigation tracking comprises that: a receiver determines information of choosing a loop as information of choosing a loop I and respectively generates a jth-order I path local carrier signal ad a Q path local carrier signal, wherein the frequency of the Jth order I path local carrier signal is Jth regulation frequency; the receiver performs frequency mixing on a correlated signal and a generated I path local carrier signal and the Q path local carrier signal and performs integration on signals of the I path and the Q path after frequency mixing; the receiver performs frequency discrimination processing on a signal after I path integration and a signal after Q path integration to obtain a jth frequency error; the receiver determines that frequency errors of frequencies from a (j+j0)th frequency to a (j+j0+N)th frequency are smaller than a first locking threshold and determines frequency errors of frequencies from j0th frequency to the (j0+N)th frequency or are smaller than or equal to a first preset threshold, and changes information of choosing a loop into information of choosing a loop II.

Description

technical field [0001] The present invention relates to but not limited to navigation receiving technology, especially a method and device for realizing high dynamic navigation tracking. Background technique [0002] With the development of science and technology, human research on navigation and positioning technology has entered the era of satellite positioning. In order to provide accurate position and speed information on a global scale and around the clock, the concept of a Global Navigation Satellite System (GNSS, Global Navigation Satellite System) is proposed. GNSS plays a very important role in many fields, including military, navigation, exploration, monitoring, measurement, communication timing, etc. With the rapid development of civilian applications in recent years, GNSS has gradually deepened in daily life, from mobile terminals, personal Computers, automobiles, civil aircraft, missiles, and fighter planes are all inseparable from satellite navigation technolo...

AI Technical Summary

Problems solved by technology

[0010] In the above method, since the Doppler frequency is large and the frequency changes rapidly in a high dynamic environment, the tracking loop is constantly switched between FLL and PLL, and each switching of PLL and FLL will cause the tracking result to jitter , which greatly deteriorates the tracking effect

In addition, it is difficult to track signals in higher dynamic environments relying only on the adaptability of the FLL to dynamic environments

Therefore, the traditional high dynamic carrier tracking loop has poor adaptability and poor tracking effect in high dynamic environment

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