Receiver tracking apparatus and method for realizing receiver tracking

Abstract

The embodiment of the invention discloses a receiver tracking apparatus and a method for realizing receiver tracking. The method comprises: a tracking loop is determined to relying on a frequency locked loop (FLL) or a phase locked loop (PLL); for the tracking loop relying on the frequency locked loop, according to a frequency discrimination result, the effect of the frequency locked loop in the tracking loop is adjusted; and for the tracking loop relying on the phase locked loop, the effect of the phase locked loop in the tracking loop is adjusted based on a frequency discrimination result. According to the method disclosed by the invention, the tracking loop relying on the frequency locked loop or the phase locked loop is adjusted based on the frequency discrimination result, thereby realizing the dynamic performance and tracking precision of the tracking loop simultaneously; and on the basis of a carrier to noise ration, the time length of the coherent integration is determined, so that the time length of the coherent integration is adjusted timely.

Description

technical field [0001] The invention relates to receiver tracking technology, in particular to a receiver tracking device and a method for realizing receiver tracking. Background technique [0002] Global Navigation Satellite System (GNSS, Global Navigation Satellite System) is playing an increasingly irreplaceable role in people's daily life, especially in the fields of navigation, exploration, monitoring, measurement, communication timing, etc. . With the rapid development of civilian applications in recent years, the global satellite navigation system has gradually deepened in daily life. From mobile phones, personal computers, automobiles, civil aircraft to missiles and fighters, satellite navigation technology is inseparable. All major countries in the world are striving to develop satellite navigation technology. Currently, there are multiple satellite navigation systems. Countries compete independently to develop satellite navigation technology and mutually compatibl...

AI Technical Summary

Problems solved by technology

[0005] Although the above method hopes to improve the performance of the carrier tracking circuit by combining the advantages of the frequency-locked loop and the phase-locked loop, the dynamic performance and the tracking accuracy cannot be taken into account

When the receiver is in a high dynamic environment, the tracking loop uses a frequency-locked loop, which can only take into account the dynamic adaptability of the tracking, and its tracking performance will be very poor

When the receiver is in a low-to-medium dynamic environment, the tracking loop chooses a phase-locked loop, which can only take into account the high-precision performance of tracking, and its dynamic performance will be poor

When the signal received by the receiver is very weak, the integration part will choose a longer integration time to improve the signal-to-noise ratio of the signal, and a longer integration time will greatly damage the dynamic performance of the frequency-locked loop

When the signal received by the receiver is very strong, if the integration time is too long at this time, the tracking accuracy of the phase-locked loop will be seriously deteriorated

Therefore, the methods in the related art cannot adjust the duration of the coherent integration in real time according to the environment of the loop tracking, and take into account the tracking accuracy while ensuring the dynamic performance of the tracking loop

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