Method for fast capturing COMPASS signal
A signal and fast technology, applied in the field of satellite navigation, can solve problems such as speed limit, achieve the effect of increasing speed, shortening time-consuming, and ensuring capture accuracy
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[0033] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.
[0034] Take the capture of COMPASS-B1 signal as an example below, combined with figure 1 Describe in detail. figure 1 It is a flowchart of the fast capture of COMPASS signals of the present invention.
[0035] Since the COMPASS-B1 signal is affected by Doppler frequency shift, the frequency shift range is between -10KHz~10KHz. After down-conversion, the signal frequency becomes f-10KHZ~f+10KHZ, and considering the power consumption of hardware resources, Therefore, in ...
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