Satellite signal capturing method and device, storage medium and electronic equipment
A satellite signal, satellite technology, applied in the field of electronic control, can solve problems such as low satellite capture efficiency
Active Publication Date: 2020-10-20
南京大鱼半导体有限公司
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[0003] The purpose of this disclosure is to provide a satellite signal acquisition method, device, storage medium and electronic equipment, which are used to solve the low efficiency of satellite acquisition in the prior art The problem
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[0062] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of methods and apparatus consistent with aspects of the disclosure as recited in the appended claims.
[0063] Before introducing the satellite signal acquisition method, device, storage medium and electronic equipment provided in the present disclosure, the application scenarios involved in the various embodiments of the present disclosure are firstly introduced. The application scenario may be a satellite navigation receiver, that is, the execution subject of the satellite signal acquisition met...
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The invention relates to a satellite signal capturing method and device, a storage medium and electronic equipment. The method comprises the following steps: carrying out frequency mixing on the received satellite signals by using the intermediate frequency local oscillator signals; obtaining intermediate frequency signals, acquiring a carrier frequency and a pseudo code of a target satellite according to a preset coarse acquisition carrier frequency; roughly capturing the intermediate frequency signal; obtaining at least one coarse capture code phase corresponding to the coarse capture carrier frequency, and according to a preset fine acquisition carrier frequency sequence and at least one coarse acquisition code phase, finely capturing the intermediate frequency signal; and acquiring anincoherent accumulation value corresponding to the at least one coarse capture code phase under the fine capture carrier frequency, and if the incoherent accumulation value corresponding to the targetcoarse capture code phase is greater than or equal to a preset capture threshold under the target fine capture carrier frequency, taking the target coarse capture code phase and the target fine capture carrier frequency as capture results of the target satellite. The method can effectively reduce the calculation amount and memory consumption in the satellite capturing process, and improves the satellite capturing efficiency.
Description
technical field [0001] The present disclosure relates to the technical field of electronic control, and in particular, to a satellite signal acquisition method, device, storage medium and electronic equipment. Background technique [0002] When a satellite navigation receiver acquires a satellite, it needs to perform rough capture and fine capture of the satellite signal to determine the satellite number, carrier frequency and code phase. The receiver will perform rough acquisition on the down-mixed IF signal according to the coarse frequency offset assumption to obtain the coarse acquisition code phase corresponding to each coarse frequency offset assumption, and then according to each acquired coarse acquisition code phase and fine frequency offset assumption The intermediate frequency signal is finely captured to obtain the carrier frequency and code phase to capture the satellite. During the capture process, it is necessary to calculate the coarse capture code phase cor...
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IPC IPC(8): G01S19/29G01S19/30
CPCG01S19/29G01S19/30
Inventor 周彬朱凌许百成
Owner 南京大鱼半导体有限公司