Signal demodulation method, device, computer equipment and storage medium
A technology for signal demodulation and target signal, which is applied to measurement devices, satellite radio beacon positioning systems, instruments, etc., and can solve the problems of discontinuity of initial code phase value, QZSSLEX signal demodulation does not consider hardware receivers, etc. Guaranteed effect of demodulation sensitivity
Active Publication Date: 2022-04-01
ALLYSTAR TECH SHENZHEN CO LTD
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Problems solved by technology
Taking the QZSS LEX signal as the target signal to be demodulated as an example, the initial code phase value of the QZSS LEX signal in each epoch has discontinuity, so the traditional signal tracking method cannot be used to demodulate the QZSS LEX signal
However, the QZSS LEX signal demodulation based on the capture software method does not consider the limiting factors in the actual hardware receiver: 1) how to ensure that the capture engine can be started at the epoch boundary of the QZSS LEX signal; 2) when the demodulation sensitivity is maximum How to ensure the continuity of signal demodulation in the case of
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[0046] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0047] The signal demodulation method provided by this application can be applied to such as figure 1 shown in the application environment. Wherein, the satellite receiver 110 captures the satellite signal transmitted by the satellite 120, and demodulates the captured satellite signal to obtain the navigation message data transmitted by the satellite signal, so as to perform satellite navigation or positioning based on the navigation message data. Satellites 120 include currently visible satellites, such as satellites 122 , satellites 124 , . . . , satellites 12n, and the...
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The present application relates to a signal demodulation method, device, computer equipment and storage medium. Acquire the current epoch information and code phase information of the reference signal; when the epoch information meets the parameter configuration conditions, configure the capture parameters of the capture engine, and configure the start-up delay parameters of the capture engine according to the code phase information; Start the acquisition engine according to the startup delay parameter; the startup time of the acquisition engine is consistent with the epoch start time of the target signal; the code phase value of the target signal is captured by the acquisition engine according to the acquisition parameters , to demodulate the target signal. The continuity of signal demodulation can be realized by this method.
Description
technical field [0001] The present application relates to the technical field of satellite navigation, in particular to a signal demodulation method, device, computer equipment and storage medium. Background technique [0002] Navigation signal demodulation refers to the process of recovering navigation message data from the modulated signal carrying navigation message data. At present, the commonly used navigation signal demodulation method is based on the tracking method for signal demodulation. Taking the QZSS LEX signal as the target signal to be demodulated as an example, the initial code phase value of the QZSS LEX signal in each epoch has discontinuity, so the traditional signal tracking method cannot be used to demodulate the QZSS LEX signal. However, the QZSS LEX signal demodulation based on the capture software method does not consider the limiting factors in the actual hardware receiver: 1) how to ensure that the capture engine can be started at the epoch boundar...
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IPC IPC(8): G01S19/24G01S19/30G01S19/37
CPCG01S19/243G01S19/37G01S19/30
Inventor 王鹏远许玲侯嘉伟邹锦芝于洪涛张伟
Owner ALLYSTAR TECH SHENZHEN CO LTD