Satellite signal capturing method and device, equipment and storage medium
A satellite signal acquisition and satellite signal technology, applied in the field of satellite communication, can solve the problems of long time consumption, heavy workload, loss of tracking loop of satellite navigation receiving equipment, etc., and achieve the effect of saving resources and reducing workload
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Embodiment 1
[0064] This embodiment provides a satellite signal acquisition method, such as figure 1 shown, including:
[0065] S101. When the satellite signal receiver detects that the satellite signal is out of lock, close the corresponding tracking channel, and latch the prior information before the satellite signal is out of lock.
[0066] Specifically, as figure 2 As shown, the process of detecting the loss of lock of the satellite signal by the satellite signal receiver includes:
[0067] Obtain the signal power and noise floor of the satellite signal by tracking the satellite signal receiver;
[0068] The number M of times that the signal power is continuously smaller than the noise floor is obtained by comparison, and when the number of times M is greater than a preset threshold value N, it is determined that the satellite signal is out of lock. For example, if the signal power for the first time is less than the noise floor, the count is 1; the signal power for the second time...
Embodiment 2
[0099] This embodiment provides a satellite signal acquisition device, such as Figure 4 shown, including:
[0100] The locking unit is used to close the corresponding tracking channel when the satellite signal receiver detects that the satellite signal is out of lock, and latches the prior information before the satellite signal is out of lock;
[0101] The first determining unit is used to acquire the movement data of the satellite signal receiver in real time, and calculate and determine the real-time speed information and position information of the satellite signal receiver relative to the center of the earth according to the movement data of the satellite signal receiver;
[0102] The second determining unit is used to determine the corresponding lost-lock satellite according to the prior information, and determine its real-time speed information and position information relative to the center of the earth according to the ephemeris of the lost-lock satellite;
[0103] ...
Embodiment 3
[0114] This embodiment provides a satellite signal acquisition device, such as Figure 5 shown, including:
[0115] A satellite signal receiver for receiving satellite signals;
[0116] memory for storing instructions;
[0117] A signal processor, configured to read the instructions stored in the memory, and execute the satellite signal acquisition method in Embodiment 1 according to the instructions.
[0118] The satellite signal receiver may, but is not limited to, use a code correlation type receiver; the memory may, but is not limited to, include a random access memory (Random Access Memory, RAM), a read-only memory (Read Only Memory, ROM), a flash memory ( Flash Memory), First Input First Output (FIFO) and / or First In Last Out (FILO), etc.; the signal processor may, but is not limited to, include a single-chip microcomputer, an ARM processor, etc.; Corresponding tracking loop control module and acquisition control module can also be set to interface with the signal pro...
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Abstract
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Application Information
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