Signal processing method, device, electronic equipment and storage medium of spaceborne receiver

Abstract

The present application provides a signal processing method, device, electronic equipment and storage medium of a satellite-borne receiver. The method includes: capturing the spread spectrum signal sent by the user; according to the pilot band of the spread spectrum signal, estimating and roughly compensating the frequency offset and local code phase offset of the spread spectrum signal, and tracking the code phase of the roughly compensated spread spectrum signal Offset, finely adjust the local code phase; after the spread spectrum signal is tracked and stabilized, the service segment of the spread spectrum signal sent by each user is divided into multiple sub-service segments for buffering, and the cached sub-service segment data is sequentially demodulated; Determine the user's communication rate according to the user's transmission service indicated by the user's service segment; divide the user's data segment with a communication rate deviation value within the preset threshold range into multiple sub-data segments for caching, and sequentially cache the cached sub-services The segment data is demodulated. The application can realize low-delay processing of signals of different communication services, adapt to multi-rate signal demodulation of different services, and has low complexity.

Description

technical field [0001] The present application relates to the technical field of satellite communication, in particular to a signal processing method, device, electronic equipment and storage medium of a satellite-borne receiver. Background technique [0002] The low-orbit satellite communication system is one of the more and more widely used communication systems in recent years. Compared with high- and medium-orbit satellites, the transmission distance of low-orbit satellite communication systems is shorter than other communication systems, which can not only reduce the power of ground terminal transmitters, but also ensure low delay in information transmission. [0003] Different satellite service businesses correspond to different information rates. In general, the transmission rate required for messages is low, while the transmission of voice, image and video information often requires a high transmission rate to ensure low delay of information. However, the tradition...

AI Technical Summary

Problems solved by technology

However, the traditional low-orbit satellite communication system only provides a single service, and cannot realize low-latency processing of multi-service signals with different rates

In addition, due to the strict control of the volume, weight and power consumption of low-orbit satellite communication payloads, on-board computing resources, storage resources, and energy supply are severely limited. Storage resources increase the processing delay, and at the same time, the estimation accuracy of the frequency offset is not high, which loses the significant advantages of low delay and large throughput of the low-orbit satellite communication system

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