A low-orbit multifunctional satellite processing and screening method for reconnaissance targets

Abstract

The invention discloses a low-orbit multifunctional satellite processing and screening method for reconnaissance targets. The method is as follows: first, the satellite ground station uploads the attribute information of the target to be reconnaissance to the low-orbit satellite in the form of an instruction, and the satellite screens multiple targets obtained by the payload on the satellite based on the analysis results; output to the on-board buffer for storage; then, according to the data link formatting message design requirements, extract useful information in k target observation data, including longitude, latitude, altitude, heading, and speed data, and extract the target observation data according to The data link formatted message design requires encapsulation as a data link formatted message; finally, the data link formatted message is sent to the satellite ground station through the downlink. The invention improves the utilization efficiency of channel resources, and improves the freshness and accuracy of information.

Description

technical field [0001] The invention belongs to the technical field of on-board software processing of spacecraft, in particular to a method for processing and screening reconnaissance targets by low-orbit multifunctional satellites. Background technique [0002] Over the years, low-orbit satellites have been limited by platform power consumption, volume, weight and other capabilities, and most of them can only carry a single load, or only work with a single load at the same time. With the rapid development of satellite platform technology and the continuous lightweight and miniaturization of payloads, it has become a basic trend in the development of low-orbit satellites to carry multiple types of reconnaissance payloads such as AIS, ADS-B, high-resolution cameras, and long-wave infrared on the same satellite platform. For multi-payload low-orbit satellites, the traditional information processing method is that the on-board payload obtains multiple reconnaissance target inf...

AI Technical Summary

Problems solved by technology

[0004] (1) The information concentration of the transmitted data is low

All the target data acquired on the satellite is sent through the data transmission channel, the data is poorly targeted, but the ground station only needs specific target information, resulting in low channel bandwidth utilization;

[0005] (2) The timeliness of obtaining useful information is poor

After the ground station fuses the satellite to send data, it needs to extract useful information from the massive data collected. The air interface transmission of multi-hop links and the central data processing all lead to a long delay in the investigation results, and the real-time performance of information processing is poor, making the time of data The freshness is low, which affects the accuracy and timeliness of information acquisition

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