Geosynchronous orbit dual-frequency radar intelligent detection and imaging integrated system design method

By combining L/C dual-band radar intelligent detection and imaging integrated system, the problems of traditional radar being unable to acquire image information and high power consumption of geostationary orbit SAR are solved, realizing efficient long-term observation and high-precision imaging of moving targets.

CN121806008APending Publication Date: 2026-04-07NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Patent Information

Application Number
CN202511805465.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-03
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

Traditional radar detection methods cannot acquire target image information, and geostationary orbit SAR systems consume a lot of power when observing at high frequencies, making it difficult to operate for extended periods.

Method used

The design integrates intelligent detection and imaging with dual-frequency radar in geosynchronous orbit. By combining L/C dual-band wave positions, target grouping is performed using L-band target tracking information, which provides indication for C-band wave position selection, enabling sparse zoom imaging and saving on-board resources.

Benefits of technology

It enables long-term observation and high-precision imaging of moving targets, reduces the high-frequency imaging energy consumption of SAR satellites, and improves the value of information acquisition.

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Abstract

The invention discloses a geosynchronous orbit double-frequency radar intelligent detection and imaging integrated system design method, which comprises the following steps of: constructing a geosynchronous orbit L-band system wave position selection schematic diagram, and designing a wave position and related parameters; target grouping is realized on the basis of information such as multi-batch target speeds and position time sequences obtained through L-band target detection and tracking; constructing a geosynchronous orbit C wave band system wave position selection schematic diagram, wherein the designed multiple wave positions can fully cover L wave band footprints; c-band wave position intelligent selection is carried out based on grouping information, and high-frequency-band long-time observation of the target is realized; and sparse SAR imaging is carried out on incomplete aperture echo data obtained in tracking observation. According to the invention, on the basis of the designed L / C dual-band wave position, target tracking information of the L band is utilized to group multiple moving targets, indication information is provided for intelligent selection of the wave position of the C band, long-time observation of the moving targets and sparse zoom imaging of supporting the moving targets are realized, and satellite resources are effectively saved.
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