A Terrain Correction Method for Meter-Wave Radar Based on Digital Elevation Model

A digital elevation model and meter wave radar technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as large computational load, difficult terrain correction, and reduced angle measurement accuracy, and achieve the effect of simplifying the correction process and reducing the correction cost.
CN108983169BActive Publication Date: 2022-08-02XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2022-08-02

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Abstract

The invention discloses a metric wave radar terrain correction method based on a digital elevation model, which belongs to the technical field of metric wave radar signal processing. There is a flying target within the detection range of the metric wave radar; obtain the digital elevation model data, and determine the ADS‑B data of the flying target, and then determine the important reflection points in the spherical coordinate system; ‑B data and determine important reflection points, obtain the results of the correlation between the ADS‑B data of the flying target and the metric wave radar terminal data, and then obtain the altitude curve of the flying target; The metric wave radar altimetry error curve is corrected, and the final error correction result is obtained as a topographic correction result of the metric wave radar based on the digital elevation model.
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Description

technical field

[0001] The invention belongs to the technical field of metric wave radar signal processing, and particularly relates to a method for terrain correction of metric wave radar based on a digital elevation model, which is suitable for the research on the refinement of radar altimetry and angle measurement. Background technique

[0002] Meter-wave radar, also known as VHF radar, belongs to long-wave radar, so it has the advantages of long detection distance, anti-stealth and anti-jamming. Indistinguishable; on the other hand, there is the problem of beam hitting the ground, which leads to lobe splitting, and the target elevation angle estimation is biased at low elevation angles; for the above-mentioned multipath effect problems that currently exist in metric wave radars, through a lot of analysis and research, mainly from the algorithm The problem is solved in two aspects: improvement and algorithm correction. Specifically, on the one hand, the algorithm of angle...

Claims

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