Direction finding method based on normalized power directional diagram
By employing a direction finding method based on normalized power patterns, and utilizing digital normalized power patterns and polynomial fitting, the problem of slow direction finding speed of parabolic antennas is solved, achieving efficient and accurate direction finding results.
CN121995307APending Publication Date: 2026-05-08THE 54TH RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION
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Patent Information
- Application Number
- CN202610132158.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-30
- Publication Date
- 2026-05-08
AI Technical Summary
Technical Problem
Existing direction finding methods based on parabolic antennas suffer from response delays due to mechanical scanning, resulting in less than ideal direction finding speeds and making it difficult to improve direction finding efficiency while preserving directivity and high accuracy.
Method used
A direction finding method based on normalized power pattern is adopted. The matching calculation is performed by combining the digital normalized power pattern with a small amount of scanning motion, and polynomial fitting is performed by truncation through orthogonal tangent group to generate digital pattern data.
Benefits of technology
Without changing the antenna hardware, the direction finding speed and accuracy were improved, and the data storage requirements were reduced.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a direction finding method based on a normalized power directional diagram, and belongs to the technical field of antennas. According to the method, a digital normalized power directional diagram is utilized, matching calculation is carried out in combination with a small amount of scanning motion, and the angular position of a direction finding target can be rapidly and accurately determined. Meanwhile, polynomial fitting is carried out after a normalized power directional diagram is intercepted based on an orthogonal section group, and directional diagram data is digitalized by fitting parameters, so that the data storage amount is greatly reduced. According to the invention, under the condition that the hardware of the antenna device is not changed, the direction finding precision is ensured, and the direction finding speed is obviously improved.
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