Radar measurement method, device, equipment, medium and product

By dividing the radar measurement into main lobe and side lobe regions and applying a phase modulation strategy in two observations, the unit excitation weighting vector is optimized to achieve coherent superposition. This solves the bottleneck of resolution and anti-interference performance of traditional radar under fixed aperture and improves the monitoring accuracy of radar.

CN120993336APending Publication Date: 2025-11-21CHINA ACAD OF SAFETY SCI & TECH +1
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Patent Information

Application Number
CN202511278718.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-09
Publication Date
2025-11-21

AI Technical Summary

Technical Problem

Traditional array radars, constrained by a fixed aperture, struggle to simultaneously improve resolution and anti-interference performance without altering array size. This is particularly true in applications such as slope radar, where scattered echoes from adjacent main lobe illumination areas are difficult to separate, resulting in severe tailing interference of the main peak in one-dimensional images and impacting measurement accuracy.

Method used

By dividing the spatial angle into main lobe and side lobe regions and applying phase modulation strategies in two observations respectively, the main lobe region maintains phase consistency while the side lobe region is 180° out of phase. By optimizing the unit excitation weighting vector, coherent superposition is achieved, and side lobe interference is suppressed.

Benefits of technology

Without increasing the array size, the radar's anti-jamming capability and spatial resolution are significantly improved, the main peak trailing interference is reduced, and the target detection accuracy is increased.

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Abstract

The invention discloses a radar measurement method, device and equipment, a medium and a product, and relates to the technical field of radar signal processing. According to the method, a space angle is divided into a main lobe area and a side lobe area; determining a phase modulation strategy of twice observation of the radar; the phase modulation strategy comprises the steps that phases of a main lobe area are kept consistent in two observations, and the phase difference of a side lobe area is 180 degrees; according to a phase modulation strategy, determining a directional diagram of expected radiation of the array antenna in two times of observation, and optimizing a unit excitation weighting vector in two times of observation to obtain an optimized value of the unit excitation weighting vector; according to the optimization value, performing phase modulation on a transmitting signal of the array antenna; and coherent superposition is carried out on echo signals reflected by the target and received by the radar in two times of observation. On the premise that the array size is not changed, the anti-interference capability and the spatial resolution of the radar are remarkably improved, and the monitoring precision of the radar on parameters such as distance, speed, deformation and angle is effectively improved.
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