A method for analyzing diversity multiplexing gain of HAP MIMO radar system

By analyzing the diversity and multiplexing gain of the HAPMIMO radar system, the performance trade-off between radar and communication systems within an integrated framework was resolved, thereby improving the detection performance and parameter estimation quality of the radar system.

CN118884371BActive Publication Date: 2025-12-19YANGTZE DELTA REGION INST (QUZHOU) UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Patent Information

Application Number
CN202410932856.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-07-12
Publication Date
2025-12-19
Estimated Expiration
2044-07-12

AI Technical Summary

Technical Problem

Existing research shows that the diversity and multiplexing gains of HAPMIMO radar systems cannot be optimized simultaneously, resulting in a trade-off. Furthermore, current technologies have failed to effectively address the trade-off between radar and communication performance in integrated systems.

Method used

By modeling the time samples observed by the radar receiver, the matched filter outputs of the radar and communication transmitted signals are calculated, the data is rearranged to obtain the diversity gain and multiplexing gain of the radar subsystem, and their trade-off relationship is derived. The minimum mean square error of the parameter estimation is calculated using the maximum a posteriori probability estimation, and the radar performance is evaluated.

Benefits of technology

The performance of the radar system was improved. Through diversity and multiplexing gain analysis of the cooperative MIMO radar-communication integrated system, the radar performance was evaluated and the performance indicators were optimized.

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Abstract

The application discloses a kind of HAPMIMO radar system diversity multiplexing gain analysis methods, comprising, the time sample observed to radar receiver is modeled, and the matching filter output of radar and communication transmitting signal is calculated according to time sample model;Matched filter output is obtained and rearranged data according to the correlation of target reflection coefficient;According to the matching filter output of radar subsystem receiver, the detection problem of target hypothesis with and without is constructed: the probability of missed detection of HAPMIMO radar subsystem is calculated;The diversity gain and multiplexing gain of radar are calculated, and the compromise relationship between the diversity gain and multiplexing gain of radar subsystem is obtained;The radar performance of cooperative MIMO radar communication integrated system is evaluated, and the maximum HAPMIMO communication diversity gain and HAPMIMO communication multiplexing gain are extracted from observation data.The radar performance of cooperative MIMO radar communication integrated system is evaluated, and the performance of radar system is improved in cooperation with MIMO communication system.
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