Radar-communication combined system optimum waveform design method based on radio frequency invisibility

A joint system and radio frequency stealth technology, applied in the field of optimal waveform design of radar-communication joint system based on radio frequency stealth, can solve the problems such as the optimization design method of radio frequency stealth waveform of radar-communication joint system, etc., to improve the performance of radio frequency stealth , the effect of ensuring the required communication rate

Active Publication Date: 2019-03-12
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0003]However, in the prior art, there is no optimal design method for radio frequency stealth waveform of radar-communication joint system

Method used

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  • Radar-communication combined system optimum waveform design method based on radio frequency invisibility
  • Radar-communication combined system optimum waveform design method based on radio frequency invisibility
  • Radar-communication combined system optimum waveform design method based on radio frequency invisibility

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Embodiment Construction

[0032] This specific embodiment discloses a radar-communication joint system optimal waveform design method based on radio frequency stealth. The radar-communication joint system is as follows: figure 1 As shown, this method is as figure 2 shown, including the following steps:

[0033] S1: Obtain prior information of the target relative to the radar-communication joint system;

[0034] S2: Estimating the performance mutual information threshold φ according to the given target parameters MI and communication rate threshold C min , establish a mathematical model for the optimal design of the waveform A[n] on the nth subcarrier, and obtain the modulus square expression of the optimal transmit waveform on the nth subcarrier of the radar-communication joint system according to the model.

[0035] The prior information in step S1 includes frequency response, propagation loss of each path, and noise power.

[0036] The mathematical model in step S2 obtains according to formula (...

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Abstract

The invention discloses a radar-communication combined system optimum waveform design method based on radio frequency invisibility. The method includes the following steps that S1, prior information of a target relative to a radar-communication combined system is acquired; S2, the mutual information threshold theta MI and the communication rate threshold Cmin of the performance are estimated according to given target parameters, a mathematical model of waveform A[n] optimization design on an n sub-carrier is established, and an expression of a modulus square of an optimum transmitted waveform on the n sub-carrier of the radar-communication combined system is acquired according to the model. By means of the method, the requirements of target parameter estimation performance and communication rates are met, and the radio frequency invisibility performance of the system is improved.

Description

technical field [0001] The invention relates to radar waveform design, in particular to an optimal waveform design method for a radar-communication joint system based on radio frequency stealth. Background technique [0002] In the warfare of today's information age, both radar and communication systems play a pivotal role, and both are indispensable. Only by accurately detecting, locating, and tracking targets through radar can we effectively strike and destroy enemy weapons and combat platforms; only through the data communication of the communication system can we ensure the smooth flow of information and data sharing on our own battlefield. Radar and communication systems are functionally distinct, resulting in many significant differences in both hardware and software, but there are also some similarities, such as antennas, high-power transmitters, receivers, signal processing units, control System and power system, etc., and the working frequency bands of the two are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/02G01S7/38
CPCG01S7/02G01S7/38Y02D30/70
Inventor 时晨光汪飞李海林周建江夏伟杰孔莹莹
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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