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A Radar Interference Power Allocation Method for Radar and Communication Joint System

A joint system, radar jamming technology, applied in transmission systems, multi-frequency code systems, radio wave measurement systems, etc., can solve problems such as rare research, and achieve the effect of ensuring radio frequency stealth performance

Active Publication Date: 2019-10-11
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] At present, the research on the radio frequency stealth of fighter jets is mainly concentrated in the field of radar and data link, but there is little research on the active jamming system that is also an airborne radiation source

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  • A Radar Interference Power Allocation Method for Radar and Communication Joint System
  • A Radar Interference Power Allocation Method for Radar and Communication Joint System
  • A Radar Interference Power Allocation Method for Radar and Communication Joint System

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Embodiment Construction

[0041] The present invention will be further explained below in conjunction with the accompanying drawings.

[0042] The radar interference power distribution method for the radar and communication joint system of the present invention comprises the following steps:

[0043] Step 1. Determine the target frequency response, radar signal and communication signal

[0044] Assume that the radar jamming system model is as follows figure 1 shown. In the case of electronic countermeasures of jammers and joint radar and communication systems, based on prior knowledge, acquisition of radar emission signals X r [k], the communication system transmits signal X s [k] and the frequency response H of the target relative to the communication system s [k], and assume that the signal transmitted by the communication system is reflected by the target and reaches the radar receiver, and the echo can be received and processed by the radar;

[0045] Step 2. Determine the radiation parameters ...

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Abstract

The invention discloses a radar interference power allocation method for a radar and communication combination system. The method comprises the steps of firstly, acquiring frequency response of a target to a communication system, a radar signal and a communication transmitting signal according to prior knowledge; then, considering that echo of the communication transmitting signal reflected to a radar receiver by the target can be received and processed by a radar, taking the minimum total transmitting power of an onboard electronic interference system as a goal, establishing a radar interference power allocation model for the radar and communication combination system under the condition that the interference performance is satisfied, and solving the model via a Lagrange multiplier method; selecting interference power allocation J[k] absolute value 2 enabling the total interference power of the system to be minimum under the condition that the interference performance is satisfied as an optimal solution, bringing the optimal interference power allocation J[k] absolute value 2 of the interference system into the allocation model, thus obtaining the minimum total interference power satisfying the constraint condition. The method reduces the total transmitting power of the onboard electronic interference system, and improves the radio frequency stealth performance of the system.

Description

technical field [0001] The invention belongs to the technical field of radar interference power allocation, and in particular relates to a radar interference power allocation method for a combined radar and communication system. Background technique [0002] The development and application of military radar is the focus of the struggle between the enemy and us in the electromagnetic field. It can be said that since the day when radar was used in the military, the radar confrontation around radar has not stopped for a moment, and it has become more and more intense. [0003] With the increasing complexity of the modern radar battlefield environment, anti-radiation missiles have brought serious threats and challenges to the living environment of airborne active radiation systems such as radars and electronic countermeasure systems. By controlling the radiation energy and waveform parameters of the active radiation system, radio frequency stealth technology can significantly r...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/36G01S7/38H04B1/04H04L27/26
Inventor 时晨光汪飞李海林周建江
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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