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Airborne radar radio frequency stealth waveform selection method based on waveform library

An airborne radar and radio frequency stealth technology, which is applied in the direction of radio wave reflection/re-radiation, use of re-radiation, radio wave measurement system, etc., to achieve the effect of improving radio frequency stealth performance, improving target tracking accuracy, and controlling the number of startups

Inactive Publication Date: 2020-06-23
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] However, in the prior art, there is no waveform library-based radio frequency stealth waveform selection method for airborne radar

Method used

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  • Airborne radar radio frequency stealth waveform selection method based on waveform library
  • Airborne radar radio frequency stealth waveform selection method based on waveform library
  • Airborne radar radio frequency stealth waveform selection method based on waveform library

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Embodiment Construction

[0039] The structure and working process of the present invention will be further described below in conjunction with the accompanying drawings.

[0040] Starting from practical engineering applications, the present invention proposes a waveform library-based radio frequency stealth waveform selection method for airborne radar. First, the airborne radar transmission waveform library is established. Then, considering the combat scenario where the airborne radar uses the interactive multi-model extended Kalman filter algorithm to track a single target, according to the calculated trace of the predicted target covariance matrix at the next moment and the preset target tracking error threshold, the following Whether or not the airborne radar is turned on to track the target at a moment. If the preset target tracking error threshold is met, the airborne radar will not be turned on at the next moment, and the passive sensor will track the target; if the preset target tracking error ...

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Abstract

The invention discloses an airborne radar radio frequency stealth waveform selection method based on a waveform library. The method comprises the following steps: establishing an airborne radar emission waveform library; calculating a prediction target covariance matrix at the next moment; judging whether the airborne radar is started to irradiate and track the target or not at the next moment; defining an airborne radar waveform selection target function; establishing an airborne radar waveform selection model based on a waveform library; and solving the airborne radar waveform selection model based on the waveform library. According to the method, the target tracking precision of the airborne radar is improved, the starting frequency of the airborne radar is effectively controlled, and therefore the radio frequency stealth performance of the airborne radar is improved.

Description

technical field [0001] The invention relates to radar signal processing technology, in particular to an airborne radar radio frequency stealth waveform selection method based on a waveform library. Background technique [0002] Traditional airborne radar emits a fixed waveform to track the target, but the radar's measurement of the target depends on the emitted waveform. Due to the unmeasurability of the radar combat environment, it is often difficult to achieve ideal tracking accuracy by using a single emission waveform to track the target. [0003] Radio frequency stealth radar is also called low probability of interception radar, which means that radar designers strive to find a "concealed" or "quiet" radar working method, so that the radar will not be intercepted by passive interception receivers during operation, thus To achieve the goal that the radar will not be interfered or destroyed, and improve the survivability of the radar. [0004] However, there is no method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/72G01S7/282G01S7/35G01S7/36
CPCG01S13/72G01S7/282G01S7/35G01S7/36
Inventor 时晨光王奕杰丁琳涛
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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