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A Performance Evaluation Method for Radar with Low Probability of Interception Based on Waveform Complexity Factor

A technology of complexity factor and complexity, applied in the field of information, can solve the problems of not considering the adaptability factor of ESM receiver, and the extraction of waveform features is not comprehensive enough.

Active Publication Date: 2019-02-19
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

The document published by the proponent of the present invention [discussion on the performance evaluation method of stealth radar LPI, Journal of Northwestern Polytechnical University, 2015 No. 2, pages 284-289] proposed the effectiveness evaluation standard and evaluation framework of stealth radar LPI performance, and proposed the use of The interception factor and waveform complexity factor are used to estimate the anti-detection and anti-identification capabilities of radar waveforms, but the model framework is not comprehensive enough to extract waveform features, and does not consider the adaptability of different waveforms to specific ESM receivers

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  • A Performance Evaluation Method for Radar with Low Probability of Interception Based on Waveform Complexity Factor
  • A Performance Evaluation Method for Radar with Low Probability of Interception Based on Waveform Complexity Factor
  • A Performance Evaluation Method for Radar with Low Probability of Interception Based on Waveform Complexity Factor

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Embodiment Construction

[0039] Embodiments of the present invention are described in detail below, and the embodiments are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0040] Refer to attached figure 1 , the radar low intercept probability performance evaluation method based on waveform complexity factor that the present invention proposes, comprises the following steps:

[0041] Step 1: Build a waveform complexity model:

[0042] Step 1.1: Define the waveform complexity Complexity:

[0043] The waveform complexity Complexity is expressed by the following formula:

[0044] Complexity=w pw σ pw +w RF σ RF +w Fn σ Fn +w PRI抖动 σ PRI抖动 +w 脉内 σ 脉内 +w PRI参差 σ PRI参差 +w fc σ fc +w φ φ(T 2 / T 1 )+w ψ ψ(S 1 / S 2 )

[0045] where: σ pw is the relative variance of the pulse width measurement, w pw for σ pw weight; σ RF is the relative frequency bandwidth of the signal obtained by ESM frequency measurement, w ...

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Abstract

The invention provides a radar Low-Probability-of-Interception (LPI) performance assessment method based on a waveform complexity factor, builds a multidimensional variable related with radar waveform time domain and frequency domain parameters and a specific ESM receiver and a sorting identification model thereof, i.e., a waveform complexity factor, and determines distribution weights of different factors and measures to radar LPI performance through an analytic hierarchy process, thereby obtaining quantitative evaluation results of LPI performance of different radar waveforms. The radar LPI performance assessment method based on the waveform complexity factor can be used for calibrating and measuring the difficulty level of sorting of different waveforms after interception by the ESM receiver, can be used for evaluating adaptability of different waveforms to the specific ESM receiver, can provide reference for LPI waveform designers, can effectively grasp an anti-sorting capability of LPI waveforms, and provides reference for realizing the LPI characteristic of a radar.

Description

technical field [0001] The invention belongs to radar electronic countermeasure technology and relates to the field of information technology. [0002] Based on the actual situation of modern electronic warfare, the present invention proposes a radar low probability of intercept (LPI) performance evaluation method based on waveform complexity factor. According to the currently used ESM sorting recognition model, the method proposes to compare Several groups of sensitive parameters are used to construct the complexity factor, which is mainly used to measure the difficulty of sorting different waveforms after being intercepted by the ESM receiver, and can be used to evaluate the adaptability of different waveforms to a specific ESM receiver. Background technique [0003] The LPI technology of the radar is not an isolated concept, it fully embodies the system, and is related to the design parameters of the radar, the design parameters of the platform reconnaissance receiver and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/40
CPCG01S7/40
Inventor 羊彦彭元坤侯静高田景占荣
Owner NORTHWESTERN POLYTECHNICAL UNIV
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