Coherent transferring type jamming inhibition method for airborne radar

An airborne radar and interference suppression technology, applied to radio wave measurement systems, instruments, etc., can solve the problems of reduced number of training samples, poor convergence performance of STAP algorithm, increased complexity of track correlation, etc., and achieve the effect of reducing the burden

Inactive Publication Date: 2015-04-22
XIDIAN UNIV
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Problems solved by technology

The sample elimination method is to detect and eliminate the distance units containing the repeating interference in the echo samples through the non-uniform detector, but when the number of the repeating interference is large, this method will eliminate a large number of distance units, so that the The reduction in the number of training samples leads to poor convergence performance of the STAP algorithm
The point track recognition method is to distinguish the real target from the forward interference through the track map obtained from the radar multi-circle scanning data, but this method greatly increases the complexity of track correlation during data processing

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  • Coherent transferring type jamming inhibition method for airborne radar
  • Coherent transferring type jamming inhibition method for airborne radar
  • Coherent transferring type jamming inhibition method for airborne radar

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with accompanying drawing:

[0028] refer to figure 1 , is a flow chart of an airborne radar coherent forwarding interference suppression method of the present invention. The model establishment and solution process of the present invention will be described below.

[0029] When there is a jammer in the observation scene of the airborne radar, after the jammer intercepts and forwards the radar transmission signal, the signal received by the airborne radar for

[0030] x ~ = x t + x c + x n + x j

[0031] where x t is the target component, x c is the clutter component, x n is the noise component, x j is the forward interference component. where the target component x t Expres...

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Abstract

The invention belongs to the technical field of coherent transferring type jamming inhibition techniques, and in particular relates to a coherent transferring type jamming inhibition method for airborne radar. The coherent transferring type jamming inhibition method specifically comprises the following steps: firstly, detecting and estimating the parameters of transferring type jamming through high repetition frequency pulse strings emitted from the radar, and optimizing a transmitting direction graph by using the estimated jamming parameters, thereby forming zero trap in a jamming reconnaissance direction, reducing the probability that a transmitting signal is intercepted, and achieving the purpose of reducing the interception rate in the direction of a jammer. Due to the active confrontation on the transferring type jamming, the burden of a receiving end in signal processing is effectively alleviated. Therefore, a self-adaptation transmitting method based on jamming inhibition has significant practical meanings.

Description

technical field [0001] The invention belongs to the technical field of coherent forwarding interference suppression, and particularly relates to a coherent forwarding interference suppression method for airborne radar. The present invention aims at the characteristic that a jammer needs to intercept radar transmission signals to transmit forwarding interference to radar, and optimizes the transmission direction As shown in the figure, a zero trap is formed in the interference reconnaissance direction, which reduces the probability of the transmitted signal being intercepted, and can effectively reduce the possibility of the radar being interfered. Background technique [0002] The visual range of airborne radar is larger than that of ground radar, and it plays an important role in long-range air early warning. When it looks down, due to the influence of ground clutter, the target detection performance of the radar decreases. Space time adaptive processing (STAP) utilizes th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/36
CPCG01S7/36
Inventor 王彤李冬杨姜磊
Owner XIDIAN UNIV
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