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A Radar Signal Transmission Method Against Radio Frequency Store-and-Forward Interference

A technology of forwarding interference and radio frequency storage, applied in radio wave measurement systems, instruments, etc., can solve the problems of inability to achieve effective target detection, inability to identify true and false targets, etc., to increase the difficulty of accurate identification and interference, and reduce adverse effects. Effect

Active Publication Date: 2018-04-03
HOHAI UNIV
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Problems solved by technology

In this method, once the jammer performs digital radio frequency store-and-forward on the cover pulse of the radar, the jamming will be completely ineffective; but if the jammer discards the short spoofing pulse signal and performs digital radio frequency store-and-forward on the valid radar pulse signal, the radar will not be able to identify it True and false targets, so that the effective detection of targets cannot be achieved

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  • A Radar Signal Transmission Method Against Radio Frequency Store-and-Forward Interference
  • A Radar Signal Transmission Method Against Radio Frequency Store-and-Forward Interference
  • A Radar Signal Transmission Method Against Radio Frequency Store-and-Forward Interference

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Such as figure 1 As shown, a radar signal transmitting method against radio frequency store-and-forward interference includes the following steps:

[0031] Step 1: The radar normally generates and transmits broadband radar signals according to the distance of the target to be detected;

[0032] Step 2: Perform partial spectrum rendering design on the generated broadband radar signal, and generate a broadband radar signal with partial spectrum rendering;

[0033] Step 3: After the radar receives the echo signal, first analyze the frequency spectrum of the radar echo signal, find the frequency band that the radar renders the spectrum in advance, and judge whether the radar is interfered by the RF store-and-forward of the jammer according to the characteristics of this frequency spectrum ;

[0034] Step 4: According to the spectral analysis results of the render...

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Abstract

The invention discloses a radar signal emission method for resisting radio frequency storage forwarding interference, which utilizes the digit radio frequency storage forwarding work principle and combines with the bandwidth advantage of the radar broadband signal work. The radar emits the broadband signal, which covers a plurality of digital channelization investigation channels of a jammer, increases the accuracy recognition and jamming difficulty of the jammer on the radar signal through actively optimizing the signal waveform in the broadband, causes the fact that the jammer only interferes parts of the frequency part and reduces the adverse affect brought by the jammer. The radar on a reception terminal firstly performs spectral analysis on the received radar echo to determine whether the radar receives the radio frequency storage forwarding interference, if the radar is found to be interfered, the removal of the interference frequency band can be performed during the pulse pressure, and the signal of the rest part which is not interfered is utilized to perform the object detection.

Description

technical field [0001] The invention relates to a radar signal transmitting method against radio frequency store-and-forward interference, which belongs to the technical field of radar anti-jamming. Background technique [0002] Modern radar has become the most widely used and most important equipment in the field of information acquisition and precision guidance. Its role in timely, accurate and comprehensive acquisition of target information in a vast combat area is irreplaceable. However, radar is facing an increasingly complex electromagnetic environment, and various interferences bring serious challenges to radar's normal function of detecting targets. [0003] Currently, radars face interference from digital radio frequency store-and-forward (DRFM), which is used to store and forward radio frequency signals. The digital radio frequency memory realizes the high speed of radar signal capture and storage, the diversity of interference technology and the flexibility of co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/282G01S7/36
CPCG01S7/282G01S7/36
Inventor 麻清华蒋德富
Owner HOHAI UNIV
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