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A method, system and medium for automatic detection of radar pulse signal spectrum

A signal spectrum and automatic detection technology, applied in the field of communication, can solve the problems of huge hardware resources and high processing speed, and achieve the effect of reducing system resource consumption, reducing pressure, and facilitating subsequent processing.

Active Publication Date: 2021-12-24
湖南艾科诺维科技有限公司
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Problems solved by technology

However, the processing of this scheme is carried out under the high-speed clock. When there are multiple radar signals in the monitoring bandwidth, multiple digital down-converters and digital filters need to be implemented, and the processing speed is high. resources are huge

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  • A method, system and medium for automatic detection of radar pulse signal spectrum
  • A method, system and medium for automatic detection of radar pulse signal spectrum
  • A method, system and medium for automatic detection of radar pulse signal spectrum

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Embodiment Construction

[0052] The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0053] like image 3 As shown, the present invention proposes a kind of radar pulse signal frequency spectrum automatic detection method, comprises the following steps:

[0054] S1) Receive the radio frequency signal and convert it into an intermediate frequency complex signal, and digitally channelize the intermediate frequency complex signal to obtain the signal of each sub-channel;

[0055] Specifically, in this step, the radio frequency signal is subjected to down-conversion to obtain an intermediate frequency signal, and the intermediate frequency signal is input to the ADC for signal acquisition. Most of the ADC acquisition signals are real signals, so the intermediate frequency real signal is output, and then according to the actual sampling frequency, th...

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Abstract

The invention discloses a radar pulse signal spectrum automatic detection method, system and medium. The method includes: performing digital channelization on intermediate frequency complex signals to obtain sub-channel signals; performing adaptive threshold signal detection to obtain sub-channel effective signals; Each pair of adjacent sub-channels is judged to judge the cross-channel situation of adjacent sub-channels; digital channelization is performed for sub-channels without cross-channel conditions, and adaptive threshold signal detection is performed respectively, and the next level The effective signal output of the sub-channel; for the sub-channel with cross-channel situation, calculate the center frequency and bandwidth of the corresponding cross-channel broadband signal, so as to configure the corresponding DDS signal generator and variable bandwidth filter to perform signal matching on the intermediate frequency complex signal with detection. The invention adopts two-stage channelization detection, realizes automatic updating of the noise threshold, and increases the processing of wideband cross-channel signals, so that the bandwidth of the wideband radar signal can be self-adapted for detection.

Description

technical field [0001] The invention relates to the communication field, in particular to an automatic detection method, system and medium of a radar pulse signal spectrum. Background technique [0002] For a long time, the analysis of radar pulse signals has relied on manually setting a fixed noise threshold for environmental noise estimation. The signal received by the receiver is usually a non-cooperative signal, lacking prior information, resulting in a certain blindness in the uniform digital channel division. There is a signal cross-channel problem when radar signals with unknown parameters such as , frequency, etc. The traditional radar pulse signal detection needs to process a large number of signals as a whole, the calculation is complex, the real-time performance is poor, and the hardware resource consumption is also large. [0003] In radar reconnaissance, there are currently two main detection technology solutions: [0004] The first is a spectrum detection sche...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/285
CPCG01S7/285
Inventor 邓海平童智勇王萌
Owner 湖南艾科诺维科技有限公司
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