Parameter agile radar signal sorting method based on sequence fragment mining

A radar signal sorting and sequence segment technology, which is applied to radio wave measurement systems, instruments, etc., can solve problems such as inability to obtain sorting results, failure to pass thresholds, and difficult parameter values

Inactive Publication Date: 2018-11-30
THE 724TH RES INST OF CHINA SHIPBUILDING IND
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  • Summary
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Problems solved by technology

The large range of parameter changes causes the received pulse to be diluted and drowned in other electromagnetic signals, making it difficult to determine the parameter value through the method of histogram statistics
Second, the repetition cycle is changeable
The above three characteristics lead to the fact that in the histogram statistics, the real repetition period value cannot be clearly highlighted, cannot pass the threshold, and cannot obtain accurate sorting results

Method used

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  • Parameter agile radar signal sorting method based on sequence fragment mining
  • Parameter agile radar signal sorting method based on sequence fragment mining
  • Parameter agile radar signal sorting method based on sequence fragment mining

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Embodiment Construction

[0010] The process flow of the parameter-agile radar signal sorting method based on pulse segment mining is as follows: figure 1 shown. The signal processing extension generates PDW (Pulse Describe Word) and sends it to the data processing extension. The digital processing extension first clusters the PDW, then mines the sequence fragments, and converts the PDW information into pulse fragment information. The screening of pulse segments is completed by comparing with the information in the radar agility parameter database. For the filtered pulse segments, use certain judgment criteria to determine whether a radar radiation source exists. If it exists, calculate the radiation source parameters and generate EDW information to send to the display control extension.

[0011] Clustering is generally performed in the three dimensions of frequency, pulse width, and azimuth of PDW, with the purpose of maximizing the time-domain deinterleaving of signals from different radiation sourc...

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Abstract

The invention relates to a parameter agile radar signal sorting method based on sequence fragment mining. The parameter agile radar signal sorting method comprises the steps that a digital processingextension set firstly performs clustering processing on PDW, then performs mining of sequence fragments and transforms PDW information into pulse fragment information. The pulse fragment screening iscompleted by comparing with the information in a radar agile parameter database, for the screened pulse fragment, certain criteria are used for determining whether a radar radiation source exists or not, and if yes, radiation source parameters are calculated to generate EDW information.

Description

technical field [0001] The invention relates to a method for sorting parameter-agile radar signals in a radar reconnaissance system. Background technique [0002] Phased array radar, active electronically scanned array radar or passive electronically scanned array radar, is a type of radar that changes the beam scanning direction by changing the synthesis method of beams emitted by the antenna surface array. As a three-coordinate radar, phased array radar has the advantages of flexible beam pointing, large target capacity, strong adaptability, good anti-interference performance, and can complete multiple tasks at the same time. Because of these advantages, various types of newly developed shipboard and airborne radars are increasingly adopting the phased array system. [0003] The radar signal reconnaissance system is a device that uses passive reception and signal processing technology to detect and identify the radar radiation source signal environment, measure and analyz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/02
CPCG01S7/021
Inventor 田田朱润匡华星
Owner THE 724TH RES INST OF CHINA SHIPBUILDING IND
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