A Rapid Recovery Method of Radar Signal Based on Multi-Pulse Combination Detection
A radar signal and rapid recovery technology, applied in the radar field, can solve the problems of reducing the calculation load of recovery processing, unfavorable real-time implementation, and large calculation load, so as to achieve the effect of fast recovery and convenient real-time signal processing
Active Publication Date: 2020-01-31
INST OF ELECTRONICS CHINESE ACAD OF SCI
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[0010] Although the signal recovery process of the invention uses fast convolution operation in the frequency domain, the amount of calculation is still very large, which is not conducive to real-time implementation. Therefore, it is necessary to improve the continuous pulse radar system. While utilizing the advantages of the continuous pulse radar system, To reduce the calculation amount of recovery processing, there is a demand for a rapid radar signal recovery method
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[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0037] An embodiment of the present invention provides a radar signal rapid recovery method for multi-pulse combined detection, including:
[0038] For multi-pulse combination coding, the multi-pulse combination signal is divided into n groups, each group has m sub-pulses, and each sub-pulse is equal in duration, wherein, m>1, n>1;
[0039] In some embodiments, when there is no pulse transmission, it is a receiving window, and the receiving interval corresponding to the time width of each sub-pulse is regarded as a receiving window.
[0040] Second, build the receiving window;
[0041] In some embodiments, the receiving window of the construction is:
[0042] There are 1 to m-1 receiving windows equal to the sub-pulse w...
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The invention discloses a radar signal rapid recovery method for multi-pulse combination detection, which comprises the following steps of: coding the multi-pulse combination, and dividing the multi-pulse combination signal into n groups, wherein each group of m sub-pulses has equal time width, wherein m is more than 1, and n is more than 1; constructing a receiving window; continuously and circularly transmitting each sub-pulse signal at a set time interval, and receiving a corresponding echo signal through the receiving window in the time interval; decoding the received echo signal, constructing a grouping integer coefficient matrix of the echo signal based on the receiving window, and simplifying the recovery operation from convolution operation to matrix and vector inner product operation only comprising addition and subtraction operation to obtain a recovery signal; normalizing the recovery signal to obtain a target echo signal so as to achieve the recovery of a radar signal. According to the radar signal rapid recovery method for multi-pulse combination detection, the recovery operation is simplified from the convolution operation into the vector operation only comprising theaddition and subtraction operation, so that the rapid recovery of the radar signal is achieved, and the real-time signal processing is convenient to achieve.
Description
technical field [0001] The invention relates to the technical field of radar, in particular to a radar signal rapid recovery method for multi-pulse combined detection. Background technique [0002] Radar is a radio remote sensing detection device that obtains target information by transmitting detection signals and receiving target reflection signals. In the prior art, the working system of radar can be mainly divided into two working modes of pulse and continuous wave. [0003] In the pulse working mode, the radar (also known as "pulse radar") transmits a detection signal in the form of a pulse, and then receives the echo signal of the target. The transmission and reception of the pulse radar are separated in time; in the continuous wave working mode Next, the radar (also known as "continuous wave radar") transmits continuous wave detection signals, and at the same time receives the echo signal of the target, and the continuous wave radar transmits and receives simultaneou...
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IPC IPC(8): G01S7/285G01S7/292
CPCG01S7/285G01S7/2923
Inventor 王岩飞李和平韩松刘畅周长义
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI