Integrated OFDM radar communication waveform design method based on frequency domain zero setting modulation

A waveform design and zero-setting technology, which is applied in the modulation carrier system, multi-frequency code system, radio wave measurement system, etc., can solve problems such as spectrum compatibility or interference, and achieve the effect of communication data transmission optimization

Active Publication Date: 2017-12-19
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0004] Aiming at the existing waveform design of OFDM radar communication integration, the present invention realizes certain radar communication performance by designing some parameters, without considering the technical problems of spectrum compatibility or interference, and discloses an OFDM radar based on frequency domain zeroing modulation Communication Integrated Waveform Design Method

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  • Integrated OFDM radar communication waveform design method based on frequency domain zero setting modulation
  • Integrated OFDM radar communication waveform design method based on frequency domain zero setting modulation
  • Integrated OFDM radar communication waveform design method based on frequency domain zero setting modulation

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[0037] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the implementation methods and accompanying drawings.

[0038] The present invention mainly adopts the method of computer simulation for verification, and all steps and conclusions are verified correctly on MATLAB-R2014a.

[0039] see Figure 1-a , the specific implementation steps of using the signal generator to generate the required signal are as follows:

[0040] Step 1. Initialize system parameters:

[0041] The initialization system parameters include: OFDM signal bandwidth B=100MHZ, time width T=2.075μs, number of subcarriers N=256, subcarrier frequency interval Δf=B / N, number of sampling points K=N=256, sampling rate f s=N / T, the spectrum compatible frequency band is set to [209Δf, 229Δf], the frequency spectrum is set to zero frequency (Ω i , i=1,2,...16) the total is 16, the num...

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Abstract

The invention discloses an integrated OFDM radar communication waveform design method based on frequency domain zero setting modulation. A frequency domain zero setting multi-waveform optimization design method is utilized to realize communication data transmission, and radar performance of signals is further optimized. For a radar emission portion, in combination with a signal autocorrelation peak value sidelobe level and an envelope fluctuating factor in radar waveform design, a subcarrier reservation method is applied to design and construct a convex optimization problem, an SDP method based on randomization is further employed to solve a problem; for a radar reception portion, the autocorrelation characteristic of a filtering verification signal is matched, certain signal processing is further carried out; for a communication reception portion, a method based on minimum sub-band energy is employed to demodulate the signal, and demodulation binary communication data is lastly generated. The method is advantaged in that not only can the signal frequency spectrum compatibility characteristic be considered, but also a multi-waveform optimization design problem is further utilized to realize communication data transmission and waveform radar characteristic optimization.

Description

technical field [0001] The invention belongs to the field of radar communication integrated waveform design, in particular to an OFDM (orthogonal frequency division multiplexing) radar communication integrated waveform design method based on frequency domain zero-set modulation. Background technique [0002] With the development of information technology, the electromagnetic environment is becoming increasingly complex, and various electronic equipment brings different interference to combat platforms, and these electronic equipment are necessary. Radar is used to detect targets, and communication systems are used to transmit information. Combat equipment used to interfere with the enemy. For a long time, radar equipment and communication equipment have been studied separately due to their different functions and different signal processing methods, especially before digital signal processing was widely used. Comparing the radar system and the communication system, we found...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/28H04L27/26H04L5/00
CPCG01S7/023G01S7/28H04L5/0044H04L27/2602
Inventor 崔国龙李雯李固冲李洋漾杨靖孔令讲
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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