采用FRFT-OFDM的雷达通信功能共享方法
发布时间：2018-10-31 16:15
【摘要】：针对雷达通信功能共享的波形设计问题,设计一种基于分数阶傅里叶变换的正交频分复用共享信号,并提出一种基于极大似然估计的多散射点雷达信号处理方法.采用脉冲发射方式,脉内调制通信信息,实现数据传输;在雷达一个相干处理周期内,首先对雷达回波序列进行建模,然后利用最大似然估计获得高分辨一维距离像,最后将各脉冲数据按照距离门重排,沿脉冲维进行快速傅里叶变换完成速度估计.仿真结果表明,文中方法能在改善通信误码率性能的情况下,实现多目标的距离速度估计.
[Abstract]:Aiming at the waveform design of radar communication function sharing, an orthogonal frequency division multiplexing shared signal based on fractional Fourier transform is designed, and a multi-scattering point radar signal processing method based on maximum likelihood estimation is proposed. Pulse transmitting mode is used to modulate the communication information in the pulse to realize the data transmission. In a coherent processing period of radar, the radar echo sequence is first modeled, then the high-resolution one-dimensional range profile is obtained by maximum likelihood estimation, and the pulse data is rearranged according to the range gate. Fast Fourier transform (FFT) is used to estimate the velocity along the pulse dimension. The simulation results show that the proposed method can achieve the range velocity estimation of multiple targets under the condition of improving the BER performance.
【作者单位】： 西安电子科技大学雷达信号处理国家重点实验室;
【基金】：国家自然科学基金资助项目(61301285,61301281)
【分类号】：TN957.51
，
本文编号：2302834
[Abstract]:Aiming at the waveform design of radar communication function sharing, an orthogonal frequency division multiplexing shared signal based on fractional Fourier transform is designed, and a multi-scattering point radar signal processing method based on maximum likelihood estimation is proposed. Pulse transmitting mode is used to modulate the communication information in the pulse to realize the data transmission. In a coherent processing period of radar, the radar echo sequence is first modeled, then the high-resolution one-dimensional range profile is obtained by maximum likelihood estimation, and the pulse data is rearranged according to the range gate. Fast Fourier transform (FFT) is used to estimate the velocity along the pulse dimension. The simulation results show that the proposed method can achieve the range velocity estimation of multiple targets under the condition of improving the BER performance.
【作者单位】： 西安电子科技大学雷达信号处理国家重点实验室;
【基金】：国家自然科学基金资助项目(61301285,61301281)
【分类号】：TN957.51
，
本文编号：2302834
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