【摘要】：針對雷達(dá)通信功能共享的波形設(shè)計問題,設(shè)計一種基于分?jǐn)?shù)階傅里葉變換的正交頻分復(fù)用共享信號,并提出一種基于極大似然估計的多散射點雷達(dá)信號處理方法.采用脈沖發(fā)射方式,脈內(nèi)調(diào)制通信信息,實現(xiàn)數(shù)據(jù)傳輸;在雷達(dá)一個相干處理周期內(nèi),首先對雷達(dá)回波序列進(jìn)行建模,然后利用最大似然估計獲得高分辨一維距離像,最后將各脈沖數(shù)據(jù)按照距離門重排,沿脈沖維進(jìn)行快速傅里葉變換完成速度估計.仿真結(jié)果表明,文中方法能在改善通信誤碼率性能的情況下,實現(xiàn)多目標(biāo)的距離速度估計.
[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.
【作者單位】： 西安電子科技大學(xué)雷達(dá)信號處理國家重點實驗室;
【基金】：國家自然科學(xué)基金資助項目(61301285,61301281)
【分類號】：TN957.51
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本文編號：2302834