【摘要】：為提高線性調(diào)頻連續(xù)波雷達(dá)的探測精度,提出一種Rife算法與Jacobsen算法的聯(lián)合頻率估計算法。該算法分別對三角波調(diào)制的線性調(diào)頻連續(xù)波的差頻信號的上下掃頻的頻譜進(jìn)行峰值搜索,當(dāng)其頻率在量化頻率點(diǎn)附近時用Jacobsen算法優(yōu)化,其他情況使用Rife算法直接估計。通過理論及Matlab軟件仿真分析算法的估計性能,結(jié)合現(xiàn)場可編程門陣列(FPGA)EP4CE30F23C8N設(shè)計了用于三角波調(diào)制的LFMCW雷達(dá),通過SignalTapⅡ軟件實(shí)時捕捉目標(biāo)參數(shù),得到速度及距離信息。該方法應(yīng)用于調(diào)頻連續(xù)波雷達(dá)可以取得較高探測精度,同時具有較高的實(shí)時性、穩(wěn)定性。
[Abstract]:In order to improve the detection accuracy of LFM CW radar, a joint frequency estimation algorithm of Rife algorithm and Jacobsen algorithm is proposed. The algorithm searches the peak value of the frequency spectrum of the difference frequency signal of the linear frequency modulation continuous wave modulated by triangle wave. When the frequency is near the quantized frequency point, the Jacobsen algorithm is used to optimize the frequency. In other cases, the Rife algorithm is used to estimate the frequency spectrum directly. Based on the theory and the simulation analysis of the estimation performance of the algorithm by Matlab software, a LFMCW radar for triangular wave modulation is designed in combination with the field programmable gate array (FPGA) EP4CE30F23C8N). The target parameters are captured in real time by SignalTap 鈪，

本文編號：2269278