【摘要】：針對(duì)跳頻組網(wǎng)通信中不同信號(hào)間的時(shí)頻分隔特點(diǎn),利用時(shí)頻重心進(jìn)行目標(biāo)方位數(shù)據(jù)關(guān)聯(lián),提出了空時(shí)頻方位關(guān)聯(lián)算法。根據(jù)提取的時(shí)頻特征設(shè)計(jì)空時(shí)頻測向的核函數(shù),實(shí)現(xiàn)了簡化的空時(shí)頻測向算法。根據(jù)時(shí)頻距離設(shè)計(jì)代價(jià)函數(shù),基于匈牙利算法實(shí)現(xiàn)了方位關(guān)聯(lián)結(jié)果的最優(yōu)化二維分配。根據(jù)時(shí)頻距離選擇窗函數(shù)的類型和長度,有效避免了信號(hào)旁瓣泄露對(duì)測向精度的影響,顯著提高了密集目標(biāo)條件下的關(guān)聯(lián)正確概率。數(shù)值仿真驗(yàn)證了上述觀點(diǎn)。
[Abstract]:According to the characteristics of time-frequency separation between different signals in FH network, a space-time-frequency azimuth correlation algorithm is proposed by using time-frequency center of gravity to correlate the target azimuth data. The kernel function of space-time-frequency direction finding is designed according to the extracted time-frequency features, and a simplified space-time-frequency direction finding algorithm is implemented. Based on the cost function of time-frequency distance design, the optimal two-dimensional allocation of azimuth correlation results is realized based on Hungarian algorithm. By selecting the type and length of window function according to time-frequency distance, the influence of sidelobe leakage on direction finding accuracy is effectively avoided, and the correct probability of correlation under dense target condition is improved significantly. The numerical simulation verifies the above viewpoint.
【作者單位】： 國防科技大學(xué)電子科學(xué)與工程學(xué)院;
【基金】：國防重點(diǎn)實(shí)驗(yàn)室基金資助項(xiàng)目(9140C0202011003)
【分類號(hào)】：TN914.41

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本文編號(hào)：2232971