论文标题
多径传播的强直接爆炸中，基于GLRT的基于GLRT的检测
GLRT-based Detection in Bistatic Sonar under Strong Direct Blast with Multipath Propagation
论文作者
论文摘要
直接爆炸是对bist骨声纳的强烈干扰，并且由于爆炸和信号的多径传播而难以抑制。在本研究中提出了收到信号频域中基于广义的似然比检测方案（GLRT），并且使用最大似然估计以及多态环境中的加权傅立叶变换和松弛来估算未知参数。理论上给出了已知和未知噪声功率检测器检测器的测试统计量的分布，并确定了检测概率。通过最大似然估计评估噪声功率时，检测器的性能降低了4 dB。模拟显示了在向前散射检测构型下具有低信噪比的爆炸比下的检测器的有效性。讨论了许多因素的敏感性，并实现了鲁棒性。
Direct blast is a strong interference in bistatic sonar and difficult to suppress due to multipath propagation for blasts and signals. A generalized likelihood ratio test (GLRT) based detection scheme in the frequency domain of the received signals is proposed in this study, and the unknown parameters are estimated using Maximum Likelihood Estimates and Weighted Fourier Transform and Relaxation in a multipath environment. The distributions of the test statistic of detectors for known and unknown noise power are given in theory, and the detection probability is determined. The performance of the detector decreases by 4 dB when the noise power is evaluated with maximum likelihood estimates. Simulations show the effectiveness of the detector under a forward scattering detection configuration with a low signal-to-direct blast ratio. The sensitivity of many factors is discussed, and robustness is achieved.
