Application Research of the Page Test in Active Sonar Detection

A feedback mechanism of the Page test is proposed in this paper. From the aspects of SNR estimation on square output of the matched filter, normalization, and the gate calculation, the information feedback flow is discussed. A new one-threshold Page test and processing flow that can effectively distinguish between target and interferences by cumulating change process adequately are also proposed. The performance of advanced Page test with feedback mechanism is improved evidently, especially to those signals with low target SNR and lower frequency. Data from the experiments on the sea proved the Page test behave well in actual oceanic conditions.