Some techniques about adaptive line enhancer ( ale ) are introduced in this thesis , which are used in active sonar to improve its detection performance 本論文著重對自適應(yīng)線譜增強器( ale )應(yīng)用于主動聲納信號檢測的問題進(jìn)行研究,以期改善主動聲納的檢測性能。
Based on advantages of sign algorithm and coherent integrator algorithm , a fast algorithm of foc sign coherent integrator based adaptive line enhancer is presented . this algorithm has better tracing feature , steady output , and low complexity 該算法充分利用了極性迭代算法與相干累積算法的優(yōu)點,具有收斂速度快、系統(tǒng)穩(wěn)定等西北了業(yè)人學(xué)博i :學(xué)位論義特點。
The convergences of these algorithms are proved in theory . their output signal - to - noise ( snr ) is derived and bigger than that of the traditional adaptive line enhancer ( ale ) . simulation with the torpedo - radiated data indicates that the proposed algorithms are much better than the ale and the short - time correlation based adaptive line enhancer ( scbale ) in suppressing gaussian noise and enhancing spectrum feature 對該算法的收斂性能進(jìn)行了嚴(yán)格的證明,推導(dǎo)了該算法輸出信噪比的計算公式,證明了該信噪比總是大于基于lms的自適應(yīng)線譜增強器的輸出信噪比,定義了評價算法性能的若干參數(shù)。