An adaptive method to improve the performance of laser warning equipment

The laser warning is the important precondition and basic measure in laser countermeasure. The first technical problem for the laser warning is how to recognize a targeting laser signal from complex background noise and accurately raise the alarm. The relationship between detection probability of laser warning equipment and signaltonoise ratio is analyzed. It can be seen form the relational expression that, the increase of the signaltonoise ratio of laser signal is a precondition for improving the detection probability. In order to ensure the optimization of the system signaltonoise ratio, an adaptive method was proposed to ensure maximum signaltonoise ratio. The algorithm analysis was carried out and the algorithm simplification was made with the matrix transformation. Finally, a simple iterative algorithm suitable for the optimum weight vector solution is given.