Based on classification of poison gas,definition of leakage parameters and calculation of leakage probability and combined with vulnerability matrix the most possible leakage spots are determined.

The STAP detector based on maximum SINR is proposed in this paper,Via setting the hypothesis test reasonable,deduces the statistic characteristic,and the relationship between detection threshold and false-alarm probability and detection probability.

This paper proposes the STAP detector based on likelihood ratio rule,through the signal model and the likelihood ratio test,deduces the statistic characteristic,and the relationship between detection threshold and false-alarm probability and detection probability.

Figures of false-alarm probability versus E_c/N_o and figures of detection-probability versus E_c/N_o on AWGN condition are presented.

In order to get lower false alarm probability and higher detection probability, the genetic algorithm (GA) is applied to solve this multipurpose optimal problem which has three parameters: the numbers of C/A code periods and navigation data bits which are used for integral, and the acquisition threshold.

Thus,the closed-form expression of the detection probability and false alarm probability of the system can be derived under some interf.

Under condition of meteorological clutter,how to exploit the outline clutter map and the dynamic clutter map to reduce the false alarm probability and improve detection performance of radar is discussed,and processing the border problem of meteorological clutter is analyzed,finally the complete clutter map is realized by using FPGA.