In order to evaluate the results of this system in practical application, a mathematical method based on Monte Carlo analysis was put forward, which includes two parts, as echo simulation and detection probability calculation.

According to the requirement of high frequency ground wave radar s test and the extraction reference of target information in HF ground wave radar, a responder is designed to complete the tasks of radar scaling, multichannel receiver calibration, echo simulation, and target management combining with the secondary radar s work principle.

In order to evaluate the results of this system in practical application, a mathematical method based on Monte Carlo analysis was put forward, which includes two parts, as echo simulation and detection probability calculation.

According to Doppler theory, simulated echo signal comprise the corresponding Doppler Spectrum, then ocean current velocity can be simulated.

Based on the theoretical framework of the leakage and spread of such poisonous and harmful substances as glycol and acraldehyde,this paper advances the graphic simulation of GIS of poisonous and harmful substances.

This paper presents an approach of waveform simulation for combinational circuit based on Boolean process, and introduces its theoretical bases, used techniques, major algorithms, verifications by SPICE and results of experiments.

In our software package, the imitative wave is constituted of an attenuating direct current element, a basic wave and harmonic waves, by which the real time power system is simulated and comprehensive tests of user s algorithms are performed.