Influencing Factors of Pulse Baseline Positioning Performance in Near Field

The equations of ranging and direction finding at the arrival time of leading pulse are deduced for pulse base-line positioning. The influences of the parameters of CW pulse, array, and sound source incident position on the per-formance of pulse baseline positioning are discussed. Simulation results show that the pulse baseline positioning can achieve better performance in the case of lower radiation frequency, larger array aperture, and the very source inci-dence against the array direction. Array number has little influence on the positioning performance, and with an increase in the range between sound source and array, the directional performance keeps stable, but the ranging performance decreases continuously.