Study on the influence of range deception interference on rangefinder

Abstract

Range deception interference on rangefinder is composed of range positive and negative deviation jamming. In this paper, their working principles has been analyzed. And numerous experiments have been conducted to investigate their interference effect on rangefinder. As theoretical analysis and experimental results shows, range positive deviation jamming can accurately control the jamming result. As for range negative deviation jamming, there has a minimum jamming distance related to the jamming laser frequency. The higher the repetition frequency of the jamming laser, the smaller the minimum interference distance related and the larger the effective interference distance range is. And the ranging results under range negative deviation tends to a normal distribution, with the center of the minimum interference distance. No matter which interference mode is chosen, the premise of successful jamming is that the energy of jamming laser is larger than the echo pulse reflected by the target from rangefinder.