国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

As an important part of the new generation range measurement system, acoustic measurement plays an important role in realizing the targets’ trajectory under all-weather and all-terrain phenomenon. Existing shooting range measurement systems usually includes light and radar, which are interfered by the natural light and complex electromagnetic environments, respectively. Thus, the previous range measurement systems hard to achieve trajectory measurements in inclement weather. The acoustic trajectory measurement method proposed in this paper has a measurement accuracy of better than 10m for supersonic targets and better than 10m for high subsonic targets. The emergence of acoustic measurement has made up for the vacancy in the observation methods, and greatly enriched the observation latitude of the shooting range.