特殊用法acoustic fix ranging1.声定位fine ranging1.精密测距flash ranging1.频闪测距, 光测距high-burst ranging1.【军】空炸射击修正laser ranging1.激光测距omnidirectional ranging1.【航空】全向测距optical ranging1.光学测距optical automatic ranging1.光学自动测距radioacoustic ranging1.电声测距法sidetone ranging1.【信】侧音测距sound ranging1.声波测距, 音响 测距