Some of the precedent technologies can be used to measure distanceThe optical and acoustic sensors for instance can provide distance information thanks to the computation of the time of flight𝑑 =𝑐𝑡

𝜃 the angle between the sensor's axis and the target

Other technologies that can be used to measure distance include radar, lidar, and sonar. Radar uses radio waves to detect objects and determine their distance, while lidar uses laser light and sonar uses sound waves. All of these technologies rely on the same basic principle of measuring the time it takes for a signal to travel from the sensor to the target and back again. By calculating this time, the distance between the sensor and the target can be determined. These technologies are used in a wide range of applications, from measuring the distance to a nearby object to mapping the topography of the ocean floor