Abstract

In order to accurately measure the target position in the short range, this paper presents a measurement method based on the laser and magnetism composite ($L-M$) mechanism. A single-beam pulsed laser is used to measure the target distance dynamically. The magnetic sensor is used to acquire the scanning period signal, and the azimuth information is calculated by the $L-M$ signal. A variable step-size least mean square algorithm with a step memory effect is designed to reduce the interference. The numerical simulation and experimental results show that the method of azimuth measurement has a good measurement accuracy and anti-interference. In addition, this short-range azimuth measurement has a great potential in small moving bodies.

© 2018 Optical Society of America

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