Abstract
As an important measure of space detection, lidar has the advantages of high detection accuracy, small volume and low power consumption, and strong anti-electromagnetic interference ability. It has been widely used in airborne and spaceborne platforms to carry out topographical mapping, environmental monitoring, target recognition, rendezvous and docking, etc. Traditional lidar systems have the problems of slow imaging rate and low utilization rate of laser energy when detecting the long-distance small targets. This paper proposes the use of diffractive optics-based laser beam splitting technology to increase the instantaneous field of view. In addition, in order to overcome the contradiction between the scanning field of view and the scanning accuracy of the traditional two-dimensional pendulum mirror, an double optical wedge scanning method is proposed and its scanning pattern is analyzed.
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