An on-vehicle multiple-beam optical
phased array laser three-dimensional imaging
radar system relates to the technical field of
radar engineering and settles problems of short-distance
object detection and low imaging frame frequency in an existing
laser three-dimensional imaging
system. The on-vehicle multiple-beam optical
phased array laser three-dimensional imaging
radar system comprises a multi-
beam laser module, a transmitting module, a receiving module, a central processor and a distance measuring unit. The multi-
beam laser module comprises a
beam splitter, a phase modulator array, a
fiber amplifier array and a collimating beam spreading array. The transmitting module comprises a unidirectional glass array and an optical
phased array. The receiving module comprises an optical filterarray, a double-bonding-
lens array, a surface array APD array, a
quenching circuit and a distance measuring unit. A ground objective area is scanned through multiple
laser beams, thereby obtaining corresponding
point cloud data. The obtained data are processed, thereby realizing objective three-dimensional image reconstruction with advantages of high frame frequency,
high resolution and large visual field. A detecting task to a ground object is finished in real time in high speed. The on-vehicle multiple-beam optical phased array laser three-dimensional imaging radar system has advantages of high measurement speed and high
measurement precision.