As a device of dealing with target scattered light imaging,Lidar has great advantages in detection accuracy,but the resolution is limited by the beamwidth and target distance.So it is combined with synthetic aperture technology to obtain synthetic aperture Lidar(SAL),which has become a research hotspot at home and abroad.As an active detec⁃tion radar,SAL has a shorter synthetic aperture time,and the imaging resolution is independent of distance,and can im⁃age a large area.In addition,SAL also has the characteristics of small size,light weight,and strong anti-interference,so it is difficult to detect,and has good military and civilian potential.However,due to the short wavelength of the laser,it will inevitably cause problems such as phase error and modulation limitation,so this paper mainly summarizes the re⁃search and development of SAL in the past ten years from three aspects:phase error processing,optical field optimization and ISAL,and analyzes the principles,problems and bottlenecks of different methods,and finally makes a reasonable prospect according to their development trends.
关键词
激光雷达/合成孔径技术/相位误差补偿/光视场/逆合成孔径激光雷达
Key words
Lidar/synthetic aperture technology/phase error compensation/optical field of view/inverse synthetic ap⁃erture Lidar
维普
万方数据