Infrared and Laser Engineering, Volume. 54, Issue 8, 20250134(2025)

Research on focal plane arrays lidar simulation and point cloud matching in space station docking scenarios

Xinyang HU1,2, Ming LI1、*, Yingjie MA1, Hongbin LIU1, Jiayi SHEN1, Fengxiang WANG1, Genghua HUANG1, and Rong SHU1,2
Author Affiliations
  • 1Key Laboratory of Space Optoelectronic Technology, Shanghai Institute of Technical Physics, Chinese Academy of Sciences,Shanghai 200083, China
  • 2School of Information Science and Technology, ShanghaiTech University, Shanghai 201210, China
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    Figures & Tables(17)
    (a)-(b) Lidar surface array detector modules; (c) Laser transmitter module
    (a) Laser transmitter array; (b) Partial view of laser beam expansion 64×64 lattice beam
    Simulation point cloud generation analysis flowchart
    Tianghe core module model diagram
    (a)-(f) Simulated point clouds of targets detected at different angles and distances
    (a) Simulated point cloud at 500 m detection distance; (b) Simulated point cloud at 300 m detection distance
    (a) Local error curves for optimal parameter range; (b) Global error curves for optimal parameter range
    (a)-(d) Randomly selected four sets of point cloud matching data visualisation results
    Schematic of lidar's spatial relationship with the target and beam direction
    (a) Mean square error versus field of view; (b) Point-to-point standard deviation versus field of view matching error with field of view angle curve
    (a) 256 × 256 surface array scale radar at 1400 m matching visualisation results; (b) 128 × 128 surface array scale radar at 1400 m simulated point cloud and reference point cloud matching visualisation results
    (a) Point cloud matching error curves for radar systems of two scales with detection ranges of 100-1000 m; (b) Point cloud matching error curves for radar systems of two scales with detection ranges of 1100-1600 m
    • Table 1. System parameters of the lidar desktop verification device

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      Table 1. System parameters of the lidar desktop verification device

      ParameterValue
      Wavelength/nm1064
      Working distance/m>1000
      Detector size64×64
      Detector efficiency20%
      Laser emission field of view/μrad400
      Unit reception field of view/μrad100
      System field of view/(°)1.44
      Laser beam divergence angle/μrad100
      Laser repetition frequency/Hz1000
      Laser pulse width/ns1.0
      Emission optical system efficiency90%
      Total reception system efficiency40%
    • Table 2. Simulation model parameter input

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      Table 2. Simulation model parameter input

      ParameterDescriptionValue
      Field of view/(°)Horizontal & vertical FOV1.44
      PixelsNumber of detector pixels64×64
      Position/mT_true[x,y,z≥0]
      Rotation angles/(°)Roll, Pitch, Yaw$ [\varphi ,\theta ,\psi ] $
      Noise count rate/cpsNumber of noise events per second1.1×106
      Random error value/mradPoint coordinate offset error≤0.3
    • Table 3. Experimental results of the accuracy and efficiency of the algorithm

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      Table 3. Experimental results of the accuracy and efficiency of the algorithm

      IndicatorsRSICPFGRGraphSCNetGeoTransformerOurs
      Data1MSE/m20.1970.3610.1330.1200.139
      P2PSD/m0.0270.0350.0150.0100.018
      Time/ms28095280150146
      Iterations4822551527
      Data2MSE/m20.2510.5020.2050.3860.227
      P2PSD/m0.0220.0480.0120.2090.016
      Time/ms312146397120188
      Iterations4626651533
      Data3MSE/m20.5330.6210.4010.3200.456
      P2PSD/m0.1720.0420.1980.1440.033
      Time/ms456198520250231
      Iterations6533724538
      Data4MSE/m20.7301.8730.7210.9850.811
      P2PSD/m0.2231.0120.2100.2530.228
      Time/ms49818055072194
      Iterations762485828
      Data5MSE/m20.2520.7610.2120.1810.222
      P2PSD/m0.3081.1530.1670.1440.194
      Time/ms42017637863186
      Iterations7526581232
    • Table 4. Ablation experiment methods

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      Table 4. Ablation experiment methods

      MethodωillumGaussian kernel
      A
      B
      C0.5
      D1.0
      E2.0
      F0.5
      G1.0
      H2.0
    • Table 5. Ablation experiment results

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      Table 5. Ablation experiment results

      MethodMSE/m2P2PSD/mRuntime/msIterations
      A0.4300.04929558
      B0.2250.03228547
      C0.2740.03027241
      D0.1740.02124537
      E0.1780.02725343
      F0.1530.02225539
      G0.1440.01824637
      H0.1960.02524842
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    Xinyang HU, Ming LI, Yingjie MA, Hongbin LIU, Jiayi SHEN, Fengxiang WANG, Genghua HUANG, Rong SHU. Research on focal plane arrays lidar simulation and point cloud matching in space station docking scenarios[J]. Infrared and Laser Engineering, 2025, 54(8): 20250134

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    Paper Information

    Category: Laser

    Received: Feb. 28, 2025

    Accepted: --

    Published Online: Aug. 29, 2025

    The Author Email: Ming LI (lpfilter@163.com)

    DOI:10.3788/IRLA20250134

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