• Infrared and Laser Engineering
  • Vol. 49, Issue 11, 20200245 (2020)
Junfeng Xie1, Chenchen Yang1,2,*, Yongkang Mei1,3, and Baomin Han2
Author Affiliations
  • 1Land Satellite Remote Sensing Application Center, Ministry of National Resources, Beijing 100048, China
  • 2School of Civil and Architecture Engineering, Shandong University of Technology, Zibo 255000, China
  • 3College of Geoscience and Surveying Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China
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    DOI: 10.3788/IRLA20200245 Cite this Article
    Junfeng Xie, Chenchen Yang, Yongkang Mei, Baomin Han. Full waveform decomposition of spaceborne laser based on genetic algorithm[J]. Infrared and Laser Engineering, 2020, 49(11): 20200245 Copy Citation Text show less
    Gaussian decomposition of a single figure
    Fig. 1. Gaussian decomposition of a single figure
    Laser waveform in complex terrain
    Fig. 2. Laser waveform in complex terrain
    Original waveform
    Fig. 3. Original waveform
    Fitted waveform
    Fig. 4. Fitted waveform
    Data and gradient distribution map of GF-7 in the study area
    Fig. 5. Data and gradient distribution map of GF-7 in the study area
    Data and gradient distribution map of GF-7 in the study area
    Fig. 6. Data and gradient distribution map of GF-7 in the study area
    ParametersValue
    Laser beam2
    Pulse wavelength/nm1064
    Pulse energy/mJ100-180 (adjustable)
    Pulse width/ns4-8
    Repetition rate/Hz3/6 (adjustable)
    Digital interval/ns0.5
    Ranging range/km450-550
    Ranging accuracy/m≤0.3
    Table 1.

    Basic parameters of the GF-7 laser altimeter

    高分七号激光测高仪基本参数

    Feature typeTraditional methodImproved waveform data processing method
    NumberRSSR2NumberRSSR2
    Forest2Divergence040.000 170.993
    Mountain10.005 6740.93130.000 160.997
    Desert10.000 6790.990 510.000 169 90.997
    Duilding20.000 8350.99920.000 070.999
    Lake10.000 373 90.99810.000 040.999
    Sea10.000 160.9910.000 040.999
    Field10.001 180.99710.000 040.999
    Ice10.000 260.9910.000 040.999
    Table 2.

    Statistical table of waveform decomposition test results

    波形分解实验结果统计表

    Evaluating indicatorME/m RMSE/m COV
    Traditional method0.6183.160 90.71
    Improved waveform data processing method0.5341.160 90.87
    Table 3.

    Indexs comparison of accuracy evalution of the height extraction used by the traditional method and the improved method

    传统方法与改进方法树高提取精度指标对比

    Junfeng Xie, Chenchen Yang, Yongkang Mei, Baomin Han. Full waveform decomposition of spaceborne laser based on genetic algorithm[J]. Infrared and Laser Engineering, 2020, 49(11): 20200245
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