Anterior|Siguiente

Terrain height assessment of satellite laser altimetry standard products for natural resources

  • role： First author第一作者
  • Affiliation：

    Land Satellite Remote Sensing Application Center, Ministry of Natural Resources, Beijing 100048, China

  • Email：chenjy@lasac.cn
  • Introduction：陈继溢，研究方向为卫星激光测高数据处理和应用。E-mail： chenjy@lasac.cn
CHEN Jiyi1,  
  • role： Corresponding author通信作者
  • Affiliation：

    Land Satellite Remote Sensing Application Center, Ministry of Natural Resources, Beijing 100048, China

    Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China

  • Email：tangxinming99@qq.com
  • Introduction：唐新明，研究方向为卫星测绘数据处理与应用。E-mail： tangxinming99@qq.com
TANG Xinming12*,  
  • Affiliation：

    Land Satellite Remote Sensing Application Center, Ministry of Natural Resources, Beijing 100048, China

    Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China

LI Guoyuan12,  
  • Affiliation：

    Land Satellite Remote Sensing Application Center, Ministry of Natural Resources, Beijing 100048, China

LIU Zhao1,  
  • Affiliation：

    Land Satellite Remote Sensing Application Center, Ministry of Natural Resources, Beijing 100048, China

    Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China

ZHOU Xiaoqing12

resumen

Satellite laser altimetry technology, with its ability to acquire highly accurate vertical distribution information, possesses unique advantages in the field of Earth observation. Currently, different satellite laser altimetry systems are operating in orbit both domestically and internationally. In recent years, China has launched the GF-7 satellite and ZY3-03 satellite, both equipped with laser altimetry systems, which are primarily employed for acquiring global laser elevation control points. With the steady operation of these satellites in orbit and the continuous acquisition of laser altimetry data, China has, for the first time, formed related data products in the field of laser altimetry, called Satellite Laser Altimetry standard (SLA03) data products for natural resources. To better understand the accuracy level of the products and guide the subsequent application and optimization, a comprehensive accuracy evaluation must be conducted. Based on the high-accurate airborne LiDAR data gathered in plain areas and mountainous regions with forests, thousands of laser points are collected to comprehensively evaluate the terrain height accuracy of the SLA03 data products for natural resources in this paper. After coordinate transformation and data conversion, the SLA03 data and reference data are unified into the same coordinate framework. Then, taking the size of the laser ground spot into consideration, the reference terrain elevations are obtained based on the points classified as ground from the LiDAR data. Multiple accuracy metrics, including overall bias, Mean Absolute Error (MAE), Root Mean Square Error (RMSE), and 90th percentile Linear Error (LE90), are utilized for elevation accuracy assessment. Results show that, after eliminating the laser points located at tree canopies or buildings using a proper threshold, the height accuracy of the SLA03 data products from the GF-7 satellite is 0.653 m in RMSE and 1.055 m in LE90 in plain areas, with over 60% under 0.3 m, but decreases to 1.210 m (RMSE) and 2.002 m (LE90) in mountainous regions with forests. The accuracy of the SLA03 data products from the ZY3-03 satellite is 1.312 m (RMSE) and 2.389 m (LE90) in plain areas with more than 50% under 0.5 m, while in the mountainous regions with forests, it declines to 1.661 m (RMSE) and 2.999 m (LE90). The potential for elevation control points in the plains is above 60% for both the GF-7 and ZY3-03 satellites, but additional screening is required before use. The elevation accuracy of SLA03 products from the GF-7 satellite is obviously affected by seasonal factors, which are mainly caused by vegetation growth. Meanwhile, the elevation accuracy of SLA03 products from the ZY3-03 satellite is inferior to that of the GF-7 satellite, hindering the former satellite from effectively distinguishing the impact of seasonal changes in vegetation. The relevant conclusions will guide the effective application of SLA03 products and provide support for the design and parameter argumentation of subsequent satellite laser altimetry systems.

palabra clave

remote sensing;satellite laser altimetry;the GF-7 Satellite;the ZY3-03 Satellite;Elevation Accuracy;the SLA03 Data Product

References

  1. 1.
    Chen X Y, Qiao Z Y, Long X X, Li Q P, Liu X T, Zhong H M, Wang X Y and Wang J H. 2023. Construction of ageo-location Model and Verification of GF-7 spaceborne laser altimetry. National Remote Sensing Bulletin, 27(5): 1228-1237
  2. 2.
    Guo J Q, Li G Y, Pei L, Yao J Q and Nie S. 2022. Preliminary study on echo saturation identification and altimetry error correction of laser altimetry satellite waveform. National Remote Sensing Bulletin, 26(8): 1674-1684
  3. 3.
    Jin R, Li X, Ma M G, Ge Y, Liu S M, Xiao Q, Wen J G, Zhao K, Xin X P, Ran Y H, Liu Q H and Zhang R H. 2017. Key Methods and experiment verification for the validation of quantitative remote sensing products. Advances in Earth Science, 32(6): 630-642
  4. 4.
    Li G Y, Gao X M, Chen J Y, Zhao Y M, Mo F and Zhang Y. 2019. Data quality analysis of ZY-3 02 satellite laser altimeter. Journal of Remote Sensing, 23(6): 1159-1166
  5. 5.
    Li G Y and Tang X M. 2017. Analysis and validation of ZY-3 02 satellite laser altimetry data. Acta Geodaetica et Cartographica Sinica, 46(12): 1939-1949
  6. 6.
    Li G Y, Tang X M, Chen J Y, Me J Q, Liu Z, Gao X M, Zuo Z Q and Zhou X Q. 2021. Processing and preliminary accuracy validation of the GF-7 satellite laser altimetry data. Acta Geodaetica et Cartographica Sinica, 50(10): 1338-1348
  7. 7.
    Li G Y, Tang X M, Gao X M, Wang X, Fan W F, Chen J Y and Mo F. 2018. Integration of ZY3-02 satellite laser altimetry data and stereo images for high-accuracy mapping. Photogrammetric Engineering and Remote Sensing, 84(9): 569-578
  8. 8.
    Li G Y, Tang X M, Zhou P, Chen J Y, Liu Z, Dou X H, Zhou X Q and Wang X. 2022. Laser altimetry data processing and combined surveying application of ZY3-03 satellite. Infrared and Laser Engineering, 51(5): 20210356
  9. 9.
    Mei Y K, Xie J F, Chen W and Liu R. 2022. Elevation control points extraction of spaceborne lasers with multi-feature parameter constraints. Infrared and Laser Engineering, 51(9): 20210997
  10. 10.
    Tang X M, Li G Y, Chen J Y and Liu Z. 2022. Product Specification for Natural Resources Satellite Laser Altimetry Data V1.0. Beijing: Land Satellite Remote Sensing Application Center, Ministry of Natural Resources
  11. 11.
    Tang X M, Li G Y, Gao X M and Chen J Y. 2016. The rigorous geometric model of satellite laser altimeter and preliminarily accuracy validation. Acta Geodaetica et Cartographica Sinica, 45(10): 1182-1191
  12. 12.
    Tang X M, Xie J F, Liu R, Huang G H, Zhao C G, Zhen Y, Tang H Z and Dou X H. 2020. Overview of the GF-7 laser altimeter system mission. Earth and Space Science, 7(1): e2019EA000777
  13. 13.
    Tang X M, Xie J F, Mo F, Dou X H, Li X, Li S L, Li S, Huang G H, Fu X K, Liu R, Zhu G B, Ouyang S D, Tang H Z and Chen H. 2021. GF-7 dual-beam laser altimeter on-orbit geometric calibration and test verification. Acta Geodaetica et Cartographica Sinica, 50(3): 384-395
  14. 14.
    USGS_IA_NorthCentral_2020_D20_Project_Report, , ataccessed 2022-10-21
  15. 15.
    USGS_PA_WesternPA_2019_D20_WP_Report, , ataccessed 2022-10-21
  16. 16.
    Xie J F, Yang C C, Mei Y K and Han B M. 2020. Full waveform decomposition of spaceborne laser based on genetic algorithm. Infrared and Laser Engineering, 49(11): 20200245
  17. 17.
    Yao J Q, Li G Y, Chen J Y, Zhou X Q, Guo A Y, Huang G H, Tang X M and Ai B. 2021. Analysis on the change of GF-7 satellite laser altimeter spot centroid position. Infrared and Laser Engineering, 50(S2): 20210539
  18. 18.
    Zhang G, Xu K, Jia P, Hao X Y and Li D R. 2019. Integrating stereo images and laser altimeter data of the ZY3-02 satellite for improved earth topographic modeling. Remote Sensing, 11(20): 2453
  19. 19.
    Zhang Z J, Xie H, Tong X H, Zhang H W, Tang H, Li B B, Wu D, Hao X L, Liu S J, Xu X, Liu S C, Chen P, Feng Y J, Wang C and Jin Y M. 2020. A combined Deconvolution and Gaussian decomposition approach for overlapped peak position extraction from large-footprint satellite laser altimeter waveforms. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 13: 2286-2303
  20. 20.
    Zhou P, Tang X M, Li D D and Wang X. 2022. Combined block adjustment of stereo imagery and laser altimetry points of the ZY3-03 satellite. IEEE Geoscience and Remote Sensing Letters, 19: 6506705
  21. 21.
    Zuo Z Q, Tang X M, Li G Y and Li S. 2020. Adaptive Gaussian filtering of the full waveform of GF-7 satellite laser altimeter. Infrared and Laser Engineering, 49(11): 20200251

Leer el texto completo

The above content is generated by Large Model Translation. The translated content is for reference only. We do not assume any commercial or legal responsibilty for any consequences arising from the use of our website