系统参数对激光测高仪海洋测距和回波脉宽影响

马跃; 李松; 周辉; 易洪

doi:10.3788/OPE.20132103.0813

您当前的位置：

首页 >

文章列表页 >

系统参数对激光测高仪海洋测距和回波脉宽影响

信息科学 | 更新时间：2020-08-12

- 系统参数对激光测高仪海洋测距和回波脉宽影响
- Effect of system parameters on ranging and pulse width in ocean satellite laser altimeter system
- 光学精密工程 2013年21卷第3期页码：813-820
- 作者机构：
  
  武汉大学电子信息学院,湖北武汉,中国,430072
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目(51575523);民用航天预研项目资助(No.D020101)
- DOI：10.3788/OPE.20132103.0813
  中图分类号： P237;TH761.3
- 收稿日期：2012-07-20，
  
  修回日期：2012-10-30，
  
  网络出版日期：2013-03-20，
  
  纸质出版日期：2013-03-15
- 稿件说明：
移动端阅览
马跃李松周辉易洪. 系统参数对激光测高仪海洋测距和回波脉宽影响[J]. 光学精密工程, 2013,21(3): 813-820

MA Yue LI Song ZHOU Hui YI Hong. Effect of system parameters on ranging and pulse width in ocean satellite laser altimeter system[J]. Editorial Office of Optics and Precision Engineering, 2013,21(3): 813-820
马跃李松周辉易洪. 系统参数对激光测高仪海洋测距和回波脉宽影响[J]. 光学精密工程, 2013,21(3): 813-820 DOI： 10.3788/OPE.20132103.0813.

MA Yue LI Song ZHOU Hui YI Hong. Effect of system parameters on ranging and pulse width in ocean satellite laser altimeter system[J]. Editorial Office of Optics and Precision Engineering, 2013,21(3): 813-820 DOI： 10.3788/OPE.20132103.0813.

摘要

星载激光测高仪的回波时间重心和脉冲宽度等系统参数对常见海态条件下的测距和反演精度有重要影响。本文根据菲涅尔衍射理论、海洋表面镜面反射理论、海洋波高和斜率统计特性以及激光测高仪回波误差理论，推导并更正了激光测高仪海洋回波光子数表达式。首次完整推导出了影响海洋回波重心和脉宽因素的表达式，证明了回波参数主要受发射脉冲宽度、测量天底角、指向角抖动和海洋表面上方风速影响。除风速为表面特性影响外，其余为系统参数影响。结合地球科学激光测高系统（GLAS）参数对其海洋回波的测距和脉宽精度做了定量分析，得出不同风速GLAS的海洋表面单回波测距误差为2~15 cm，脉宽标准差为0.5~3.5 ns。推导结果对优化设计用于海洋表面测量的星载激光测高仪系统参数、提高回波反演目标特性精度很有意义。

Abstract

The system parameters such as the centroid and pulse width of a laser altimeter system have great effects on its accuracy in ranging and inversion under the condition of a common sea state. Therefore

this paper deduce the functions referred to influencing factors of centroid and pulse width and corrects the received photon function of ocean surface according to the theory of Fresnel diffraction

the character of specular reflection

statistical regularity of ocean surface profile and the error theory of laser altimeter systems. It gives complete influencing factors on the centroid and pulse width

which include the transmitted and received instruments

nadir angles

pointing jitters and wind speeds. Among them

the first three factors are all system parameters

and the wind speed is a surface characteristic. Combined with the parameters of Geoscience Laser Altimeter System）GLAS

the error of range and the accuracy pulse width are calculated and analyzed. The results show that the ranging error of GLAS is from 2 to 15 cm

and that of the pulse width is from 0.5 to 3.5 ns under different wind speeds. The obtained conclusion is significant for the design and accuracy analysis of ocean laser altimeter systems.

关键词

Keywords

references

EERO R, ANDREW S, ALAN M, et al.. A comparison of recent elevation change estimates of the devon ice cap as measured by the ICESat and EnviSAT satellite altimeters [J]. IEEE Transaction on Geoscience and Remote Sensing, 2011,49(6):1902-1910.[2]李松，周辉，石岩,等. 激光测高仪的回波信号理论模型[J]. 光学精密工程，2007，15(1): 33-39.LI S, ZHOU H, SHI Y, et al.. Theoretical model for return signal of laser altimeter [J]. Opt. Precision Eng., 2007, 15(1):33-39. (in Chinese)[3]GARDNER C S. Target signatures for laser altimeters: an analysis [J]. Applied Optics, 1982,21(3): 448-453.[4]TSAI B M, GARDNER C S. Remote sensing of sea state using laser altimeters [J]. Applied Optics, 1982,21(21): 3932-3940.[5]ANITA C B, ZWALLY H J, CHARLES R B, et al.. Derivation of range and range distributions from laser pulse waveform analysis for surface elevations, roughness, slope, and vegetation heights \[R\]. GLAS Algorithm Theoretical Basis Document Version 4.1, 2003.[6]CHESTER S G. Ranging performance of satellite laser altimeters [J]. Transactions on Geoscience and Remote Sensing, 1992,30(5): 1061-1072.[7]JACK L B, FRANK E H, ROBERT N S. Airborne measurement of laser backscatter from the ocean surface[J]. Applied Optics, 1983,22(17): 2603-2618.[8]JOSSET D, PELON J, PROTAT A, et al.. New approach to determine aerosol optical depth from combined CALIPSO and CloudSat ocean surface echoes [J]. Geophysical Research Letters, 2008, 35(5): 1-5.[9]LIU Y G, SU M Y, YAN X H, et al.. The mean square slope of ocean surface waves and its effects on radar backscatter [J]. Journal of Atmospheric and Oceanic Technology, 2000, 17(5): 1092-1105.[10]COX C, MUNK W. Measurement of the roughness of the sea surface from photographs of the sun's glitter[J]. Journal of the optical society of America, 1954,44(11): 838-850.[11]PHILLIPS O M. The Dynamics of the Upper Ocean \[M\]. Cambridge U. P. ,London, 1977.[12]SCHUTZ B E. Laser footprint location and surface profiles \[R\]. GLAS Algorithm Theoretical Basis Document Version 3.0, 2002.10.[13]GEORGE M H, MARVIN R Q. Optical constants of water in the 200 nm to 200 m wavelength region [J]. Aplied Optics, 1973,12(3): 555-563. [14]ROWLANDS D D, CARABAJAL C C, LUTHCKE S B, et al.. Satellite laser altimeter: on-orbit calibration techniques for precise geolocation [J]. The Review of Laser Engineering, 2000, 12: 796-803.[15]LUTHCKE S B, ROWLANDS D D, STONEKING E. Space laser altimeter pointing bias calibration from range residual analysis [J]. Journal of spacecraft and rockets, 2000(37): 374-384.

浏览量

150

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

波导式偏振调制测距系统

正交调制降频相位式激光测距

适用于立方体卫星的激光测距合作目标

长春站高重复频率空间碎片激光测距技术

采用红外扫描激光与超声技术的室内空间定位