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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.8
- 수록면
- 363 - 370 (8page)
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The current waveform model of a laser altimeter is based on a Gaussian laser beam of fundamentalmode, while the flattened Gaussian beam has many advantages such as nearly constant energy distributionon the center of the cross-section. Following the theory of the flattened Gaussian beam and the waveformtheory of the laser altimeter, some of the primary parameters of the received waveform were derived, anda laser altimetry waveform simulator and waveform processing software were programmed and improvedunder the circumstance of a flattened Gaussian beam. The result showed that the bias between theoreticaland simulated waveforms was less than 3% for every order mode, the waveform width and range errorwould increase as target slope or order number rose. Under higher order mode, the shapes of the receivedwaveforms were no longer Gaussian, and could be fitted more precisely as a generalized Gaussian functionwith power bigger than 2. The flattened beam got much better performance for a multi-surface target,especially when the small surface is far from the center of the laser footprint. This article provides thewaveform theoretical basis for the use of a flattened Gaussian beam in a laser altimeter
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참고문헌 (16)
참고문헌 신청
B. E. Schutz / 2005 / Overview of the ICESat mission / Geophys. Res. Lett 32:L21S01-1-4
C. Hilbert / 2012 / Influence of surface topography on ICESat/GLAS forest height estimation and waveform shape / Remote Sensing 4:2210~2235
R. Kwok / 2012 / Arctic sea ice freeboard from IceBridge acquisitions in 2009: Estimates and comparisons with ICESat / J. Geophys. Res 117:C02018-1-1
C. S. Gardner / 1992 / Ranging performance of satellite laser altimeters / IEEE T. Geosci. Remote Sensing 30:1061~1072
B. M. Tsai / 1983 / Remote sensing of sea state using laser altimeters / Appl. Opt 21:3932~3940
C. Hilbert / 2012 / Influence of surface topography on ICESat/GLAS forest height estimation and waveform shape / Remote Sensing 4:2210~2235
R. Kwok / 2012 / Arctic sea ice freeboard from IceBridge acquisitions in 2009: Estimates and comparisons with ICESat / J. Geophys. Res 117:C02018-1-1
C. S. Gardner / 1992 / Ranging performance of satellite laser altimeters / IEEE T. Geosci. Remote Sensing 30:1061~1072
B. M. Tsai / 1983 / Remote sensing of sea state using laser altimeters / Appl. Opt 21:3932~3940
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