Study on accuracy assessment of DEM in the marsh wetland using multi-frequency InSAR

doi:10.13474/j.cnki.11-2246.2019.0308

Abstract

Abstract: In this paper, the interferometric SAR data of three wavelengths are selected to extract the DEM of the marsh wetland area, and 111 points of data are randomly selected from the 1:10 000 topographic map for accuracy verification. Finally, the interference coherence difference of the swamp wetland vegetation for different SAR wavelengths is compared and analyzed. The results show that the ALOS-1 PALSAR images (L-band, HH) are in good agreement with the 1:10 000 topographic map data, and the difference of elevation value of 76.58% is within 3 meters, and its coherence coefficient is also higher than that of Sentinel-1A images (C-band, VV, IW model) and TerraSAR images (X-band, HH). So, it's more suitable to extract DEM of swamp wetland by radar interferometry. The coherence coefficient of different wetland vegetation types is also quite different. The distribution area of forest and shrub-grass vegetation has a larger coherence coefficient, while the shallow-water marsh vegetation area and deep-water marsh vegetation area are relatively low.

Key words: InSAR, DEM, marsh wetland, accuracy verification, interference coherence difference

CLC Number:

P237

FU Bolin, GENG Renfang, LI Ying, GAO Ertao, FAN Donglin. Study on accuracy assessment of DEM in the marsh wetland using multi-frequency InSAR[J]. 测绘通报, 2019, 0(10): 1-7.

References 21

[1]	ZHANG L, WANG M H, HU J. A review of published wetland research, 1991-2008:ecological engineering and ecosystem restoration[J]. Ecological Engineering, 2010, 36(8):973-980.
[2]	KATE C F, WARREN B C, YANG Z Q. Landsat-based monitoring of annual wetland change in the Willamette Valley of Oregon, USA from 1972 to 2012[J]. Wetlands Ecology and Management, 2016,24(1):73-92.
[3]	张树文,颜凤芹,于灵雪,等.湿地遥感研究进展[J].地理科学,2013,33(11):1406-1412.
[4]	DAVIDSON N C. How much wetland has the world lost? long-term and recent trends in global wetland area[J]. Marine and Freshwater Research,2014,65(10):934-941.
[5]	XIE Z, LIU Z, JONES J W, et al. Landscape unit based digital elevation model development for the freshwater wetlands within the Arthur C. Marshall Loxahatchee National Wildlife Refuge, Southeastern Florida[J]. Applied Geography, 2011, 31(2):401-412.
[6]	LIU Z,VOLIN J C,DIANNE OWEN V, et al. Validation and ecosystem applications of the EDEN water-surface model for the Florida Everglades[J]. Ecohydrology, 2009, 2(2):182-194.
[7]	HARVEY J W, SCHAFFRANEK R W, NOE G B, et al. Hydroecological factors governing surface water flow on a low-gradient floodplain[J]. Water Resources Research, 2009, 45(3). https://doi.ogr/10.1029/2008wk007129.
[8]	张力, 袁枫.光学航天传感器几何建模与DEM生成新进展[J].地理信息世界,2009,7(2):53-62,71.
[9]	胡德勇,李京,陈云浩,等.不同模式Radarsat影像DEM提取及精度比较[J].遥感技术与应用,2006(6):541-546.
[10]	LIU X. Airborne LiDAR for DEM generation:some critical issues[J]. Progress in Physical Geography, 2008, 32(1):31-49.
[11]	王志勇,张继贤,张永红.从InSAR干涉测量提取DEM[J].测绘通报,2007(7):27-29,34.
[12]	刘国祥,丁晓利,陈永奇,等.极具潜力的空间对地观测新技术-合成孔径雷达干涉[J]. 地球科学进展,2000, 15(6):734-740.
[13]	张有军,岳顺. InSAR技术提取DEM及其精度分析[J].勘察科学与技术,2017(5):23-26.
[14]	WDOWINSKI S, KIM S W, AMELUNG F, et al. Space-based detection of wetlands' surface water level changes from L-band SAR interferometry[J]. Remote Sensing of Environment, 2008, 112(3):681-696.
[15]	谢酬,邵芸,方亮,等.差分干涉测量黄河三角洲天然湿地水位变化研究[J].湿地科学,2012,10(3):257-262.
[16]	刘国祥,丁晓利,李志林,等. InSAR DEM的质量评价[J].遥感信息,2000(4):7-10,96.
[17]	SEFERCIK U G, YASTIKLI N, DANA I. DEM extraction in urban areas using high-resolution TerraSAR-X imagery[J]. Journal of the Indian Society of Remote Sensing, 2014, 42(2):279-290.
[18]	GATELLI F, GUAMIERI A M, PARIZZI F, et al. The wavenumber shift in SAR interferometry[J]. IEEE Transactions on Geoscience and Remote Sensing, 1994, 32(4):855-865.
[19]	RABUS B, EINEDER M, ROTH A, et al. The shuttle radar topography mission-a new class of digital elevation models acquired by spaceborne radar[J]. ISPRS Journal of Photogrammetry and Remote Sensing, 2003, 57(4):241-262.
[20]	LI Z, BETHEL J. Image coregistration in SAR interferometry[J]. The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2008, 37:433-438.
[21]	GOLDSTEIN R M, WERNER C L. Radar interferogram filtering for geophysical applications[J]. Geophysical Research Letters, 1998, 25(21):4035-4038.