The Benefits of the Ka-Band as Evidenced from the SARAL/AltiKa Altimetric Mission: Quality Assessment and Unique Characteristics of AltiKa Data

被引：63

作者：

Bonnefond, Pascal ^{[1
]}

Verron, Jacques ^{[2
]}

Aublanc, Jeremie ^{[3
]}

Babu, K. N. ^{[4
]}

Berge-Nguyen, Muriel ^{[5
]}

Cancet, Mathilde ^{[6
]}

Chaudhary, Aditya ^{[4
]}

Cretaux, Jean-Francois ^{[5
]}

Frappart, Frederic ^{[5
,7
]}

Haines, Bruce J. ^{[8
]}

Laurain, Olivier ^{[9
]}

Ollivier, Annabelle ^{[3
]}

Poisson, Jean-Christophe ^{[3
]}

Prandi, Pierre ^{[3
]}

Sharma, Rashmi ^{[4
]}

Thibaut, Pierre ^{[3
]}

Watson, Christopher ^{[10
]}

机构：

[1] UPMC Univ Paris 06, Sorbonne Univ, PSL Res Univ, SYRTE,Observ Paris,CNRS,LNE, F-75014 Paris, France

[2] CNRS, IGE, F-38041 Grenoble, France

[3] CLS, F-31520 Ramonville St Agne, France

[4] Space Applicat Ctr ISRO, Ahmadabad 380015, Gujarat, India

[5] LEGOS, F-31400 Toulouse, France

[6] NOVELTIS, F-31670 Labege, France

[7] GET, F-31400 Toulouse, France

[8] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[9] Geoazur Observ Cote Azur, F-06905 Sophia Antipolis, France

[10] Univ Tasmania, Sch Geog & Environm Studies, Surveying & Spatial Sci Grp, Hobart, Tas 7001, Australia

来源：

REMOTE SENSING | 2018年 / 10卷 / 01期

关键词：

altimetry; Ka-band; data processing; calibration; validation; SURFACE SOIL-MOISTURE; ABSOLUTE CALIBRATION; BACKSCATTERING SIGNATURES; CROSS-CALIBRATION; RADAR ALTIMETERS; LAKE ISSYKKUL; GLOBAL OCEAN; WEST-AFRICA; RAIN; VALIDATION;

D O I：

10.3390/rs10010083

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The India-France SARAL/AltiKa mission is the first Ka-band altimetric mission dedicated to oceanography. The mission objectives are primarily the observation of the oceanic mesoscales but also include coastal oceanography, global and regional sea level monitoring, data assimilation, and operational oceanography. The mission ended its nominal phase after 3 years in orbit and began a new phase (drifting orbit) in July 2016. The objective of this paper is to provide a state of the art of the achievements of the SARAL/AltiKa mission in terms of quality assessment and unique characteristics of AltiKa data. It shows that the AltiKa data have similar accuracy at the centimeter level in term of absolute water level whatever the method (from local to global) and the type of water surfaces (ocean and lakes). It shows also that beyond the fact that AltiKa data quality meets the expectations and initial mission requirements, the unique characteristics of the altimeter and the Ka-band offer unique contributions in fields that were previously not fully foreseen.

引用

页数：26

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