GPS radio occultation with CHAMP

被引：0

作者：

Wickert, J ^{[1
]}

Beyerle, G ^{[1
]}

Schmidt, T ^{[1
]}

Marquardt, C ^{[1
]}

König, R ^{[1
]}

Grunwaldt, L ^{[1
]}

Reigber, C ^{[1
]}

机构：

[1] Geoforschungszentrum Potsdam, Div 1, D-14473 Potsdam, Germany

来源：

FIRST CHAMP MISSION RESULTS FOR GRAVITY, MAGNETIC AND ATMOSPHERIC STUDIES | 2003年

关键词：

CHAMP; GPS; radio occultation; remote sensing; selective availability; space-based single differencing; GFZ potsdam;

D O I：

暂无

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The GPS (Global Positioning System) radio occultation experiment onboard the German CHAMP (CHAllenging Minisatellite Payload) satellite was activated in February 2001. By the end of 2001 about 36,500 occultations were recorded. We review the occultation data processing at the GFZ and discuss selected first results. 1) CHAMP allows for atmospheric sounding with high accuracy despite of the Anti-Spoofing (A/S) mode of the GPS. 2) There are advantageous consequences for the GPS data processing due to the termination of the Selective Availability (SA) mode of the GPS. It is possible to reduce the GPS ground station acquisition rate for double difference processing. The application of space-based single differencing technique for precise occultation data processing became feasible. 3) The state-of-the-art GPS flight receiver onboard CHAMP combined with high-gain occultation antenna allows for atmospheric sounding deep into the lower troposphere. Possible applications and improvements of occultation data analysis in the lower troposphere are discussed.

引用

页码：371 / 383

页数：13

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