Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Impact of Receiver Saturation on Surface Doppler Velocity Measurements From the EarthCARE Cloud Profiling Radar
Antenna-pointing techniques that rely on Earth's surface Doppler velocity measurements are expected to play a crucial role in enabling antenna mispointing corrections in spaceborne radar systems. Here, the impact of the EarthCARE cloud profiling radar (CPR) receiver saturation on the quality of the surface Doppler velocity measurements is discussed. The CPR linear receiver is expected to saturate always from surface echoes. Our results based on an I/Q simulation framework show that for the EarthCARE radar configuration: 1) biases introduced by saturation will be negligible; 2) the standard deviation of the velocity estimates will increase by 30-50% when moving from unsaturated to completely saturated surface return for a corresponding pulse repetition frequency in the range between 6.1 and 7.5 kHz. As a consequence longer integration times will be necessary to achieve the same accuracy in presence of complete saturation.
Impact of Receiver Saturation on Surface Doppler Velocity Measurements From the EarthCARE Cloud Profiling Radar
Antenna-pointing techniques that rely on Earth's surface Doppler velocity measurements are expected to play a crucial role in enabling antenna mispointing corrections in spaceborne radar systems. Here, the impact of the EarthCARE cloud profiling radar (CPR) receiver saturation on the quality of the surface Doppler velocity measurements is discussed. The CPR linear receiver is expected to saturate always from surface echoes. Our results based on an I/Q simulation framework show that for the EarthCARE radar configuration: 1) biases introduced by saturation will be negligible; 2) the standard deviation of the velocity estimates will increase by 30-50% when moving from unsaturated to completely saturated surface return for a corresponding pulse repetition frequency in the range between 6.1 and 7.5 kHz. As a consequence longer integration times will be necessary to achieve the same accuracy in presence of complete saturation.
Impact of Receiver Saturation on Surface Doppler Velocity Measurements From the EarthCARE Cloud Profiling Radar
Battaglia, Alessandro (Autor:in) / Kollias, Pavlos
2015
Aufsatz (Zeitschrift)
Englisch
Lokalklassifikation TIB:
770/3710/5670
BKL:
38.03
Methoden und Techniken der Geowissenschaften
/
74.41
Luftaufnahmen, Photogrammetrie
Using Ice Clouds for Mitigating the EarthCARE Doppler Radar Mispointing
| Online Contents | 2015
Estimated surface-wave contributions to radar Doppler velocity measurements of the ocean surface
| Online Contents | 2003
NONINVASIVE SURFACE WAVES MEASUREMENTS FOR SHEAR WAVE VELOCITY PROFILING
| British Library Conference Proceedings | 1999
| British Library Conference Proceedings | 2004