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The special experiment using the Precipitation Radar (PR) onboard Tropical Rainfall Measuring Mission (TRMM) satellite was conducted from October 2014 to February 2015 during the end-of-mission of the satellite. Dense sampling obs...
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The special experiment using the Precipitation Radar (PR) onboard Tropical Rainfall Measuring Mission (TRMM) satellite was conducted from October 2014 to February 2015 during the end-of-mission of the satellite. Dense sampling observation experimental data (three and four times dense over-sampling) are analyzed to see the non-uniform beam filling effect and the its influences on the precipitation retrieval. Degradation of correlation coefficient with the distance are estimated by using the profiles of effective radar reflectivity factor and rain rate. Also non-uniform beam filling parameter are compared among the various data spacing. The result indicates that the four times dense sampling represent enough the fine scale to describe the precipitation cloud.
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This paper presents an overview of the MicroSAR satellite, showing the approach adopted to realise a truly low cost space-borne SAR system. The rationale leading to the proposed design, an outline of the overall structure of the a...
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This paper presents an overview of the MicroSAR satellite, showing the approach adopted to realise a truly low cost space-borne SAR system. The rationale leading to the proposed design, an outline of the overall structure of the associated imaging system, a review of the performance estimated for the resulting MicroSAR imaging system and a view of the airborne demonstrator, are provided.
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This paper presents an overview of the MicroSAR satellite, showing the approach adopted to realise a truly low cost space-borne SAR system. The rationale leading to the proposed design, an outline of the overall structure of the a...
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This paper presents an overview of the MicroSAR satellite, showing the approach adopted to realise a truly low cost space-borne SAR system. The rationale leading to the proposed design, an outline of the overall structure of the associated imaging system, a review of the performance estimated for the resulting MicroSAR imaging system and a view of the airborne demonstrator, are provided.
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This paper describes the INTASAR Program of Spanish National Institute for Aerospace Technology (INTA) which goal is to research in Synthetic Aperture Radar technology area. INTASAR constitutes an INTA's long-term program, which b...
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This paper describes the INTASAR Program of Spanish National Institute for Aerospace Technology (INTA) which goal is to research in Synthetic Aperture Radar technology area. INTASAR constitutes an INTA's long-term program, which basis is the development of airborne SAR prototypes, working presently in three complementary lines: SAR prototypes on-board CASA-212 platform, SAR developments in small platforms and participation in PAZ Program - Spanish radar satellite.
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Sparse arrays provide potential for improving the minimum detectable velocity (over 3 m/s improvement for sidelooking radar) of spaceborne moving target indication radar for a given physical aperture. This paper examines the benef...
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Sparse arrays provide potential for improving the minimum detectable velocity (over 3 m/s improvement for sidelooking radar) of spaceborne moving target indication radar for a given physical aperture. This paper examines the benefits and some of the challenges resulting from employing sparse arrays: grating lobes introduce ambiguities that may create Doppler blind zones; area coverage rate may reduce due to a narrower antenna main beam for coherent transmission; and intrinsic clutter motion may reduce the usable fraction of the Doppler space. We consider the application of orthogonal transmit waveforms to increase area coverage rate, as well as frequency diversity and aperiodic subarray spacings to mitigate Doppler blind zones.
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The ESA Sentinels constitute the first series of operational satellites responding to the Earth Observation needs of the EU-ESA Global Monitoring for Environment and Security (GMES) programme. The GMES space component relies on ex...
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The ESA Sentinels constitute the first series of operational satellites responding to the Earth Observation needs of the EU-ESA Global Monitoring for Environment and Security (GMES) programme. The GMES space component relies on existing and planned space assets as well as on new complementary developments by ESA. This paper describes the Sentinel-1 mission, an imaging synthetic aperture radar (SAR) satellite constellation at C-band. It provides an overview of the mission requirements, its applications and the preliminary technical concept for the system.
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The ESA Sentinels constitute the first series of operational satellites responding to the Earth Observation needs of the EU-ESA Global Monitoring for Environment and Security (GMES) programme. The GMES space component relies on ex...
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The ESA Sentinels constitute the first series of operational satellites responding to the Earth Observation needs of the EU-ESA Global Monitoring for Environment and Security (GMES) programme. The GMES space component relies on existing and planned space assets as well as on new complementary developments by ESA. This paper describes the Sentinel-1 mission, an imaging synthetic aperture radar (SAR) satellite constellation at C-band. It provides an overview of the mission requirements, its applications and the preliminary technical concept for the system.
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摘要 :
The ESA Sentinels constitute the first series of operational satellites responding to the Earth Observation needs of the EU-ESA Global Monitoring for Environment and Security (GMES) programme. The GMES space component relies on ex...
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The ESA Sentinels constitute the first series of operational satellites responding to the Earth Observation needs of the EU-ESA Global Monitoring for Environment and Security (GMES) programme. The GMES space component relies on existing and planned space assets as well as on new complementary developments by ESA. This paper describes the Sentinel-1 mission, an imaging synthetic aperture radar (SAR) satellite constellation at C-band. It provides an overview of the mission requirements, its applications and the preliminary technical concept for the system.
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摘要 :
The ESA Sentinels constitute the first series of operational satellites responding to the Earth Observation needs of the EU-ESA Global Monitoring for Environment and Security (GMES) programme. The GMES space component relies on ex...
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The ESA Sentinels constitute the first series of operational satellites responding to the Earth Observation needs of the EU-ESA Global Monitoring for Environment and Security (GMES) programme. The GMES space component relies on existing and planned space assets as well as on new complementary developments by ESA. This paper describes the Sentinel-1 mission, an imaging synthetic aperture radar (SAR) satellite constellation at C-band. It provides an overview of the mission requirements, its applications and the preliminary technical concept for the system.
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摘要 :
The ESA Sentinels constitute the first series of operational satellites responding to the Earth Observation needs of the EU-ESA Global Monitoring for Environment and Security (GMES) programme. The GMES space component relies on ex...
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The ESA Sentinels constitute the first series of operational satellites responding to the Earth Observation needs of the EU-ESA Global Monitoring for Environment and Security (GMES) programme. The GMES space component relies on existing and planned space assets as well as on new complementary developments by ESA. This paper describes the Sentinel-1 mission, an imaging synthetic aperture radar (SAR) satellite constellation at C-band. It provides an overview of the mission requirements, its applications and the preliminary technical concept for the system.
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