Proceedings of the Symposium on Global and Environmental Monitoring: Proceedings of the Symposium on Global and Environmental Monitoring

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Multivolume work

Persistent identifier:: 856665355

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts ; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856665355

Language:: English

Document type:: Multivolume work

Volume

Persistent identifier:: 856669164

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Scope:: XIV, 912 Seiten

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856669164

Illustration:: Illustrationen, Diagramme, Karten

Signature of the source:: ZS 312(28,7,1)

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: International Society for Photogrammetry and Remote Sensing, Commission of Photographic and Remote Sensing Data

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: [THP-4 MICROWAVE SENSING]

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: Analysis of ERS-1 Radar Image Data for Land Use Classification. Manfred Sties, Stefan Tex

Document type:: Multivolume work

Structure type:: Chapter

• to encourage development of techniques for satellite data assimilation in numerical mo dels and model tuning, • to stimulate and develop scientific research investigations using all-weather high or me dium resolution data from different microwave sensors over land, coastal zones, or ice at regional scales. To serve these scientific objectives a payload of instruments has been defined and developed which include ([ESA 1988]) • the Precise Range and Range Rate Equipment PRARE which is an active micro- wave ranging system to be used for orbit parameter determination at decimeter level of accuracy as well as for various geodetic applications; • the Radar Altimeter which will provide high precision measurements of the distance from the satellite to the underneath surface. Over oceans and smooth ice sheets, ac curacies significantly better than 10cm are expected, whereas over rough ice a special mode is available with coarser resolution and more agility. With precise knowledge of the orbit, the absolute elevation of ocean and ice surfaces can be calculated for use in geodesy, ocean and ice topography, etc. The instrument will also operate over land surfaces where the terrain is not too mountainous; • the Along-Track Scanning Radiometer and Microwave Sounder ATSR-M which is a passive instrument consisting of a 4-channel infrared radiometer providing measu rements of sea-surface and cloud-top temperatures, and a 2-channel microwave sounder providing information on the total water-vapour content of the atmosphere; • the Active Microwave Instrument AMI, which is a multipurpose radar sensor with 3 basic modes of operation: 1. the wind mode: the purpose of the wind mode is to obtain measurments on wind speed and direction at the sea surface. The scatterometer will measure the echo power of the signal transmitted from the satellite; the echo power is affected by the surface wind conditions. Wind mode specifications include wind direction range of 0 — 360°, wind speed range of 4 - 24 m/s, spatial resolution of 50 km, swath width and location of 200 km to 700 km off subsatellite track; 2. the wave mode: the SAR system can be operated in a special wave mode: regularly spaced sample areas within the 100 km swath will be imaged; these images will be transformed into directional spectra providing measurements of ocean wave length and direction; wave mode specifications include wave direction range of 0 — 180°, wave length range of 100 - 1000 m, sample area size of 5 km x 5 km every 200 - 300 km within the radar swath; 3. the imaging mode: the normal SAR imaging mode will deliver strips of high resolution radar imagery; SAR system specifications include spatial resolution of 30m x 30m, radiometric resolution of 2.5 dll at rr u = - IN (///, swat h width of 100 km, incidence angle of 23° at mid-swath, radar frequency of5.3(lhz ( C - Hand ), VV polarization, peak power of 4.8 KW allowing only 10 minutes of imaging per orbit, data rate of lOOMHps preventing image recording on board and allowing operation only in direct line of sight of a ground receiving station.

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