Remote sensing for resources development and environmental management: Remote sensing for resources development and environmental management

damen, m. c. j.

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Multivolume work

Persistent identifier:: 856342815

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A. A. Balkema

Identifier (digital):: 856342815

Language:: English

Additional Notes:: Volume 1-3 erschienen von 1986-1988

Editor:: Damen, M. C. J.

Document type:: Multivolume work

Volume

Persistent identifier:: 856662364

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Scope:: VI, Seiten 959-1074

Year of publication:: 2016

Place of publication:: Rotterdam; Boston

Publisher of the original:: A. A. Balkema

Identifier (digital):: 856662364

Signature of the source:: ZS 312(26,7,3)

Language:: English

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

Editor:: Damen, M. C. J.

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:: Invited papers

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: Comparison of MOMS and Thematic Mapper, data for geoscientific application and aspects for future development of multispectral sensors. J. Bodechtel

Document type:: Multivolume work

Structure type:: Chapter

Symposium on Remote Sensing for Resources Development and Environmental Management/Enschede /August 1986 © 1987 Balkema, Rotterdam. ISBN 90 6191 674 7 Comparison of MOMS and Thematic Mapper, data for geoscientific application and aspects for future development of multispectral sensors J.Bodechtel AGF -Working Group Geoscientific Remote Sensing, Faculty of Geosciences, University of Munich, FR Germany The missions of the German Modular Optoelectronic Multispectral Scanner MOMS aboard two flights of the United States Space Transportation System STS demonstrated the feasibility of a novel concept with regard to both technical and scientific objectives. On account of the successful missions a cooperation was agreed between the German Federal Minister of Research and Technology and NASA for comparting MOMS observations with the more familiar operational Landsat-Thematic Mapper data over selected testsites as a means of obtaining some relative measure of performance. This paper summarizes the results obtained and presents the M0MS-02, a further experimental representative in the MOMS program aiming at the realzation of an operational system for the midnineties. INTRODUCTION The past successes in the field of remote sensing - based on the Landsat-MSS family - have supported the definition of a new generation of earth observation satellites. With the launch of the Thematic Mapper sensoraboard the Landsat-4 and -5 spacecrafts the U.S.A. are able to offer multi spectral imagery with a ground pixel size of 30 m and 7 spectral bands from which an optimum combination can be selected. In February 1986, France launched its SPOT into orbit. It is designed as an operational system and incorporates the new CCD technology. Particularly worth to be mentioned is its high ground resolution of 20 m in the multisprectral and 10 m in the panchromatic operating mode. SPOT is also the first scanner providing an experimental track-by track stereo imaging mode with tiltable mirrors. Within that scope the MOMS instrument development has been constituted by the Federal Minister for Research and Technology 8MFT. Due to its flexible modular concept, MOMS can be modified and adapted to fulfil specific requirements for a large variety of geoscientific tasks. M0MS-01 TECHNICAL CONCEPT The two experimental missions of M0MS-01 on the carrier structure SPAS aboard Shuttle flights STS-7/June '83 and STS-11 (%1-8)/February '84 were the first spacetests of an optoelectronic Scanning system for earth resources applications. The missions were to verify the technical concept under space conditions and to prove the applicability of high resolution CCD-data for geoscientific thematic mapping up to sales 1 : 50 000 / 1 : 25 000. A primary concept underlying the MOMS design and program is that of sensor and mission versatility. The modular construction facilitates the use of different sensor units or peripheral devices to suit the application and carrier platform for each mission. The modularity like - optical system per channel, exchange of lenses or filters, - focal plane assembly (detector arrays and immedi ate electronics variable in type and number), - different orientation of modules for stereo imaging enables e.g. the combination of high spatial resolution modules with medium spatial/ high spectral resolution modules (different focal lengths and ground pixel sizes), and an easy refurbishment or the use of newest developed technology (e.g. sensor arrays)(Fig. 1). Detector elements are charge coupled devices (CCD's) with 1723 pixels per array (Reticon CCPD 1728). Scan line extension beyond 1 CCD array (up to 6 per focal plane feasible) is done by the dual optics principle (Fig. 2). The essential advantages of the "pusch-broom" technology are: - simple, compact construction, no moving mechanical parts, - central geometry in the scanline/acquisition of a total scan line simultaneously, - digitized image coordinate data for the pixel coordinate correlation and their radiometric intensity, - high geometric and radiometric precision, reduced geometric data preorocessing effort. MOMS/THEMATIC MAPPER COMPARISON During the 2 M0MS-01 missions aboard Space Shuttle Challenger, a total number of 26 image sequences, could be recorded under mostly optimum weather conditions due to controlling the data acquisition in real-time on the basis of a global weather information network (Fiq. 4). Out of these data takes 5 testsites v/ere selected for a mutual exchange of MOMS and Thematic Mapper data. The testsites for the joint evaluation include a section of the Red Sea Hills in Northern Sudan, the Cordillera coast and mountain chains of the Atacama desert near Antofagasta, Chile, a scene in the vicinity of Nairobi, Kenya, a desertifica tion threatened section of the Sahel channel in Mali and in Saudi Arabia the cities of Jeddah, Makkah and At'Taif (see circles in Fig. 4). For comparison with the 575 - 625 nm MOMS band the Landsat-TM bands 2 and 3 (520 - 600 nm and 630 - 690 nm) were used. The MOMS 825 - 975 nm band was compared with the TM 790 - 900 nm band (see Fig. 5). Table 1 provides a breakdown of the differences 983

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