+ Translate

Remote sensing of the Earth with spaceborne imaging radars

, : Remote sensing of the Earth with spaceborne imaging radars. Progress in Astronautics and Aeronautics 97(Pages 639-683

Spaceborne imaging sensors in the visible, infrared and passive microwave have been used to observe and study the Earth's surface since the early stages of the space program. More recently, active microwave imaging sensors (radars) have been developed to extend our capability to study the Earth surface processes. Imaging radars, flown on Seasat (1978) and the Shuttle (1981, 1984), acquired synoptic images of a variety of geologic, biologic, and oceanographic features and provided new insight in some of the land and ocean processes. Subsurface synoptic imaging was achieved for the first time in some of the arid regions of the world. Soil moisture distribution after a rainstorm was clearly delineated, opening the possibility of its monitoring on a global basis. Polar ice distribution and dynamics over large areas in the Beaufort Sea were monitored over a three-month period, thus allowing the possibility of operational observation of ice dynamics in support of polar navigation. The successful development and flight of these spaceborne imaging radars was the result of major technological developments in the 1970s. They used some of the largest spaceborne lightweight planar array antennas (2X10 m) with printed radiating elements. The transmitters were fully solid state and generated a 1 kw peak power signal at L-band (1.2 Ghz). The processing of the received data to generate the high-resolution (25 to 40 m) imagery was done using both optical and digital processors. More advanced imaging radar systems are under development. Multispectral, multipolarization imaging radar systems are under development for flight in the late 1980s, thus extending our capability of detailed studies of the Earth surface processes and the nature of its cover. Extremely fast SAR digital processors are under development using the most advanced integrated circuits and allowing real-time processing of the data. This corresponds to a computational capability of 6X10 (super 9) operations/s. This chapter consists of a review of the recent scientific and technological developments in the field of Earth observation with spaceborne imaging radars and an overview of planned activities in the 1980s.

(PDF 0-2 workdays service)

Accession: 018458661

Submit PDF Full Text: Here

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Related references

Fussen, D.; Vanhellemont, F.; Bingen, C., 2008: Remote Sensing of the Earth 's Atmosphere by the Spaceborne Occultation Radiometer, ORA: Final Inversion Algorithm. We describe the final inversion algorithm developed to process solar occultation data measured in 1992-1993 by the Occultation Radiometer (ORA) spaceborne experiment. First we develop a new method to improve the ORA total extinction altitude profi...

Koopmans B.N., 1983: Spaceborne imaging radars, present and future. ITC Journal = Bulletin de l'ITC 3: 223-231

Goetz, A.F.; Vane, G.; Solomon, J.E.; Rock, B.N., 1985: Imaging spectrometry for Earth remote sensing. Imaging spectrometry, a new technique for the remote sensing of the earth, is now technically feasible from aircraft and spacecraft. The initial results show that remote, direct identification of surface materials on a picture-element basis can be...

Bodechtel J., 1983: Requirements for spaceborne remote sensing in geology. Pages 53-57 1983

Bodechtel, J.Z.lger, J., 1986: Principles and systems of spaceborne remote sensing. Zeitschrift fur Kulturtechnik und Flurbereinigung = Journal of rural engineering and development 27(1): 1-10

Wellman J.B.; Breckinridge J.B.; Kupferman P.; Salazar R.P.; Sigurdson K.B., 1982: Imaging spectrometer technologies for advanced earth remote sensing. Proceedings of SPIE The International Society for Optical Engineering: Pages 32-39. 1982.

Rao, P.P.N., 2002: Remote sensing application in natural resource management with special emphasis on use of radars. This paper examines the application of remote sensing technologies, geographical information systems and related computer-aided information processing and dissemination tools in the management of land, water and forest resources for sustainable cr...

Shahrokhi, F.R.udy, J., 1972: Remote sensing techniques in evaluating earth resources--a study of potential uses of remote sensing for southeastern U. S. Remote sensing of earth resources: 95-132

Dubucq M., 1986: Spaceborne remote sensing and soil erosion; bibliographic study. Cahiers OO.M.: Pedologie. 22; 2, Pages 247-258. 1986.

Frei, Urs, 1993: Compilation of cartographic and spaceborne remote sensing data for thematic