+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ 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: $29.90)

Accession: 018458661

Download citation: RISBibTeXText

Related references

Remote Sensing of the Earth 's Atmosphere by the Spaceborne Occultation Radiometer, ORA: Final Inversion Algorithm. Applied Optics 40(6): 941-948, 2008

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

Imaging spectrometry for Earth remote sensing. Science 228(4704): 1147-1153, 1985

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

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

Imaging spectrometer technologies for advanced earth remote sensing. Proceedings of SPIE The International Society for Optical Engineering: Pages 32-39. 1982., 1982

Remote sensing application in natural resource management with special emphasis on use of radars. Proceedings of the First National Conference on Agri Informatics NCAI, Dharwad, India, 3-4 June 2001: 15-19, 2002

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, 1972

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

Compilation of cartographic and spaceborne remote sensing data for thematic. 1993

Remote sensing of atmospheric aerosol using spaceborne optical observations. Earth-Science Reviews 116: 95-108, 2013

Airborne/spaceborne remote sensing for the grape and wine industry. First Australian Geospatial Information and Agriculture Conference, Sydney, Australia, 17-19 July 2001: 600-608, 2001

Soil moisture retrieval from optical and thermal spaceborne remote sensing. Communications in Agricultural and Applied Biological Sciences 70(2): 27-30, 2005

Problems of mountain hazard mapping using spaceborne remote sensing techniques. Advances in Space Research 15(11): 57-66, 1995

Recent progress in geologic application of airborne and spaceborne remote sensing. Advances in Space Research 13(11): 15-21, 1993