Angular signatures, and a space-borne measurement concept
The nature and value of angular signatures in remote sensing are reviewed with emphasis on the canopy hot-spot as a directionally localized angular signature and an important special case of a BRDF (bidirectional reflectance distribution function). A new concept is presented that allows hot spot measurements from space by using active (laser) illumination and bistatic detection. The detectors are proposed as imaging array sensors that are circulating the illumination source (or vice versa) and are connected with it through tethers in space which also provide the directional controls needed so that the entire system becomes pointable like a search light. Near infrared or IR operation in an atmospheric transmission winodw is envisioned with night-time data acquistion. Detailed feasibility and systems analyses have yet to be performed.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- National Aeronautics and Space Administration, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 228523
- Report Number(s):
- LA-UR-96-897; CONF-960504-8; ON: DE96009794
- Resource Relation:
- Conference: Institute of Electrical and Electronic Engineers (IEEE) international geoscience and remote sensing symposium, Lincoln, NE (United States), 28-31 May 1996; Other Information: PBD: [1996]
- Country of Publication:
- United States
- Language:
- English
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