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  • 1
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    Radar For Measuring Vertical Cloud Structure (1995)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Proposed radar system views clouds from above and measures their vertical structures with resolution of 500 m. Two versions of system; initial developmental version to be flown aboard aircraft and final version flown aboard spacecraft in circular orbit around Earth at altitude of 400 km.
    Keywords: ELECTRONIC SYSTEMS
    Type: NPO-19495 , NASA Tech Briefs (ISSN 0145-319X); 19; 7; P. 43
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Suppression Of Range Sidelobes In Spaceborne Rain-Mapping Radar (1994)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Adequate suppression of range sidelobes in chirp pulse-compression radar system for spaceborne rain-mapping application demonstrated in operation of aircraft version of system. Radar system operates at center frequency of 13.8 GHz, developed for operation aboard NASA DC-8 aircraft to measure vertical rainfall-rate profiles and rain-cell dimensions. Sidelobes suppressed by at least 55 dB. Technique applied to other frequencies, therefore, useful in other radar systems in which low sidelobes at mid to far range needed.
    Keywords: ELECTRONIC SYSTEMS
    Type: NPO-18515 , NASA Tech Briefs (ISSN 0145-319X); 18; 5; P. 85
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 3
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    Spaceborne Radar Would Measure Rain And Clouds (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Report describes conceptual design of spaceborne radar system mapping precipitation and clouds at mid-latitudes to provide data for research on global weather and climate. Radar operates at two frequencies. Lower (35 GHz) provides vertical profiles of rainfall at rates up to 20 mm/h and enables probing of cirrus clouds. Higher (94 GHz) enables detection and quantitative measurements of clouds of all types and provides rain profiles at rates up to 10 mm/h.
    Keywords: ELECTRONIC SYSTEMS
    Type: NPO-18274 , NASA Tech Briefs (ISSN 0145-319X); 16; 7; P. 44
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 4
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    Radar Altimetry For Topographical Mapping (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Two altimeter concepts based on spaceborne synthetic-aperture-radar (SAR) proposed to gather global, uniformly sampled, high-resolution, topographical data on land and ice. Wide swath and high pulse rate of SAR makes possible to acquire spatially contiguous data over large areas in reasonable amount of time, and time needed for altimetric processing of SAR data considerably less than that needed to generate topographical maps from stereoscopic photographs. Radar less vulnerable to cloud cover and other weather conditions than optical techniques.
    Keywords: ELECTRONIC SYSTEMS
    Type: NPO-18254 , NASA Tech Briefs (ISSN 0145-319X); 16; 10; P. 37
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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