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Record 1 of 44299
SPARCLE Optical System Design and Operational Characteristics
Offline Availability: Go to Request Form
Author and Affiliation:
Amzajerdian, Farzin(Alabama Univ., Center for Applied Optics, Huntsville, AL United States)
Peters, Bruce R.(Alabama Univ., Center for Applied Optics, Huntsville, AL United States)
Li, Ye(Alabama Univ., Center for Applied Optics, Huntsville, AL United States)
Blackwell, Timothy S.(Alabama Univ., Center for Applied Optics, Huntsville, AL United States)
Reardon, Patrick(Alabama Univ., Center for Applied Optics, Huntsville, AL United States)
Abstract: The SPAce Readiness Coherent Lidar Experiment (SPARCLE) is the first demonstration of a coherent Doppler wind lidar in space. SPARCLE will be flown aboard a space shuttle In the middle part of 2001 as a stepping stone towards the development and deployment of a long-life-time operational instrument in the later part of next decade. SPARCLE is an ambitious project that is intended to evaluate the suitability of coherent lidar for wind measurements, demonstrate the maturity of the technology for space application, and provide a useable data set for model development and validation. This paper describes the SPARCLE's optical system design, fabrication methods, assembly and alignment techniques, and its anticipated operational characteristics. Coherent detection is highly sensitive to aberrations in the signal phase front, and to relative alignment between the signal and the local oscillator beams. Consequently, the performance of coherent lidars is usually limited by the optical quality of the transmitter/receiver optical system. For SPARCLE having a relatively large aperture (25 cm) and a very long operating range (400 km), compared to the previously developed 2-micron coherent lidars, the optical performance requirements are even more stringent. In addition with stringent performance requirements, the physical and environment constraints associated with this instrument further challenge the limit of optical fabrication technologies.
Publication Date: Nov 01, 1999
Document ID:
20000013024
(Acquired Feb 11, 2000)
Subject Category: INSTRUMENTATION AND PHOTOGRAPHY
Document Type: Conference Paper
Publication Information: Tenth Biennial Coherent Laser Radar Technology and Applications Conference; 284-287; (NASA/CP-1999-209758); (SEE 20000012951)
Financial Sponsor: NASA Marshall Space Flight Center; Huntsville, AL United States
Organization Source: Alabama Univ.; Center for Applied Optics; Huntsville, AL United States
Description: 4p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: OPTICAL RADAR; DOPPLER RADAR; DESIGN ANALYSIS; SPACEBORNE EXPERIMENTS; METEOROLOGICAL RADAR; OPTICAL EQUIPMENT; COHERENT RADAR; TRANSMITTER RECEIVERS; LASER BEAMS; SPACE BASED RADAR; OPTICAL SCANNERS; MIRRORS; MAINTAINABILITY; WIND VELOCITY MEASUREMENT
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