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24 April 1997 Lasercom test and evaluation station for flight-terminal evaluation
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Full-up pre-launch characterization of a lasercom terminal's communications and acquisition/tracking subsystems can provide quantitative characterization of the terminal and better realize the benefits of any demonstration. The lasercom test and evaluation station (LTES) being developed at NASA/JPL is a high quality optical system that will measure the key characteristics of lasercom terminals that operate over the visible and near-IR spectral region. The LTES's large receiving aperture will accommodate terminals up to 20 cm. in diameter. The unit has six optical channels and it measures far-field beam pattern, divergence, data rates up to 1.4 Gbps and bit-error rates as low as 10-9. It also measures the output power of the laser-terminal's beacon and communications channels. The 1 kHz frame rate camera in LTES's acquisition channel measures the point-ahead angle of the laser communications terminal to a resolution of 1 (mu) rad. When combined with the data channel detection, the acquisition channel measures acquisition and reacquisition times with a 1 ms resolution.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Keith E. Wilson, Norman A. Page, Abhijit Biswas, Hamid Hemmati, Kevin Masters, David M. Erickson, and James R. Lesh "Lasercom test and evaluation station for flight-terminal evaluation", Proc. SPIE 2990, Free-Space Laser Communication Technologies IX, (24 April 1997);


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