Frequency Domain Laser Velocimeter Signal Processor: A New Signal Processing SchemeNational Aeronautics and Space Administration, Scientif. and Techn. Information Branch, 1987 - 38 pages |
Common terms and phrases
1-bit shift register 20 percent amplitude analog-to-digital converter automatic frequency control automatic gain automatic gain control average signal frequency bandpass filters bandwidth burst counter Proposed Burst Detection Circuit bursts per measurement circuitry comparisons of input counter and frequency counter Proposed processor digital filter domain laser velocimeter domain signal processor energy distribution f'/F for high-speed FDLVSP filter bank frequency domain laser frequency domain signal frequency of 25.0 function of signal-to-noise high-speed burst counter increase input f'/F Input O High-speed laser velocimeter signal mean oscillation frequency measured f'/F measurement accuracy microprocessor nal burst output particle photomultiplier photon correlator photons per burst quency reference clock frequency residual f'/F samples per cycle Schematic diagram setup phase signal amplitude Signal burst containing signal burst detection signal detection signal-to-noise ratio photons/burst Simulation comparisons slew rate standard deviation threshold transient recorder velocimeter signal processor wideband frequency tracker yield zero crossing detector