15 October 1993 Spectrogram processing of laser vibration data
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Abstract
Laser vibration sensing has traditionally relied on the use of limiters and frequency modulation (FM) discriminators to process frequency modulated laser radar returns. The performance of the traditional FM discriminator approach can be limited by laser radar target characteristics and motion (speckle noise) and laser temporal coherence. In this paper we examine a novel laser vibration signal processor, a spectrogram processor, and compare its performance with the traditional limiter/FM discriminator signal processor used to process laser radar vibration measurements. The two processes are also compared using some laser radar measurement data.
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Alan L. Kachelmyer, Alan L. Kachelmyer, Kenneth I. Schultz, Kenneth I. Schultz, } "Spectrogram processing of laser vibration data", Proc. SPIE 1936, Applied Laser Radar Technology, (15 October 1993); doi: 10.1117/12.157117; https://doi.org/10.1117/12.157117
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