Spectrogram processing of laser vibration data

Alan L. Kachelmyer; Kenneth I. Schultz

doi:10.1117/12.157117

15 October 1993 Spectrogram processing of laser vibration data

Alan L. Kachelmyer, Kenneth I. Schultz

Proceedings Volume 1936, Applied Laser Radar Technology; (1993) https://doi.org/10.1117/12.157117
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

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.

Citation Download Citation

Alan L. Kachelmyer and Kenneth I. Schultz "Spectrogram processing of laser vibration data", Proc. SPIE 1936, Applied Laser Radar Technology, (15 October 1993); https://doi.org/10.1117/12.157117

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