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2. Model for signal acquisition range for laser guided mortar

Author

Bryan J. Freeman, Charles Steadman, Ken Nichols, Charles H. Lange, David Lidsky, Jeff Warren, and Greg Thorsted

Subjects
Pulse repetition frequency, Materials science, business.industry, Amplifier, Detector, Pulse duration, Laser, Photodiode, law.invention, Optics, law, Detection theory, business, Pulse-width modulation
Abstract

A simple analytical model for the signal acquisition range for a laser guided mortar is presented. The signal consists of a repetitively pulsed laser of fixed pulse duration and fixed pulse repetition frequency. The pulses are detected by a seeker consisting of a quadrant photodiode and a trans-impedance amplifier. Noise is introduced from solar irradiance and from the detector/amplifier electronics. The model maximizes the acquisition range by optimizing trans-impedance amplifier circuit components. A comparison of integrating multiple low energy pulses (MPLD) versus detecting each pulse individually (conventional) is made.

Published
2010

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