Versatile LDV burst simulator

Details Versatile LDV burst simulator Versatile LDV burst simulator

1977-12-16

1978-12-19

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01R 2700

Patent

active

041307950

ABSTRACT:
A device for generating burst signals that can be used to determine whether or not a laser doppler velocimeter is operating properly. A high frequency signal which corresponds to the information frequency of the laser doppler velocimeter is modulated by a low frequency signal to provide an envelope for the high frequency signal. The high frequency signal is modulated by the low frequency signal by any modulator means such as, for example, an analog multiplier. The low frequency signal is added to the modulated signal to provide pedestals for the resulting series of burst pulses. Then means are provided for selecting different combinations of these burst signals. Also means are provided for making the burst signals asymmetrical as desired. In addition, means are provided for varying the frequencies and amplitudes of the information, envelope and pedestal frequency signals in the burst signals.

REFERENCES:
patent: 3573634 (1971-04-01), Rachel
patent: 3593169 (1971-07-01), Markow
patent: 3629696 (1971-12-01), Bartlink
patent: 3873937 (1975-03-01), Lindstrum

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