Communications: directive radio wave systems and devices (e.g. – With particular circuit – Digital processing
Patent
1996-05-28
1997-12-16
Pihulic, Daniel T.
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
Digital processing
G01S 1394
Patent
active
056990685
ABSTRACT:
A doppler video signal conditioning circuit comprising first, second and rd buffers which respectively receive a voltage controlled oscillator signal, a second intermediate frequency signal and a second local oscillator signal from a missile' radar receiver. The buffered voltage controlled oscillator, second intermediate frequency and second local oscillator signals are then supplied to a doppler processing circuit. The doppler processing circuit processes these signals, providing at its output a reconstructed doppler video signal which includes a marker which is 20 kHz above the frequency the missile's radar is tracking. The doppler processing circuit provides the reconstructed doppler video signal to an analog-to-digital converter. The analog-to-digital converter digitizes the reconstructed doppler video signal before supplying the digitized signal to a frame controller. The frame controller assembles the digital data of the reconstructed doppler video signal into a plurality of telemetry frames with each frame having 1024 eight bit words. The eight bit words of each telemetry frame are then supplied to a parallel to serial shift register which converts each word from a parallel format to a serial format. The frame controller also generates timing signals and control signals for the analog-to-digital converter and the serial to parallel shift register.
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patent: 3737900 (1973-06-01), Vehrs
patent: 3898658 (1975-08-01), Jensen et al.
patent: 4003051 (1977-01-01), Fitzgerald et al.
patent: 4780837 (1988-10-01), Namekawa
patent: 5150126 (1992-09-01), Knepper et al.
Kalmbaugh David S.
Pihulic Daniel T.
Sliwka Melvin J.
The United States of America as represented by the Secretary of
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