Andrew D Ritzie

39848353, Oct 5, 1976

May 12, 1975

5/576604

Gerald Stanley Kaplan - Trenton NJ
Andrew David Ritzie - Delran NJ

RCA Corporation - New York NY

G01S 956

343 65SS

A homodyne communication system comprising an interrogating unit and a plurality of responsive remote units wherein a continuous wave RF signal is transmitted from the interrogating unit to illuminate a remote unit. The remote unit causes a return (reply) signal to be transmitted or reflected back to the interrogating unit. A sample of the transmitted (interrogation) signal is mixed with the return signal. Amplitude nulls in the mixer output signal at given relative phase relationships between interrogation and reply signals, are substantially eliminated by selectively shifting the relative phase of the signals. Also disclosed are a homodyne communication system utilizing phase modulation to impress FSK signaling on the reply signal and an automatic vehicle location system utilizing the present invention.

40177190, Apr 12, 1977

Dec 18, 1975

5/642111

Gerald Stanley Kaplan - Lawrenceville NJ
Andrew David Ritzie - Delran NJ

RCA Corporation - New York NY

G06F 739
H03K 500

2351503

Circuit and method for spacing the output signals from a binary rate multiplier by adjusting the rate of the internal clock of the binary rate multiplier to a value approximating (N+1) times f. sub. 0 where N represents the multiplier of the input frequency f. sub. The output signals thereby produced are substantially evenly spaced at a rate N times f. sub.

39745015, Aug 10, 1976

Dec 26, 1974

5/536559

Andrew David Ritzie - Delran NJ

RCA Corporation - New York NY

G01S 924

343 14

An adaptive parameter signal processor for continuous wave radar ranging systems which provides non-quantized measurements of range. Means are provided to select a suitable portion of the difference frequency waveform, excluding any phase reversal. The period of the difference frequency is measured using the selected portion of the waveform and is converted to frequency. The frequency is, in turn, converted to range. The system parameters are automatically adjusted in accordance with the difference frequency waveform. Override means are also disclosed for adjusting the system at a faster rate in response to predetermined conditions such as when an abrupt decrease in range occurs.