1
Royden C Sanders Jr, Martin R Richmond, Alfred J Cann: Satellite communications system incorporating ground relay station through which messages between terminal stations are routed. Sanders Associates, Louis Etlinger, Joseph E Funk, January 16, 1979: US04135156 (158 worldwide citation)

A satellite relay communications system includes a ground relay station arranged so that each message from one subscriber to another is relayed by the satellite relay to the ground relay, processed by the ground relay and then transmitted to the second subscriber by way of the satellite relay. Proce ...


2
Martin R Richmond: Jamming signal cancellation system. Lockheed Sanders, David W Gomes, November 8, 1994: US05363104 (33 worldwide citation)

Improved radar system performance in a jamming environment is achieved by detecting the AM difference frequency produced by the beating of the desired radar signal with the jamming signal and applying same to one input of a balanced modulator while simultaneously applying the received signal (contai ...


3
Martin R Richmond, Morton E Goulder: Radar and IFF system. Systems Information and Electronic Systems Integration, Daniel J Long, July 16, 2002: US06420995 (18 worldwide citation)

A silent radar system which detects a target and its position without the countermeasure operator located at the target being able to detect the presence of the radar. The silent radar operates by transmitting signals with specific characteristics which allow optimum processing by the radar while ta ...


4
Martin R Richmond, Mark A Hayner: Pneumatic time delay valve. Sanders Associates, Louis Etlinger, Richard I Seligman, March 3, 1987: US04646644 (16 worldwide citation)

A pneumatic time delay valve primarily adapted for use in the ejection system of electronic or optical countermeasure devices and the like wherein an explosive squib is employed to create a momentary charge of high pressure gas used to depress the firing pin on the device to activate the device and ...


5
Martin R Richmond, Mark A Hayner: Pneumatic time delay valve. Sanders Associates, Richard I Seligman, January 5, 1988: US04716930 (15 worldwide citation)

A pneumatic time delay valve primarily adapted for use in the ejection system of electronic or optical countermeasure devices and the like wherein an explosive squib is employed to create a momentary charge of high pressure gas used to depress the firing pin on the device to activate the device and ...


6
Martin R Richmond: Expendable jammer. BAE Systems Information and Electronic Systems Integration, Daniel J Long, Robert K Tendler, August 6, 2002: US06429800 (14 worldwide citation)

An expendable jammer is ejected as a decoy from a target in which the jammer includes a single port, keyed primed oscillator which is primed with the low level signal received at its antenna. The priming signal is injected directly into the tank circuit of the oscillator which is rapidly turned on a ...


7
Martin R Richmond: Jamming signal cancellation system. Sanders Associates, Louis Etlinger, Richard I Seligman, October 24, 1978: US04122452 (5 worldwide citation)

Improved radar system performance in a jamming environment is achieved by applying the received signal containing both the desired radar signal and a higher level FM jamming signal to a radar receiver only during the time when the instantaneous frequency of the jamming signal is not at or within pre ...


8
Martin R Richmond, William R Hutchins: Proximity sensing apparatus. Raytheon Company, Richard M Sharkansky, Joseph D Pannone, May 3, 1977: US04021803 (4 worldwide citation)

This invention relates to a proximity sensing apparatus for energizing a control circuit whenever the distance between two objects moving relative to one another at an angle other than 180.degree. becomes a minimum, and more particularly, relates to a proximity sensing apparatus operating on the zer ...


9
Martin R Richmond: On board jammer. Daniel J Long, July 16, 2002: US06420992 (3 worldwide citation)

A method and apparatus for jamming radar and other electromagnetic signals is disclosed in which the jammer includes a single port, keyed primed oscillator which is primed with the low level signal received at its antenna. In one embodiment the priming signal is gradually shifted in frequency to int ...


10
Martin R Richmond, Alfred J Cann: Attenuator. Sanders Associates, Louis Etlinger, Richard I Seligman, April 10, 1979: US04149123 (1 worldwide citation)

Attenuation of a signal is achieved by biphase modulating the signal with an asymmetrical duty factor rectangular wave. In one embodiment of the invention an input signal is applied to a phase reversal switch having as its second input thereto an asymmetrical duty factor rectangular wave.