Ray L Russell

US Patent:

47647698, Aug 16, 1988

Filed:

Oct 19, 1983

Appl. No.:

6/543522

Inventors:

Robert G. Hayworth - Vienna VA
Ray E. Russell - Vienna VA
Robert F. Fleming - Vienna VA
James G. Hwang - Vienna VA

Assignee:

Vega Precision Laboratories, Inc. - Vienna VA

International Classification:

G01S 1386

US Classification:

342 50

Abstract:

Pulse position coding is used to transmit several channels of data from a ground radar transmitter to a receiver in an airborne, remotely-piloted vehicle. The system is designed to ignore interfering pulses, especially those which are synchronized with the transmitter's PRF, by combining a number of noise reduction devices. These include the redundant transmission of address and channel information, the transmission of true and complemented data, the tracking of channels transmitted in a predetermined order, developing an interference count to recognize synchronous pulses, comparing data received for a given channel with data subsequently received for that channel, the use of windows around the expected positions of pulses, and the use of parity. There is also a novel programming arrangement which enables several programs to be stored in a reduced amount of memory space.

US Patent:

46689508, May 26, 1987

Filed:

Oct 19, 1983

Appl. No.:

6/543421

Inventors:

Ray E. Russell - Vienna VA
Robert G. Hayworth - Vienna VA

Assignee:

Vega Precision Laboratories, Inc. - Vienna VA

International Classification:

H04Q 914
G01S 728

US Classification:

34082565

Abstract:

Pulse position coding is used to transmit several channels of data from a ground radar transmitter to a receiver in an airborne, remotely-piloted vehicle. The system is designed to ignore interfering pulses, especially those which are synchronized with the transmitter's PRF, by combining a number of noise reduction devices. These include the redundant transmission of address and channel information, the transmission of true and complemented data, the tracking of channels transmitted in a predetermined order, developing an interference count to recognize synchronous pulses, comparing data received for a given channel with data subsequently received for that channel, the use of windows around the expected positions of pulses, and the use of parity. There is also a novel programming arrangement which enables several programs to be stored in a reduced amount of memory space.