Communications: directive radio wave systems and devices (e.g. – Radar transponder system – With telemetry
Patent
1983-10-19
1988-08-16
Tubbesing, T. H.
Communications: directive radio wave systems and devices (e.g.,
Radar transponder system
With telemetry
342 60, 375 23, G01S 1386
Patent
active
047647698
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.
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Fleming, III Robert F.
Hayworth Robert G.
Hwang James G.
Russell, Jr. Ray E.
Gregory Bernarr Earl
Tubbesing T. H.
Vega Precision Laboratories, Inc.
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