Encoding apparatus and method for a position coded pulse communi

Details Encoding apparatus and method for a position coded pulse communi Encoding apparatus and method for a position coded pulse communi

1983-10-19

1987-05-26

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

244190, 375 23, 34087024, 340696, 370 8, 342 88, H04Q 914, G01S 728

Patent

active

046689508

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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