Interference-proof reception of radio signals using frequency ho

Details Interference-proof reception of radio signals using frequency ho Interference-proof reception of radio signals using frequency ho

1967-05-24

1990-06-19

Buczinski, Stephen C.

Pulse or digital communications

Repeaters

Testing

375 45, 375 58, 375 91, 375100, 380 34, H04L 900

Patent

active

049359401

ABSTRACT:
Two interference-proof techniques are shown for detecting binary radio sils transmitted by frequency hopping techniques. In the first, the decision as to which type of binary signal is being received is made by first comparing the energy on each mark and space channel with the energy contents of the same channels during a preceding baud which is blank except for jamming and interference, thus obtaining mark and space energy differences. The larger of these differences determines the type of signal received. In the other technique, the energy contents of both mark and space channels are compared with the energies received simultaneously on a nearby blank channel.

REFERENCES:
patent: 2897269 (1959-07-01), Alphenaar et al.

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