Arrangement for measuring the lag between two timed signals by e

Details Arrangement for measuring the lag between two timed signals by e Arrangement for measuring the lag between two timed signals by e

1976-10-05

1977-10-11

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343100CL, G01S 908

Patent

active

040538885

ABSTRACT:
An arrangement for measuring by correlation the lag produced by the transmission of a coded signal through a delaying medium and which permits a high signal-to-noise ratio and high accuracy. The received coded signal is applied to two correlators followed by a subtractor to form a discriminator circuit utilized to lock the frequency of a generator which provides two reference coded signal utilized respectively for correlation and to form an automatic tracking loop. The lag measurement is obtained by state-decoding of the transmission coded signal and of one of the reference coded signal and by pulse counting at a period sub-multiple of the bit period.

REFERENCES:
patent: 3208065 (1965-09-01), Gutleber et al.
patent: 3329956 (1967-07-01), Caspers
patent: 3450869 (1969-06-01), Wiley et al.
patent: 3518415 (1970-06-01), Gutleber
patent: 3573819 (1971-04-01), Mason et al.
patent: 3721986 (1973-03-01), Kramer
patent: 3906213 (1975-09-01), Meriaux et al.

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