Video processor for distance measuring equipment

Details Video processor for distance measuring equipment Video processor for distance measuring equipment

1977-06-07

1978-11-07

Buczinski, S. C.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 5DP, 343 65LC, G01S 902, G01S 956

Patent

active

041248503

ABSTRACT:
A video processor for Distance Measuring Equipment in which all timing functions including fixed delays are performed by digital counters counting clock pulses from a highly stable source. Search and track operations are conducted by starting a memory counter by a reply from a responser and stopping the memory counter at a time corresponding to maximum range. On a succeeding interrogation cycle the memory counter is started prior to the time a reply at zero range would be received. In this cycle the memory counter begins count with the count it contained when stopped during the previous cycle; the memory counter counts until it reaches a number corresponding to maximum range, stops and initiates a range gate. A reply within the range gate causes the range gate to be repeated at the same time in the following interrogation cycle. A sufficient number of replies within the range gate cause tracking operation to begin. A velocity memory provides continuing tracking during temporary loss of reply signals.

REFERENCES:
patent: 3412400 (1968-11-01), Aker
patent: 3539978 (1970-11-01), Stedtnitz
patent: 3641572 (1972-02-01), Lundgreen et al.
patent: 3666367 (1972-05-01), Farnsworth et al.
patent: 3680097 (1972-07-01), Huntsinger
patent: 3792471 (1974-02-01), Kingsbury

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