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Mark 3 correlator hardware and softwareThe Mark 3 correlator system is described in some detail. The correlator system is based on a modular philosophy. Each correlator module independently processes the data from one track pair. Therefore, 28 modules are necessary to complete a full one baseline processor and 84 modules for a full 3 baseline processor. Each correlator module has two interfaces: (1) data and clock from each of the two tracks to be correlated and (2) Computer Automated Measurement and Control (CAMAC) dataway interface to the computer. The processor is organized around the IEEE CAMAC standard architecture, housing 15 correlator modules in each of 6 crates. This allows one pass processing of a full 3 baseline 28 track observation or a 6 baseline (4 station) 14 track observation. The correlator architecture allows easy expansion for up to 8 stations. The computer system is an HP 1000 system utilizing a 16 bit minicomputer with disc and tape peripherals. The processing software is also organized in a modular fashion with many independent but cooperative programs controlling the operation of the Mark 3 processor. Processing time through the correlator is normally real time or faster, with graphics displays providing real time monitor and control of the processing operation.
Document ID
19800020326
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Whitney, A. R. (Northeast Radio Observatory Corp. Westford, MA, United States)
Date Acquired
August 10, 2013
Publication Date
July 1, 1980
Publication Information
Publication: NASA. Goddard Space Flight Center Radio Interferometry
Subject Category
Earth Resources And Remote Sensing
Accession Number
80N28827
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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