MOVING RANDOM SURFACES AND CORRELATION ANALYSIS

Authors
  1. Burke, M.J.
Corporate Authors
Communications Research Centre, Ottawa ONT (CAN)
Abstract
Five models of moving random surfaces with known velocity and known correlation function are described. The random surfaces are formed from an infinite set of plane waves with decorrelation arising from random temporal and spatial changes. It is shown that, if there are random spatial changes in the direction of motion, then speeds derived by the full correlation method of Briggs et.al.(1950) will be less than the true speed of the surface. Random spatial changes at right angles to the direction of motion are necessary if the axial ratio of the correlation ellipse is to be finite. From modeling of a multi-antenna array, it is shown that the correlation ellipse is the average of the various shapes within the surface as argued by Burke(1975). If temporal-series based on the various models are subjected to a high-pass filter before correlation analysis, the correlation speeds increase in value.
Report Number
1384 —
Date of publication
15 May 1985
Number of Pages
53
DSTKIM No
85-02621
CANDIS No
47419
Format(s):
Hardcopy;Originator's fiche received by DSIS

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