Auto covariance computer

Details Auto covariance computer Auto covariance computer

1983-08-16

1985-10-01

Thomas, James D.

Boots, shoes, and leggings

G06F 1520

Patent

active

045450250

ABSTRACT:
A laser velocimeter covariance processor which calculates the auto covariance and cross covariance functions for a turbulent flow field based on Poisson sampled measurements in time from a laser velocimeter. The device will process a block of data that is up to 4096 data points in length and return a 512 point covariance function with 48-bit resolution along with a 512 point histogram of the interarrival times which is used to normalize the covariance function. The device is designed to interface and be controlled by a minicomputer from which the data is received and the results returned. A typical 4096 point computation takes approximately 1.5 seconds to receive the data, compute the covariance function, and return the results to the computer.

REFERENCES:
patent: 3982101 (1976-09-01), Kalb et al.
patent: 4446531 (1984-05-01), Tanaka

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