On-line identification of sensory systems using pseudorandom binary noise perturbations

A Pseudorandom Binary Noise Ultrasonic System

The random noise ultrasonic system represents the state-of-the-art in terms of sensitivity and resolution for ultrasonic NDE systems. The principle impediment to its use in the field is the lack of real-time inspection capability. If a pair of pseudorandom binary noise sources are substituted for the white noise source in the random noise system, a real-time capability is achieved. An instrumen...

On Pseudorandom Binary Lattices

On p-pseudorandom binary sequences

where the maximum is taken over all a, b, t ∈ IN such that 1 ≤ a ≤ a + (t − 1)b ≤ N , while the correlation measure of order k of EN is defined as Research of the second author is partially supported by Hungarian National Foundation for Scientific Research, Grant no. T043623. This paper was written while the second author was visiting the Institut de Mathématiques de Luminy (UPR 9016 CNRS), Mar...

Off-line synchronization of measurements based on a common pseudorandom binary signal.

Postprocessing (or off line) synchronization methods rely on some overlap of information between two or more simultaneous measurements. The methods vary in the amount of explicit data needed to record the overlap: on the one hand, the full recording of an (absolute) time source for each measurement or, on the other hand, the reliance on information overlap of different parameters in the measure...

Constructions of Pseudorandom Binary Lattices

Three constructions for binary lattices with strong pseudorandom properties are given. These constructions are the two dimensional extensions and modifications of three of the most important one dimensional constructions. The upper estimates for the pseudorandom measures of the binary lattices constructed are based on the principle that character sums in two variables can be estimated by fixing...