Title :
A test for spatial stationarity and applications
Author :
Ephraty, A. ; Tabrikian, J. ; Messer, H.
Author_Institution :
Dept. of Electr. Eng., Tel Aviv Univ., Israel
Abstract :
This paper presents a test which accepts or rejects, based on the data collected by an array of N sensors, the hypothesis that the sampled tempo-spatial field is spatially stationary. The proposed test is applicable to arrays in an arbitrary but known 3-dimensional geometry. It is based on the estimated second order spatial cumulant spectrum matrix, which is theoretically diagonal for a stationary spatial field. We show how the proposed test can be used for robust detection of a source in shallow water
Keywords :
array signal processing; matrix algebra; signal detection; signal sampling; sonar arrays; spectral analysis; 3D geometry; robust detection; sampled tempo-spatial field; second order spatial cumulant spectrum matrix; shallow water; spatial stationarity; spatially stationary; test; Acoustic signal detection; Acoustic testing; Additive noise; Detectors; Geometry; Noise robustness; Sensor arrays; Sensor systems; System testing; Water resources;
Conference_Titel :
Statistical Signal and Array Processing, 1996. Proceedings., 8th IEEE Signal Processing Workshop on (Cat. No.96TB10004
Conference_Location :
Corfu
Print_ISBN :
0-8186-7576-4
DOI :
10.1109/SSAP.1996.534903
