CROSS-SPECTRUM VERSUS SPECTRUM FOR NOISE DIRECTIONALITY MEASUREMENT.
Abstract
The report presents a derivation showing that, given two crossed linear arrays, the cross-spectrum of the array outputs is a better estimator of the noise field directionality than is the spectrum of the sum of the array outputs. When the two arrays each have a 10-degree beamwidth and sidelobe level of 0.05, the cross-spectrum is a tolerable estimate of the noise power from some particular direction, if the power from that direction exceeds the general background level by about 7 dB. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 06, 1966
- Accession Number
- AD0652622
Entities
People
- Peter Hirsch