LARGE-ARRAY SIGNAL AND NOISE ANALYSIS; TRAVELTIME ANALYSIS FOR LASA
Abstract
The report investigates practical aspects of generating high- resolution wavenumber spectra using subarray outputs of the Montana LASA. Especially studied are the variability of traveltime anomalies as a function of wavenumber, spectral window effect on crosspower estimates due to moveout across the array, and tradeoffs involved in a finite-length transform of array data. From this investigation, it is concluded that current data are insufficient to define a scheme adequately to correct wavenumber spectra calculations for traveltime anomalies. Also, because subarrays on the E and F rings of LASA generally exhibit larger traveltime residuals and less waveform similarity than do subarrays of the inner rings, subarrays on the E and F rings will not be included in high-resolution f-k spectra calculations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 20, 1967
- Accession Number
- AD0827078
Entities
People
- Peter R. Fenner
Organizations
- Texas Instruments