The effects of reduced configurations at (LASA) on detection signal-to- noise ratios. Technical report
The effects of varying the configuration of the Large Aperture Seismic Array (LASA) on the detection signal-to-noise ratio observed in the Seismic Data Analysis Center Detection Processor are discussed. It is shown that a configuration for the LASA of thirteen subarrays (A, B, C, and D rings) with 16 sensors per subarray produces an average loss of 0.2 + - 0.3 db (one standard deviation of the mean) from the current configuration of seventeen subarrays (A, B, C, D, and E rings) using sixteen sensors per subarray. Reducing the number of subarrays to nine (A, B, and C rings) with only 7 elements per subarray produces an average loss of 3.5 +- 0.3 db. These results are in general agreement with known results on variation of noise reduction and signal loss as a function of subarray and subarray sensor selection. (GRA)
- Research Organization:
- Teledyne Geotech, Alexandria, Va. (USA). Seismic Data Lab.
- NSA Number:
- NSA-33-025912
- OSTI ID:
- 4026446
- Report Number(s):
- AD/A--004991; SDAC-TR--74-7
- Country of Publication:
- United States
- Language:
- English
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