Source Level vs. Bandwidth Study: Call-Up Against the Noise Monitoring Standing Offer

PDF

Authors
  1. Beslin, O.
  2. Hood, J.
  3. Glessing, B.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN);MacDonald Dettwiler and Associates Ltd, Dartmouth NS (CAN)
Abstract
This report documents the work done to analyze Low Frequency Active (LFA) Frequency Modulated (FM) pulse recordings from the Directional Acoustic Sensor Module (DASM) segment of the Towed Integrated Active Passive Sonar (TIAPS). The pulses were transmitted during BASE’04, a multi-national LFA multistatic trial conducted in the Mediterranean Sea in the summer of 2004. This work included minor enhancements to the Software Tools for Analysis and Research (STAR) software suite. The STAR suite was then used to perform data analysis, including test and measurement tasks. Coherent processing using the full replica as a matched filter provided better signal-to-noise ratio (SNR) performance over sub-band replica and incoherent processing for this dataset. An average 20 dB SNR gain for full replica correlation over energy time indicator (ETI) processing was obtained on real data, while a 30 dB gain was expected. This gain is expected to increase to ~24 dB once ORing loss is removed. Sub-band replica correlation performed approximately 6 dB poorer than full replica processing. These results were obtained by measuring the direct arrival of five real data pings.

Il y a un résumé en français ici.

Report Number
DRDC-ATLANTIC-CR-2005-018 — Contractor Report
Date of publication
01 Nov 2005
Number of Pages
58
DSTKIM No
CA027080
CANDIS No
525114
Format(s):
CD ROM

Permanent link

Document 1 of 1

Date modified: