Direction finding performance analysis for signal data collected during the Storming Bear exercise

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Authors
  1. Patenaude, F.
  2. Wang, S.
  3. Kozminchuk, B.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN);Communications Research Centre, Ottawa ONT (CAN);Intrinsix Corporation, Kanata Ont (CAN)
Abstract
This report presents results for the direction finding (DF) performance obtained using data collected by the Military Digital Analysis System (MiDAS) in November, 1999 during the Storming Bear Army exercise. MiDAS is a software radio based communications EW sensor being developed co-operatively by the Communications Research Center (CRC) and Defence Research Establishment Ottawa (DREO) under the auspices of Defence Research and Development Canada (DRDC) project LIEWA (Land Intelligence Electronic Warfare Automation). The work described in this report addresses approaches for optimizing the DF processing for signals from tactical frequency hopping radios. The DF approach used in MiDAS is based on the Butler matrix approach in combination with a frequency domain implementation of a digital filter bank receiver. Two closely related practical issues concerning the signal processing approach used to generate DF results were addressed. One issue concerns the FFT processing used to obtain the relative phase information used to compute the DF results. The data samples from the Butler antenna array can be divided into non-overlapping or overlapping data blocks, resulting in the non-overlapped FFT or the overlapped FFT. The overlapped FFT is theoretically preferable to the non-overlapped FFT, although at a higher computational cost. TRUNCATED

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Keywords
Butler Matrix;MiDAS (Military Digital Analysis System);LIEWA (Land Intelligence Electronic Warfare Automation);Digital filter bank receivers;Digital receivers
Report Number
DREO-TM-2001-031 — Technical Memorandum
Date of publication
01 Feb 2001
Number of Pages
41
DSTKIM No
CA011498
CANDIS No
516052
Format(s):
Hardcopy;Document Image stored on Optical Disk

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