A FAST FOURIER TRANSFORM (FFT) BASED SONAR SIGNAL PROCESSOR

Authors
  1. Trider, R.C.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
The design for a convolution processor is presented, which employs a single highly parallel implementation of the FFT algorithm. This processor is eminently suited for real-time matched filtering of coded signals encountered in sonar systems. Computer simulations have shown that this processor, which uses fixed point arithmetic and modest word sizes can efficiently handle signals with multiple targets and relatively large doppler shifts. The parallel architecture provides a throughput rate sufficient for computing both forward and inverse transforms in the one processor. The system is flexible permitting frequency domain adaptive beamforming, attractive in many sonar applications.
Report Number
DREA-77-2 —
Date of publication
15 Mar 1977
Number of Pages
9
Reprinted from
IEEE Trans, Speech, and Signal Processing, vol ASSP-26, no 1, 1978, p 15-20
DSTKIM No
78-02775
CANDIS No
83460
Format(s):
Hardcopy;Originator's fiche received by DSIS

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