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APPARATUS AND A METHOD FOR DETECTING A TARGET POSITION IN ACTIVE SONAR BASED ON FAST APPROXIMATE FOURIER TRANSFORM CAPABLE OF MINIMIZING DEGRADATION OF ABILITY
APPARATUS AND A METHOD FOR DETECTING A TARGET POSITION IN ACTIVE SONAR BASED ON FAST APPROXIMATE FOURIER TRANSFORM CAPABLE OF MINIMIZING DEGRADATION OF ABILITY
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机译:基于最小化能力退化的快速近似傅里叶变换的主动声纳目标位置确定装置及方法
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摘要
PURPOSE: An apparatus and a method for detecting a target position in active sonar based on fast approximate fourier transform are provided to reduce operation quantity while minimizing degradation of ability.;CONSTITUTION: An apparatus for detecting a target position includes a beam forming part(120), a quantization part(132), a frequency information operation part(134), and an extracting part(140). If a reflection signal is received from a target, the beam forming part generates a beam signal according to each azimuth from the received reflection signal. The quantization part makes quantization according to a size of the generated beam signal different. The frequency information operation part maps a fourier operator in a time domain of the beam signal, and extracts frequency information by adding the mapped value. The extracting part extracts a signal more than a specific critical value among the extracted frequency information, and detects a target position.;COPYRIGHT KIPO 2010
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