書誌事項
- タイトル別名
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- Target Ranging in Water by Using an FM-Sensitivity-Compensated Signal and Pulse Compression
- FM カンド ホセイ シンゴウ ト パルス アッシュク オ ヘイヨウ シタ スイチュウ キョリ ソクテイホウ
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抄録
An approach to high-accuracy target ranging by using an ultrasonic pulse echo with pulse compression is discussed. To acquire a receiving signal with a broader bandwidth and flatter spectrum, we proposed an AM-sensitivity-compensated signal, which was calculated by inversing the spectrum of the ultrasonic response function containing the sensitivities of the transmitter and receiver. Furthermore, to acquire a receiving signal with higher signal-to-noise ratio, we propose an FM-sensitivity-compensated signal, which is a signal with an identical amplitude and a spectral amplitude property that compensates for the unevenness of the receiving signal brought forth by the ultrasonic transfer function. The FM-sensitivity-compensated signal is calculated by non-linear frequency modulation according to the spectral amplitude of the AM-sensitivity-compensated signal. In this study, we examined the accuracy of target ranging in water experimentally by using an FM-sensitivity-compensated signal with pulse compression. The result verifies that the target ranging by using an FM-sensitivity-compensated signal is efficient even when the signal-to-noise ratio is low.
収録刊行物
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- 海洋音響学会誌
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海洋音響学会誌 38 (2), 61-71, 2011
特定非営利活動法人 海洋音響学会
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詳細情報 詳細情報について
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- CRID
- 1390282679343564672
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- NII論文ID
- 130005129813
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- NII書誌ID
- AN10299394
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- ISSN
- 18816819
- 09165835
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- NDL書誌ID
- 11066211
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- 抄録ライセンスフラグ
- 使用不可