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PAL识别、消色检波电路的研究与调试
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作者 张维琛 石秀伦 +1 位作者 蒋妙法 唐伯良 《上海大学学报(自然科学版)》 CAS CSCD 1995年第5期584-590,共7页
本文简要说明了PAL识别器、消色检波器的工作原理和识别、消色信号产生的方法.通过对消色识别检波器的输出讨论,指出可用计算机来判别供给(R-Y)、(B-Y)同步解调器的基准副载波的相位是否正确.
关键词 PAL识别 消色检波电路 彩电 电视信号
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Theoretical analysis and experimental research on port/starboard discrimination in towed line array
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作者 DU Xuanmin,ZHU Daizhu,ZHAO Rongrong,YAO Lan (Shanghai Marine Electronic Equipment Research Institute Shanghai 200025) 《Chinese Journal of Acoustics》 2001年第1期30-43,共14页
The theoretical analysis and experimental research on Port/Starboard (P/S) discrimination in towed line array are proposed. Two methods resolving the P/S ambiguity with hydrophone triplets are introduced. By processi... The theoretical analysis and experimental research on Port/Starboard (P/S) discrimination in towed line array are proposed. Two methods resolving the P/S ambiguity with hydrophone triplets are introduced. By processing experimental data, the theoretical analysis is verified. The processing algorithm is extended to broadband signal. The research results show that the method based on optimum beamforming with triplets can be used to remove the port/starboard ambiguity. Also because of the simplicity of the method, it is expected to be implemented in practical towed line array sonar. 展开更多
关键词 line Theoretical analysis and experimental research on port/starboard discrimination in towed line array
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