【摘要】 针对浅地层剖面仪和侧扫声呐这2种声呐系统探讨性地提出了"两步法"的性能检测和评价方法:1)声学物理参数检测:分析了与浅地层剖面仪和侧扫声呐系统性能相关的关键声学物理参数(声源级、频率/频谱、脉冲长度、波束角或开角),并提出了在消声水池中测定这些参数的方法;2)实际探测性能评价:分析了与浅地层剖面仪和侧扫声呐系统性能相关的实际探测效果评价指标,并提出了通过海上试验来检测和评价这些指标的方法。最后对建设具备高效消声性能的大型试验水池,建设海底标准地层检测场和海底标准目标物检测场以真正实现设备性能的检定应做的后续工作进行了讨论。更多还原

【Abstract】 The sub-bottom profiler and side-scan sonar are the most commonly used sonar systems in oceanography field.With the wide application of them,it is vital to promulgate standards and specifications for calibration and testing of such acoustic detecting systems.Based on our practice,the "two-step" detection performance test and evaluation methods are presented for these two kinds of sonar systems.The first step is the APT(acoustic parameter test)which is for the test of acoustic performance parameters of sonar,such as source level,frequency spectrum,pulse length,beam angle,etc.The second step is the DPE(detection performance evaluation)which is for the evaluation of the actual detection performance at sea,such as resolution,penetration depth,effective range,etc.The APT methods and DPE methods for the subbottom profiler and side-scan sonar are detailed and respectively discussed.However,in order to test and evaluate the sonar systems accurately,it is necessary to build a large-scale testing pool with highly efficient muffler performance,a test field with standard seabed layers and an underwater detecting field with standard targets.更多还原