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奥斯汀的得克萨斯大学应用研究实验室(ARL)正在研究用作非线性声学测量的试验设备。这种设备被设想为一个试验台,可以进行下述三种基本的非线性声学实验:①利用现有的或容易装制的换能器做基本概念性实验;②测试现有的舰用装备,以确定是否能将非线性方式与一般线性系统结合起来;③测试正在研制的舰用装备样机。这份终结报告介绍已经完工的非线性试验台第Ⅰ部分测试设备。此设备包括二个40瓦激励级,二个4千瓦功率放大器(发射机),二个15千瓦功率放大器,二个信号发生通道,一个由前置放大器、滤波器、存储示波器、采样数字电压表和定时单频脉冲发生器选通门组成的接收系统。各部分均可见于方框图和照片。Hewlett-Packard 公司 US ASCⅡ母线联接系统经过鉴定后,被用作控制非线性声纳试验台自动部分的联接系统。本文还简要介绍了用作阻抗匹配和功率分配—组合网络的传输线变压器,以及一组一般的电抗匹配网络解。
The University of Texas Applied Research Laboratory (ARL) in Austin is studying the test equipment for nonlinear acoustic measurements. This equipment is conceived as a test bed and can perform the following three basic non-linear acoustic experiments: (1) basic conceptual experiments using existing or easily fabricated transducers; (2) testing of existing marine equipment To determine whether the nonlinear system can be combined with the general linear system; ③ test prototype is being developed ship equipment. This final report describes the completed non-linear test bench Part I test equipment. The device includes two 40-watt excitation stages, two 4-kilowatt power amplifiers (transmitters), two 15-kilowatt power amplifiers, two signal-generating channels, a digital preamplifier, filter, storage oscilloscope, And timing single-frequency pulse generator gate composed of the receiving system. Each section is visible in the block diagram and photo. The Hewlett-Packard Company US ASC II Busbar Linkage System was certified as a link system to control the automated part of a nonlinear sonar test bed. This article also briefly describes the transmission line transformers used as impedance matching and power distribution-combining networks, as well as a general set of impedance matching networks.