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首页> 外文期刊>IEEE Transactions on Instrumentation and Measurement >The dynamic range tester: a multipurpose 'real-world' signal simulator for correlator testing and other applications
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The dynamic range tester: a multipurpose 'real-world' signal simulator for correlator testing and other applications

机译：动态范围测试仪：用于相关器测试和其他应用的多功能“真实世界”信号模拟器

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摘要

The dynamic range tester (DRT) is a patented prototype system that functions as a dual-channel, precision signal-to-noise ratio (SNR) generator. It was designed for testing high-speed acousto-optic correlators, and can be used for many applications requiring "real-world" test signals. The DRT is a convenient tool for generating two highly isolated, noisy test signals from a single signal source, to simulate two antennas receiving the same signals. By splitting a user-supplied signal into two copies and adding wideband, random noise to each portion, the DRT generates two noisy test signals, one in each channel. The noise generated in one channel of the DRT is uncorrelated and isolated from the noise generated in the other channel by approximately 90 dB. The correlated (signal) and uncorrelated (noise) parts of the test signals are each variable over a wide dynamic range. The DRT is useful for a variety of testing and demonstration purposes: generally, for evaluating a system's tolerance to noisy inputs and specifically, for making measurements of dynamic range, processing gain, and frequency resolution of a correlator, spectrum analyzer, or other signal processing system. The DRT can also use two signal sources, one in each noisy channel, to simulate two antennas receiving different signals. This configuration of the DRT may be useful for performing interference and bandwidth testing of signal processing hardware. The patented design is extendible to all frequency ranges, perhaps for producing useful instrumentation in such fields as telecommunications, telemetry, biomedical engineering, etc.
机译：动态范围测试仪（DRT）是获得专利的原型系统，可充当双通道，精密信噪比（SNR）发生器。它设计用于测试高速声光相关器，可用于许多需要“真实”测试信号的应用。 DRT是一种方便的工具，可从单个信号源生成两个高度隔离的，有噪声的测试信号，以模拟接收相同信号的两个天线。通过将用户提供的信号分成两份并向每个部分添加宽带随机噪声，DRT会生成两个有噪声的测试信号，每个通道一个。 DRT的一个通道中产生的噪声是不相关的，与另一通道中产生的噪声相隔大约90 dB。测试信号的相关（信号）和不相关（噪声）部分在很大的动态范围内都是可变的。 DRT可用于各种测试和演示目的：通常，用于评估系统对噪声输入的容忍度，尤其是用于测量动态范围，处理增益和相关器，频谱分析仪或其他信号处理的频率分辨率的情况系统。 DRT还可以使用两个信号源（每个噪声通道一个）来模拟接收不同信号的两个天线。 DRT的此配置对于执行信号处理硬件的干扰和带宽测试可能有用。获得专利的设计可扩展到所有频率范围，可能用于在电信，遥测，生物医学工程等领域生产有用的仪器。

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