相干脉冲注入宽带光谱仪的带通定标
Bandpass calibration of a wideband spectrometer using coherent pulse injection
摘要：
我们提出了一个相对简单的时域方法来确定系统的带通响应，通过注入纳秒脉冲和捕获系统电压输出。持续时间为亚纳秒的脉冲包含幅度几乎恒定的所有频率分量，最高可达1 GHz。因此，该方法可以准确地确定系统对宽带信号的带通响应。在这种脉冲响应方法的一种新的变型中，脉冲的训练被相干地累积，从而用简单的系统提供精确的校准。的基本概念是使用一个脉冲发生器，累加器设置实现在一个疯人院板，这是一个高速数字信号处理单元。2013年10月2日至13日，帕克斯射电望远镜使用了相同的系统，我们展示了其强大的诊断能力。我们还提出了一些初步的测试数据，从这个实验。
英文摘要：
We present a relatively simple time domain method for determining the bandpass response of a system by injecting a nanosecond pulse and capturing the system voltage output. A pulse of sub-nanosecond duration contains all frequency components with nearly constant amplitude up to 1 GHz. Hence, this method can accurately determine the system bandpass response to a broadband signal. In a novel variation on this impulse response method, a train of pulses is coherently accumulated providing precision calibration with a simple system. The basic concept is demonstrated using a pulse generator-accumulator setup realised in a Bedlam board which is a high speed digital signal processing unit. The same system was used at the Parkes radio telescope between 2-13 October 2013 and we demonstrate its powerful diagnostic capability. We also present some initial test data from this experiment.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
