| 摘要 |
<p>The invention is a method of measuring transfer functions of a physical system (2) using a wideband excitation signal. LPWB waveform synthesizer module (11) synthesizes a programmable wideband waveform, and up-converts the synthesized waveform to the center frequency of interest. Waveform synthesizer module (11) causes antenna (5) to broadcast a signal which excites system (2) under test. LPWB receiver modules (12a, 12b) measure respectively the excitation signal to the system input (1) and responsive signal from the system output (3). LPWB receiver modules (12a, 12b) down-convert, digitize, and store the received wideband signal about the center frequency of interest. The stored data is then relayed to control computer (14) via a digital telemetry link (15).</p> |
