| 摘要 |
<p>An electromagnetic signal receiver and processor including an IFM receiver connected directly to an antenna for developing frequency data, a pulse status unit also directly connected to the antenna for developing, inter alia, a control signal when the pulse of the received electromagnetic signal exceeds a preselected width, and an IFT receiver which is connected to the antenna through a delay and a blanking network, in that order. The blanking network is controlled by the control signal, and is unblanked when the pulse width of the received electromagnetic signal is greater than the preselected width to allow the delayed signal to be processed by the IFT receiver. A memory stores selected frequencies for comparison with the frequency data developed by the IFM receiver. A further control signal is developed by the network, which compares the output of the IFM receiver and the frequency data stored in memory to control the blanking network.</p> |
