| 摘要 |
A multiple frequency continuous wave radar in which two Doppler signals derived from different transmitted frequencies are multiplied together and the product signal, after integration, controls a waveform generator which switches the transmitted frequency. The difference between the transmitted frequency is controlled to render the Doppler signals in quadrature and a range indicator responds universely to the frequency difference. Another Doppler signal is multiplied with one of the first two in a circuit which corrects ambiguity. |
