| 摘要 |
The objective of the present invention is to use a simple circuit configuration and simple signal processing to provide a pulse radar device with which it is possible to reduce the impact of local signal carrier leaks on a received signal, and which makes it possible to perform high precision angle measurement using a multi-beam system. In order to measure the angle of a target object, a pulse radar device (100) is provided with at least two reception antennas (121a to 121d), and a reception circuit (120) is provided with a signal change-over switch (123) for selectively switching between received signals received by the reception antennas (121a to 121d). The received signal contains a local signal leak component, and a DC level of the received signal varies concomitant with the switching of the signal change-over switch (123). In order to eliminate the impact of such DC level variations, high-pass filters (130a and 130b) are disposed between a mixer (125) and a frequency analyzer (126). |
