| 摘要 |
PURPOSE:To increase the longest detection distance and the effect covering area of IISLS by maing a deviation in output timing between the 1st and the 2nd transmitters are thus increasing the transmission outputs of a directional INT and a nondirectional SLS antenna. CONSTITUTION:Outputs P1'-P3' of a transmitter 21 are delayed behind outputs P1-P3 of a transmitter 20, and terminals X of switches 22, 25, 23, and 33 are connected to terminals Y. Pulse signals P1-P3 are passed through the switch 22 and separated by the switch 24; the signals P1 and P3 are supplied to the INT antenna as question signals through the switch 25 and a circulator 26, and the signal P2 is supplied to a mixer 32. The pulse signals P1'-P3', on the other hand, are passed through the switch 23 and separated by switches 28 and 29; the signal P1' is attenuated by a specific level through an attenuator 31 and mixed by the mixer 32 with the signal P2' which is supplied as it is. Then mixer outputs are supplied to the SLS antenna as a side lobe suppression signal through the switch 33. |
