| 摘要 |
PURPOSE:To exclude the jamming by a range gate steal, by transmitting a false pulse having a frequency different from that of a transmission pulse prior to the transmission of the latter. CONSTITUTION:A false pulse transmitter 6 is attached to a transmitter 2 which transmits a regular transmission pulse. The transmission frequency of the false pulse transmitter 6 is made different from that of the transmitter 2, and a false pulse is controlled so as to be transmitted prior to the transmission of the regular transmission pulse. A power composer 7 composes the outputs of the transmitter 2 and the false pulse transmitter 6. On the other hand, a filter 8 allowing only the passage of a regular reception pulse is provided is front of a receiver 3. By this constitution, a range gate steal pulse responds only to the false pulse, not responding to the reception pulse, and thus the receiver 3 delivers only a regular reception video signal. |
