JPS62124577U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of this invention, Fig. 2 is a block diagram showing an embodiment of a gate creation circuit, a switching circuit, a jamming detection circuit, and a jamming display circuit, and Fig. 3 is a block diagram showing an embodiment of the conventional and search modes. FIG. 4 is a time chart of the jamming detection gate in tracking mode, and FIG. 5 is a configuration diagram of a conventional radar device. In the figure, 1 is an antenna, 2 is a transmitter section, 3 is a TR section, 4 is a mixer, 5 is a local signal generation section,
6 is a receiver section, 7 is a signal processing section, 8 is a jamming display section, 9 is a gate creation circuit, 10 is a switching circuit,
11 is a jamming detection circuit, 12 is a receiving video input, 13 is a status signal indicating tracking mode, 14 is a transmission pre-trigger, 15 is a capture (front) gate, 16 is a video distributor, 17A to 17C are gate circuits, 18A to 18I is a buffer amplifier, 19
A~19C are stretch circuits, 20A~20C are comparison circuits, 21 is a reference voltage, 22A~22F are AND circuits, 23A~23B are OR circuits, 24A~
24B is an inverter circuit, 25A to 25C are lamp drivers, 26 to 28 are jamming indicator lamps, 29A to 29H are monostable multivibrators, 30 is a selector circuit, 31 to 33 are jamming detection gates, 34 is a transmission trigger, 35 is R gate, 36 is the detection gate in conventional and search mode, 37 is the tracking target, 38 is the tracking gate (rear)
, 39 is a tracking gate (front), and 40 is an acquisition (rear) gate. Note that the same or corresponding parts in the figures are given the same reference numerals.

Claims (1)

[Scope of utility model registration request] In a radar device that not only has the function of searching or tracking a target, but also has the function of detecting interference waves from the target, an antenna used for both transmission and reception, which radiates the transmitted radio waves to the outside and receives reflected waves and interference waves from the target. a transmitter section that creates high-frequency power pulses, a transmission/reception switching section that performs switching between transmitting radio waves from the transmitter section and receiving radio waves from the antenna, and input from the transmission/reception switching section. A mixer that converts the frequency of received radio waves to an intermediate frequency, a local signal generator that creates a local signal for converting the received radio waves to an intermediate frequency, and a receiver section that amplifies the mixer output and outputs it as a video signal. and a signal processing section that receives the output of the receiver section and processes distance tracking and angle tracking, and creates various gates and triggers; In the search mode, an interference wave detection gate is created outside the effective reception range by receiving signals from the interference wave detection circuit and the signal processing section described above, and in the tracking mode, a tracking gate is created so that the type of interference wave can be determined. A gate creation circuit that creates multiple interference wave detection gates in front and back; a switching circuit that switches between interference wave detection gates in tracking mode and search mode; and a switching circuit that switches between interference wave detection gates in tracking mode and search mode; What is claimed is: 1. A radar device comprising: an interference wave display section that displays not only the presence or absence of interference waves but also the type of interference waves when in tracking mode.