JPS62124579U - - Google Patents

Description

[Brief explanation of drawings]

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, a jamming display circuit, and a gate position setting circuit; Fig. 3; 4 is a time chart of the jamming detection gate in the conventional and search mode, FIG. 4 is a time chart of the jamming detection gate in the tracking mode, and FIG. 5 is a configuration diagram of the 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 gate position setting circuit, 13 is a receiving video input, 14 is a status signal indicating tracking mode, 15 is a transmission pre-trigger, 16 is a capture (front) gate, 17 is a video distributor, 18A to 18C is the gate circuit, 19A~1
9I is a buffer amplifier, 20A to 20C are stretch circuits, 21A to 21C are comparison circuits, 22 is a reference voltage, 23A to 23F are AND circuits, 24A to
24B is an OR circuit, 25A to 25B are inverter circuits, 26A to 26C are lamp drivers, 27
~29 is a jamming indicator lamp, 30A~30H
31 is a monostable multivibrator, 31 is a selector circuit, 32 is a variable resistor, 33 is a jamming detection gate in search mode, 34 to 36 are jamming detection gates in tracking mode, 37 is a transmission trigger, 38 is an R gate, 39 is a conventional detection gate, 40 is a tracking target, 41 is a tracking gate (rear), 4
2 is a tracking gate (front), and 43 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; It is divided into search mode and tracking mode, and also includes an interference wave detection circuit that distinguishes and detects the type of interference wave in tracking mode, and an effective reception range in search mode by receiving the signal from the signal processing section. A gate creation circuit that creates a detection gate that can be moved to any position within the area, and creates multiple interference wave detection gates before and after the tracking gate so that the type of interference wave can be determined when in tracking mode, and a gate creation circuit that creates multiple interference wave detection gates before and after the tracking gate. and a switching circuit that switches the interference wave detection gate in tracking mode, and a gate position setting that allows the detection gate to be moved arbitrarily in order to distinguish interference waves from clutter, fixed targets, etc. in search mode. and an interference wave display section that receives the output of the interference wave detection circuit and displays the presence or absence of interference waves in search mode, and displays the presence or absence and type of interference waves in tracking mode. radar equipment.