JPS62148975U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of this invention, and Fig. 2 shows an interference wave display circuit 8, a gate creation circuit 9, a trigger switching circuit 10, a time constant switching circuit 11, an interference wave detection circuit 12, and movement range limitations. A circuit configuration diagram as an example of the circuit 13, FIG. 3 is a time chart of the interference wave detection gate in the conventional and interpolation mode, FIG. 4 is a time chart of the interference wave detection gate in the tracking mode according to this invention, and FIG. The figure 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, 4 is a local signal generation section,
6 is a receiver section, 7 is a signal processing section, 8 is an interference wave display section, 9 is a gate creation circuit, 10 is a trigger switching circuit, 11 is a time constant switching circuit, 12 is an interference wave detection circuit, and 13 is a movement range limiter. circuit; 14 is a received video input; 15 is a status signal indicating the tracking state;
16 is a transmission pre-trigger, 17 is an acquisition (front) gate signal input, 18 is a range gate signal, 19 is an acquisition (rear) gate signal input, 20 is a tracking (front) gate signal input, 21 is a tracking (rear) gate signal input ,2
2 is a video distributor, 23A to 23C are gate circuits, 24A to 24J are buffer amplifiers, 25A to 2
5C is a stretch circuit, 26A to 26C are comparison circuits, 27 is a reference voltage, 28A to 28F are AND circuits, 29A to 29B are OR circuits, 30 is an inverter circuit, 31A to 31C are lamp driver circuits, 32 to 34 are display lamps , 35A to 35B are selector circuits, 36A to 36F are mono staple multivibrators, 37A to 37C are time constant switching circuits, 38A to 38F are variable resistors, 39 is a gate signal that determines the movable range, 40 is a transmission trigger, 4
1 is a conventional interference wave detection gate, 42A to 42C are detection gates in interpolation mode, 43 is a tracking target, 4
4A to 44C are interference wave detection gate signals in the tracking mode. Note that the same or corresponding parts in the figures are given the same reference numerals.

Claims (1)

[Scope of utility model registration request] It not only has a target detection or tracking function, but also
In a radar device that has the function of detecting interference waves from a target, there is a transmitting and receiving antenna that emits the transmitted radio waves to the outside and receives reflected waves and interference waves from the target, and a transmitter unit that creates high-frequency power pulses. and a transmission switching unit that performs switching between transmitting radio waves from the transmitter unit and receiving radio waves from the antenna, and a frequency that converts the received radio waves input from the transmission and reception switching unit into an intermediate frequency. a mixer, a local signal generation section that creates a local signal for converting the received radio wave to an intermediate frequency, a receiver section that amplifies the output of the frequency mixer and then outputs it as a video signal, and a receiver section that receives the output of the receiver section. A signal processing section that processes distance tracking and angle tracking and creates various gates and triggers, and the output of the receiver section mentioned above are input, and the interference waves present in the signal are processed in search mode and tracking mode. There is also an interference wave detection circuit that detects interference waves separately and also distinguishes the type in both modes. a gate creation circuit that creates an interference wave detection gate and creates a plurality of interference wave detection gates before and after the tracking gate in tracking mode;
A trigger switching circuit that switches the trigger for creating an interference detection gate in search mode and tracking mode, and a trigger switching circuit that switches the time constant for creating an interference detection gate in tracking mode and interpolation mode, and also performs interrogation. a time constant switching circuit that can vary the position of the interference wave detection gate within the effective reception range and within a certain range near the tracking target when in the mode;
Consisting of a movement range limiting circuit that limits the movement range of the detection gate in tracking mode, and an interference wave display section that receives the output of the interference wave detection circuit and displays not only the presence or absence of interference waves but also the type thereof. A radar device featuring: