JPS62146975U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of this invention, and FIG. 2 shows an example of an interference wave display circuit 8, a gate generation circuit 9, a trigger switching circuit 10, a time constant switching circuit 11, and an interference wave detection circuit 12. Circuit configuration diagram, 3rd
FIG. 4 is a time chart of the interference wave detection gate in the conventional and search mode, FIG. 4 is a time chart of the interference wave detection gate in the tracking mode according to this invention, 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 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 received video input , 14 is a status signal indicating the tracking state, 15 is a transmission pre-trigger, 1
6 is the capture (previous) gate signal input, 17 is the video distribution diagram, 18A to 18C are the gate circuits, 19A to 1
9J is a buffer gate, 20A-20C is a stretch circuit, 21A-21C is a comparison circuit, 22 is a reference voltage, 23A-23B is an AND circuit, 24A-
24B is an OR circuit, 25 is an inverter circuit, 26
A~26C are lamp driver circuits, 27~29
is a display lamp, 30 is a selector circuit, 31A to 3
1F is a monostable multivibrator, 32
A to 32C are time constant switching circuits, 33A to 33C are variable resistors, 34 is a transmission trigger, 35 is a range gate, 36 is a conventional interference wave detection gate, and 37A to 33C are variable resistors.
37C is a detection gate in search mode, 38 is a tracking target, 39 is a tracking (rear) gate, 40 is a tracking (front) gate, 41 is an acquisition (rear) gate, 42A to 4
2C is an interference wave detection gate signal 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 target search and tracking functions, but also
A radar device that has the function of detecting interference waves from a target also includes a transmitting and receiving antenna that radiates 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/reception 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/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. An interference wave detection circuit that detects the interference separately and also distinguishes the type in both modes, and detects multiple interference waves at any position within the effective reception range in the search mode by receiving the signal from the signal processing section. A gate creation circuit that creates a wave detection gate and creates multiple interference wave detection gates before and after tracking mode, and a trigger switching circuit that switches the trigger for creating interference wave detection gates in search mode and tracking mode. and a time constant switching circuit including a variable resistor that switches the time constant between search mode and tracking mode, and can also arbitrarily change the position of the interference wave detection gate in the search mode, and the output of the interference wave detection circuit. What is claimed is: 1. A radar device comprising: a disturbance wave display unit which displays not only the presence or absence of disturbance waves but also the type thereof.