JPS6372573U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a configuration diagram showing an embodiment of this invention, Figure 2
The figure shows a detailed configuration diagram of the interference wave detection circuit of this invention.
FIG. 3 is a time chart of the interference wave detection gate according to this invention, FIG. 4 is a block diagram of a conventional radar device, and FIG. 5 is a time chart of the interference wave detection gate, transmission pulse, etc. of the conventional radar device. In the figure, 1 is an antenna for both transmitting and receiving, 2 is a transmitter section, 3 is a transmitting/receiving switching section, 4 is a frequency mixer, and 5 is a transmitting/receiving antenna.
1 is a local signal generation section, 6 is a receiver section, 7 is a signal processing section, 8 is a conventional interference wave display section, 9 is a switching circuit, 10 is an interference wave detection circuit, 11 is an interference wave display section,
12 is a reset circuit, 13 is a transmission pulse, 14 is a range gate, 15 is a conventional emission wave detection gate,
16 is the actual video of the receiver output, 17 is the tracking video that is an enlarged version of the actual video, 18 is the tracking (front) gate,
19 is a tracking (rear) gate, 20 is an acquisition (front) gate, 21 is an acquisition (rear) gate, 22 to 25 are interference wave detection gates, 26 is a status signal indicating whether it is tracking or searching, and 27 is a detection circuit output signal. , 28 is a reset signal for resetting the detection circuit, 2
9A to 29K are buffer amplifiers, 30 is a selector, 31A to 31P are one-shot multivibrators, 32A to 32D are gate circuits, 33 is a reference voltage, 34A to 34D are comparators, 35A to 34D are comparators.
35D is a flip-flop, 36A to 36C are AND circuits, 37A and 27B are OR circuits, and 38A to 36C are AND circuits.
38C is a lamp driver circuit, 39A is an indicator lamp that indicates CW interference waves, 39B is an indicator lamp that indicates pulse interference waves, and 39C is an under-jam indicator lamp that indicates the presence of interference waves. In addition, the same reference numerals are given to the same or corresponding parts in the figures.

Claims (1)

[Scope of utility model registration request] In radar equipment that not only has a target search or tracking function but also has the function of detecting interference waves from the target, a transmission/reception function that emits transmitted radio waves to the outside and receives reflected waves and interference waves from the target. A shared antenna, 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 from the transmission/reception switching section. A frequency mixer that converts the frequency of input 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 local signal generator that amplifies the output of the frequency mixer and converts it into a video signal. A receiver section that outputs the output, a signal processing section that receives the output of the receiver section, processes distance tracking and angle tracking, and creates various gates and triggers, and the output of the receiver section is input, and the signal is Existing interference waves are detected separately in search mode and tracking mode, and in tracking mode, four gates are created for detecting interference waves, and the directionality of interference waves entering the tracking gate is determined by these gates. an interference wave detection circuit that detects and outputs a signal to switch to memory tracking mode; an interference wave display unit that determines and displays the type of interference wave;
The interference wave detection circuit is characterized by comprising a switching circuit for switching the trigger for creating an interference wave detection gate in search mode and tracking mode, and a reset circuit for sending a reset signal to the interference wave detection circuit. radar equipment.