JPS62114379U - - 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 jamming detection circuit, Fig. 3 is a time chart of a jamming detection gate, and Fig. 4 is a conventional jamming detection circuit. The gate time chart in 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 jamming detection circuit, 10 is a gate position setting circuit, 11 is a received video input, 12
The input is a transmission pretrigger, 13A to 13C are inputs from the gate position setting circuit, 14 is a video distributor,
15 is a trigger distributor, 16A-16F are buffer amplifiers, 17A-17C are gate circuits, 18A-
18C is a gate creation circuit, 19A to 19C are sampling and hold circuits, 20A to 20C are comparison circuits, 21 is a reference voltage, 22 is a three-input AND circuit,
23 is a three-input OR circuit, 24 is an inverter, 25
is a two-input AND circuit, 26 is an output for CW jamming display, 27 is an output for pulse jamming display, 2
8 to 29 are detection gates 1 to 3, 30 is a transmission pre-trigger, 31 is a transmission trigger, 33 is a range gate,
34 is a conventional jamming detection gate. It should be noted that the same or equivalent parts in the figures are indicated by 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. , 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, and detects multiple interference waves created by the trigger input from the signal processing section. An interference wave detection circuit that detects interference waves present in the input signal from the receiver section by using a gate for distinguishing between pulse interference waves and continuous wave interference waves, and an interference wave detection circuit created by the above interference wave detection circuit. a gate position setting circuit that can arbitrarily set or move the position of a plurality of interference wave detection gates; and a gate position setting circuit that can arbitrarily set or move the position of a plurality of interference wave detection gates; A radar device comprising a disturbance wave display unit that displays separately.