JPS6281076U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of this invention, Fig. 2 is a diagram showing the relationship between the tracking video and various gates, Fig. 3 is a block diagram showing an embodiment of the detection circuit, and Fig. 4 is a conventional radar. FIG. 5 is a time chart of transmission pulses, etc. In the figure, 1 is a transmitter section, 2 is an antenna, and 3
is a transmission/reception switching section, 4 is a receiver section, 5 is a signal processing section,
6 is a range disk drive circuit, 7 is a jamming display section, 8 is a detection circuit, 9 is a tracking video, 10 is a wide gate (front), 11 is a wide gate (rear), 12 is a narrow gate (front), 13 is a narrow gate gate (rear), 14 is detection gate 1, 15 is detection gate 2, 16 is detection gate 3, 17 is detection gate 4, 18 is video input,
19 is a wide gate (front) input, 20 is a buffer amplifier, 21 is a one-shot multi, 22 is a gate circuit, 23 is a comparator, 24 is an R/S flip-flop, 25 is an AND circuit, 26 is an OR circuit,
27 is a reference voltage, 28 is a detection circuit output, 29 is a transmission pulse, 30 is a range gate, 31 is a jamming detection gate, and 32 is an actual video. Note that the same or corresponding parts in the figures are given the same reference numerals.

Claims (1)

[Scope of utility model registration request] A radar device that has the function of not only searching for or tracking a target but also detecting interference waves from the target includes a transmitter section that generates high-frequency power pulses, and a transmitter section that radiates the high-frequency power pulses to the outside as transmitted radio waves. a transmitting/receiving antenna that receives reflected waves and jamming waves from a target; a transmitting/receiving switching unit that performs switching between transmitting radio waves from the transmitter unit and receiving radio waves from the antenna;
After frequency-converting the received radio wave input from the transmission/reception switching unit to an intermediate frequency band and amplifying the signal,
a receiver section that outputs a video signal; a range discrimination circuit that receives the output from the receiver section and detects a range discrimination error for distance tracking; and a range discrimination circuit that receives the output from the receiver section and detects a range discrimination error for distance tracking; A signal processing section that receives the output and performs processes such as distance tracking and angle tracking, and creates various gates, and an interference wave display that receives the output of the interference wave detection circuit in the receiver section and informs you of the presence of interference waves. 4 gates for detecting interference waves are created using the video input from the receiver section, the gate signal from the signal processing section, and the interference waves entering the tracking gate are detected by these gates. , consists of a detection circuit that outputs a signal to switch to memory tracking mode, and when interference waves, clutter, or another target approaches the video being tracked and attempts to enter the tracking gate, it automatically switches to memory tracking mode. Furthermore, when the above-mentioned interference waves, etc. are removed from the tracking gate, the radar device is characterized in that it switches back to the normal tracking mode, and tracking is always performed in a stable state.