JPS63139576U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an embodiment of the invention, and Fig. 2 is an STC (Sensitivity Timing) diagram of this invention.
e Control) Detailed configuration diagram of the control circuit,
FIG. 3 is a time chart of STC control according to this invention, FIG. 4 is a block diagram of a conventional radar device, and FIG. 5 is an explanatory diagram of the operation of STC control of a 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.
is a local signal generation section, 6 is a receiver section, 7 is a signal processing section, 8 is a display section, 9 is an STC control section, 10 is an A/D converter circuit, 11A to 11D are AND circuits, and 12A to 12D are register circuits. , 13A~
13D is an addition circuit, 14A to 14D are register circuits, 15A and 15B are multiplication circuits, 16 is a subtraction circuit, 17 is a sign determination circuit, 18 is an absolute value circuit, 19
A to 19C are 1 scan memory circuits, 20 is a switch circuit, 21 is a control circuit, 22A and 22B are counter circuits, 23 is an oscillation circuit, 24 is a frequency dividing circuit, 2
5 is a selection circuit, 26 is a counter circuit with up-down control, 27 is an adder circuit, 28 is a D/A converter circuit, 29 is a received video signal, 30 is a video gate exceeding a certain level, 31 is a front gate, 32 is the rear gate, 33 is the sum of the video amplitudes in the front gate of the specified area, 34 is the sum of the video amplitudes in the rear gate of the specified area, 35 is a clock for counting clutter in the front gate, and 36 is the sum of the video amplitudes in the rear gate of the specified area. 37 is the sum of the clocks that count the clutter in the front gate of the specified area; 38 is the sum of the clocks that counts the clutter in the rear gate of the specified area; 39 is the read pulse; 40 is the write pulse; 41 is a weighted STC control signal, 42 is a transmission pulse, and 43 is S
44 is a processed video subjected to TC control, 44 is an STC control signal of a conventional radar device, and 45 is a processed video subjected to STC control of a conventional radar device. It should be noted that the same or corresponding parts in the drawings are designated by the same reference numerals.

Claims (1)

[Scope of utility model registration request] A radar device having a target search or tracking function includes a transmitting and receiving antenna that emits transmitted radio waves to the outside and receives reflected waves from the target, a transmitter unit that creates high-frequency power pulses, and radio waves from the transmitter unit. a transmission/reception switching unit that performs switching between transmitting and receiving the received radio waves from the antenna; a frequency mixer that converts the received radio waves input from the transmission/reception switching unit into an intermediate frequency; a local signal generation section that creates a local signal for conversion into a local signal, a receiver section that amplifies the frequency mixer output and outputs it as a video signal, and a receiver section that receives the output of the receiver section and performs distance tracking, angle tracking, and detection. A signal processing section that processes the clutter and creates various triggers, and a video signal output from the receiver section are input, and the STC (STC) has a slope depending on the product of the spread and amplitude of clutter included in the video signal.
Safety Time Control)
A radar device comprising an STC control section that outputs a signal, and a display section that receives and displays the output of the signal processing section.