RADAR

• Main Authors: HATTORI KEISUKE, FURUYA YUTAKA
• Format: Patent
• Language: English
• Published: 02.12.1986
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

PURPOSE:To eliminate an unnecessary signal component accurately by calculating the mutual difference between the 1st input signal delayed with a delay circuit and the 2nd input signal without being delayed. CONSTITUTION:Since the 1st signal including the input signal 25C from the delay circuit 14A is outputted synchronizing with the 2nd input signals 25B-27B outputted from a receiver 13 and radio-frequency radiation signals TG1, TG2... of each time, a part of the signal 25C is subtracted from the 2nd input signals 25B-28B with an arithmetic circuit 14C. As this result, the parts of signals 27d and 28d with a high frequency component are emphasized and outputted to the output of the circuit 14C. This operation is also performed continuously with respect to the radio-frequency radiation after next time and the subtracted signal is always obtained as the display signal. Then, since the size of the input from the circuit 14A with respect to the circuit 14C is changed by the adjustment of a potentiometer 34, the signal to be eliminated as unnecessaries can be eliminated accurately by adjusting it to the proper position.