Multi-target three-dimensional ultrasonic tracking positioning system and method

• Main Authors: HAN XINLI, CHEN JIAN, FENG JIAPENG, ZHAO YIHANG, TIAN YE, YAN XUEZHI, SUN XIAOYING, SONG SHUTING
• Format: Patent
• Language: Chinese; English
• Published: 29.01.2014
• 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

The invention relates to a multi-target three-dimensional ultrasonic tracking positioning system and method, in particular to an ultrasonic propagation time delay TOA multi-target three-dimensional ultrasonic tracking positioning system and method using infrared signals as time base. The positioning system comprises a transmitting component, a receiving component and a signal processing and displaying component. The positioning method uses the infrared signals as the time base, distinguishing of multiple targets are achieved through frequency division multiplexing of the infrared signals and ultrasonic signals, a wave trap circuit is combined with a digital filter to separated the ultrasonic signals of different targets, automatic gain is used to complete far-near positioning seamless switching of the targets, and high-precision multi-target ultrasonic tracking positioning is achieved. The system and method has the advantages that no interference occurs among the multiple targets, and the system and method is