Direction-finding and frequency-measuring single-satellite passive positioning method based on ADS-B signal

• Main Author: QU JIANMING
• Format: Patent
• Language: Chinese; English
• Published: 23.06.2023
• 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 discloses a direction-finding-frequency-measuring single-satellite passive positioning method based on ADS-B signals, and belongs to the technical field of satellite-based ADS-B passive positioning, and the method comprises the following steps: S1, setting parameters, and determining a search range; s2, calculating a direction-finding cost function and a frequency-measuring cost function of each search point; s3, calculating theoretical errors of direction finding and frequency measurement of each search point; s4, calculating a joint cost function of each search point according to the theoretical error; and S5, searching a coordinate point with the minimum joint cost function in a sub-satellite point range, wherein the coordinate point is a positioning result. According to the method, the two methods of direction-finding positioning and frequency-measuring positioning are combined, and the joint cost function coefficient is determined by calculating the positioning theoretical error of the two