Wide-area distributed multi-node receiving link calibration method based on GNSS signal

• Main Authors: YANG WEIJUN, ZHAO ZHAO, LIU YOUYONG, XIA SHUANGZHI, ZHANG XUWANG
• Format: Patent
• Language: Chinese; English
• Published: 07.03.2023
• 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 wide-area distributed multi-node receiving link calibration method based on GNSS signals, and belongs to the technical field of distributed radar detection. According to the invention, a node receiver processing program processes a received GNSS signal, and a signal actual measurement carrier phase difference and a satellite WGS-84 coordinate can be obtained. A differential GPS is combined with a total station to obtain an antenna phase center WGS-84 coordinate, and the antenna phase center WGS-84 coordinate and a satellite coordinate are calculated to obtain a phase difference caused by space transmission. And after the phase difference caused by space transmission is eliminated from the actually measured carrier phase difference, receiving link phase inconsistency is obtained. A local station center coordinate system is established by taking an antenna phase center as an original point, a two-dimensional angle of a satellite relative to the original point is obtained, and the two-d