RTK millimeter-level real-time precision positioning method for single-frequency inverse Doppler frequency shift

• Main Authors: CAI YIHAO, DENG YUZHEN, WU QIAN, CAI CHENGLIN
• Format: Patent
• Language: Chinese; English
• Published: 11.03.2022
• 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 an RTK millimeter-level real-time precision positioning method for single-frequency inverse Doppler frequency shift, and the method comprises the steps: carrying out the real-time inverse Doppler through the speeds of a base station and a moving station; calculating a carrier phase value phi t; and calculating the coordinates of the mobile station receiver according to the inverse Doppler and the carrier phase value phi t. Compared with the prior art, the GNSS signal abnormal problem is solved through the Doppler inverse construction method, the integer ambiguity can be rapidly solved in the road positioning environment where high-quality GNSS signals cannot be received in cooperation with the mutual difference weighting method based on elevation angle selection, the high correct estimation rate of the integer ambiguity is ensured, and the performance of a traditional single epoch positioning algorithm is improved. 本发明公开了一种单频逆构多普勒频移的RTK毫米级实时精密定位方法，是通过基站和流动站速度，实时逆构多普勒；从而计算载波相位值φt；再根据逆构多