Improved cycle slip detection method for generalized continuation extrapolation Doppler

• Main Authors: DAI YUANLIU, FU QIANG, LIANG WEIBIN, FU WENTAO, LI JINGJING, BAI YANG, JI YUANFA, ZHAO SONGKE, SUN XIYAN, JIA QIANZI
• Format: Patent
• Language: Chinese; English
• Published: 12.09.2023
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; CALCULATING; COMPUTING; COUNTING; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRIC DIGITAL DATA PROCESSING; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention provides an improved cycle slip detection method for generalized continuation extrapolation Doppler, which comprises the following steps of: 1, acquiring single-frequency observation data to obtain a carrier phase observation value and a Doppler observation value; 2, judging whether signal interruption or lock losing occurs or not, and selecting latest prior data according to lock losing time or sampling interval; 3, establishing a generalized extrapolation model by using the acquired prior data; 4, resolving a constant coefficient of the generalized extrapolation model; 5, establishing a Doppler extrapolation polynomial by using the calculated constant coefficient; 6, calculating a Doppler extrapolation value at the next moment by using an extrapolation polynomial; 7, using the extrapolation Doppler value to participate in Doppler calculation cycle slip; 8, subtracting cycle slip values detected by adjacent epochs; ninthly, the absolute value and the integer value of the difference cycle slip v