Circle slip detection and repairing method by combining doppler integral method and ionized layer residual error method

• Main Authors: DENG MINGJUN, CAI YIHAO, YAO ZHIQIANG, CAI CHENGLIN, YAN QIN
• Format: Patent
• Language: Chinese; English
• Published: 03.12.2019
• 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 circle slip detection and repairing method by combining a doppler integral method and an ionized layer residual error method. The method comprises the following steps of a, acquiring carrier phase and doppler observation values of two frequency points in a navigation system by a receiver separately; b, calculating the detection amount by utilizing a doppler integral method to carry out preliminary cycle slip detection, and judging whether the cycle slip occurs or not; c, if the cycle slip occurs, enabling the original cycle slip detection amount to be corrected to bewithin +/-4 weeks; d, detecting the cycle slip by using the ionized layer residual error method, obtaining a cycle slip detection amount by using a linear combination of carrier phases, and comparingthe detection amount with a threshold value; if the absolute value of the detection amount of the ionized layer residual error method is larger than the threshold value, judging that the cycle slip occurs, and if not, performi