Landslide mass monitoring method and system based on GNSS accelerometer fusion

• Main Authors: LIAN DAJUN, WEI SHIYU, ZHAO WEI, YU XINGWANG
• Format: Patent
• Language: Chinese; English
• Published: 08.06.2021
• 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; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention provides a landslide mass monitoring method and system based on GNSS accelerometer fusion. The method comprises the steps: obtaining a carrier speed and a carrier acceleration which are collected through a GNSS receiver and an accelerometer in a period; performing multi-rate Kalman filtering on the carrier speed and the carrier acceleration, and performing RTS smoothing processing on the filtered data to obtain a first observation value; carrying out preset period or real-time observation according to a set rule to obtain a second observation value, and calculating the second observation value and the first observation value to obtain a sliding amount; presetting a sliding amount threshold value, and taking the ratio of the sliding amount to the sliding amount threshold value as a sliding result; and judging a sliding deformation level according to the sliding result, and performing corresponding processing according to the sliding deformation level. According to the invention, the observation d