Capacitive micro-accelerometer is the most common, and there are also mature products. The basic principle is to use capacitance as a detection interface…
The measurement of the azimuth angle of the orientation side with a gyro theodolite, referred to as gyro orientation. Due to manufacturing defects of the…
Latitude error or damping error Cause: It is caused by the vertical damping method. Elimination method: (1) External compensation method-calculate the…
The three-axis gyroscope is the core sensitive device of the inertial navigation system, and its measurement accuracy directly affects the accuracy of the…
An inertial measurement unit (IMU) is a device that measures the three-axis attitude angle and acceleration of an object. Normally, an IMU contains three…
MEMS sensor, or Microelectro Mechanical Systems, is a multidisciplinary frontier research field developed on the basis of microelectronics technology.…
The optical loop of the laser gyroscope is actually an optical oscillator. According to the shape of the optical cavity, it is divided into a triangular…
The gyro motor is supported in a sealed gyro ball (also called a floating ball) with high-precision ball bearings, and a T-shaped outer rotor structure is…
At present, the main technology in horizontal well drilling is MWD (ie, logging while drilling), and the one used for formation evaluation is called LWD…
The integrated navigation system uses computer and data processing technology to combine navigation equipment with different characteristics to achieve…
AHRS called the heading reference system includes multiple axial sensors, which can provide heading, roll and roll information for the aircraft. This type…
Gravity high side: At a certain depth position on the borehole curve, when the plumb line crosses the well axis, the side where the plumb line enters is…
Coarse alignment: Coarse alignment adopts the multi-position method to obtain the output of the fiber optic gyroscope and accelerometer when the downhole…
The gyroscope in the gyroscope rotates around its axis of symmetry at high speed has two important characteristics: First, it is fixed-axis, that is, the…
Each gyroscope undergoes rigorous performance testing and calibration of sensitivity and zero-rate output values before leaving the factory. However, when…
By measuring the acceleration (inertia) of the aircraft and automatically performing integral calculations, the technology of obtaining the instantaneous…