What Error Problem Does The Inertial Sensor Have?
Because of the manufacturing process, the data measured by the inertial sensor usually has a certain error.The first error is the offset error, which is…
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What is the Structure of a Gyro Theodolite?
The gyro theodolite consists of a gyroscope, a theodolite and a tripod. (1) gyroscope The gyroscope is the core of the system, which is mainly composed of…
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What Does AHRS Stand For?
The AHRS, called the Attitude Reference System, consists of multiple axial sensors that provide the aircraft with heading, roll and roll information. Such…
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What Are The Main Performance Parameters Of FOG?
1 zero deviation and zero drift Zero offset is the output of the gyroscope when the input angular velocity is zero (that is, the gyroscope is at rest). It…
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What is a Navigational Receiver?
This type of receiver is mainly used for the navigation of moving carrier. It can give the position and speed of the carrier in real time.This kind of…
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What is Zero Drift or Zero Bias Stability?
It is one of the important indexes to measure the precision of gyroscope.Denotes that when the input angular rate is zero, it measures the dispersion…
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What is the Error and Elimination Method of Gyro Compass
Latitude error or damping error Cause: the vertical damping method is used. Elimination method: (1) External compensation method -- calculate the size and…
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Where is the Optical Fiber Gyro North Finder Used?
Optical fiber gyro north finder can work reliably in the full weather, and is not affected by the external environment such as the earth's magnetic field,…
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What are the Characteristics of Inertial Navigation?
The error accumulates with time and distance We need initial information Expensive and cumbersome Full autonomy and high reliability (military and…
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Operation of a Fiber Optic Gyroscope
Fiber-optic gyroscope uses two beams from the laser to be injected into the same optical fiber, but in opposite directions, the beam resisting rotation…
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What Applications Are MEMS Gyroscopes Made Of?
The cheapest and most widely used MEMS gyroscopes use as few analog circuits as possible, and few digital ones.The output impedance of these gyroscopes is…
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How Does AHRS Work?
AHRS, commonly known as heading reference system, can provide accurate and reliable roll, pitch, heading and other attitude and navigation information for…
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What are the disadvantages and remedies of IMU?
The main disadvantage of using IMU navigation is that they usually accumulate errors, including Abbe errors. Because the guidance system will continue to…
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What Is Gyrotheodolite Orientation?
The measurement of directional edge azimuth determined by gyro theodolite is referred to as gyro orientation.Due to the manufacturing defects of the…
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What Are The History And Types Of Gyroscopes?
The earliest known gyroscope-like device was invented in 1817 by John Bohnenberger of Germany. At first he called this device "machine", based on a sphere…
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What Are The Classifications Of Acceleration Sensors?
piezoelectric Piezoelectric acceleration sensor is also called piezoelectric accelerometer.It also belongs to the inertial sensor.The principle of…
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What Is Combined Navigation
The technique or method of guiding the carrier from its starting point to its destination is called navigation.The navigation system measures and…
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What Is The Principle Of The IMU?
The inertial measurement unit is composed of three accelerometers and three gyroscopes. The three accelerometers and gyroscopes are designed to measure…
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What Are The Technical Difficulties Of Optical Fiber Gyroscopes?
The main technologies that need to be broken through in fiber optic gyroscopes are the instability of the scale factor caused by the loss of sensitivity…
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What Is The Difference Between Gyro Error and Compass Error in Navigation?
Gyrocompass difference refers to the error caused by bai technical problems in gyrocompass, and du is often affected by latitude zhi degree and speed, but…
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