Antenna
In inertial navigation, an antenna typically refers to the device that receives signals from external positioning systems, most commonly Global Navigation Satellite Systems (GNSS), such as GPS, GLONASS, Galileo, or BeiDou. The antenna is crucial for providing absolute position information (latitude, longitude, and altitude) and aiding in the initialization and correction of the inertial navigation […]
Angular Random Walk
Angular Random Walk (ARW) is a type of error that affects gyroscopes and, by extension, inertial navigation systems (INS). It refers to the random fluctuations in the angular velocity measurement provided by a gyroscope, which causes the system’s angular orientation (e.g., roll, pitch, and yaw) to gradually drift over time. Key Characteristics of Angular Random […]
Altitude
In inertial navigation (INS), Altitude refers to the vertical position of an object or device relative to sea level (or a reference datum). It is the measure of the object’s height above the Earth’s surface, typically expressed in meters (m) or feet (ft). Role of Altitude in Inertial Navigation: Part of Positioning Information: In an […]
AHRS
AHRS stands for Attitude and Heading Reference System. It is a type of navigation system that provides the orientation (attitude) and heading (direction) of a vehicle or object relative to a reference frame, typically the Earth’s surface. AHRS is widely used in aerospace, marine, and automotive applications where precise orientation and heading information are critical […]
Accuracy
In the field of Inertial Navigation (INS), accuracy generally refers to the degree of deviation between the estimated values provided by the navigation system or measurement device and the true values. Accuracy is a key metric for evaluating the performance of a navigation system and directly affects the reliability and effectiveness of the system in […]
Accelerometer
An accelerometer is a sensor that converts acceleration information into electrical signals. It typically consists of a mass block, damping mechanism, elastic body, sensing element, and debugging components. Principle During the acceleration of the sensor and the object being measured, the inertial force acting on the mass block is measured, and the acceleration value is […]
Absolute Position
Absolute Position refers to the location of an object or device determined within a fixed, globally unified coordinate system. It typically refers to a position determined by a global coordinate system (such as latitude and longitude) relative to the Earth’s surface, unaffected by changes in the surrounding environment or reference objects. Absolute position provides not […]
