Velocity Accuracy
Velocity accuracy refers to the statistical values of the difference between the observed velocity and the true velocity. It is a key parameter in navigation, tracking systems, and applications like GPS, where understanding the speed and direction of movement is essential. Key aspects of velocity accuracy: Measurement: The accuracy of velocity depends on how precisely […]
User segment
The User Segment refers to the general term for devices used to receive and process navigation satellite signals to perform functions such as positioning, velocity measurement, and time synchronization.
True North
True North refers to the geographic North Pole, which is the point on Earth where the planet’s axis of rotation intersects the surface in the Northern Hemisphere. It is the direction along the Earth’s surface that points towards the geographic North Pole, and it is used as the reference point for all true directions and […]
True course
In navigation, both True Course (TC) and True Heading (TH) refer to the direction of travel of a vessel or aircraft, but they are slightly different concepts: True Course (TC): The True Course refers to the planned or intended direction of travel, expressed in degrees relative to True North (the geographic North Pole). It is […]
Track angle
Track Angle: Track Angle refers to the actual direction that the vessel, aircraft, or vehicle follows over the ground, measured relative to True North (or Magnetic North). The track is the real path the vehicle takes, which can be affected by external factors like wind, currents, or drift, causing the actual movement to differ from […]
Track
The track in navigation refers to the actual path a vessel, aircraft, or vehicle follows over the ground or water as it moves from one point to another. It is the real route taken, considering all external influences like wind, current, or drift, which can cause the vehicle to deviate from its planned course. The […]
Time datum
A Time Datum refers to a specific reference point or a standardized moment in time used as a basis for recording or measuring time in a particular system or context. It is crucial in various fields like navigation, surveying, geodesy, and scientific research, as it provides a consistent starting point from which time-related measurements or […]
Standard Deviation
In the context of inertial navigation systems (INS), Standard Deviation is a measure of how spread out or varied the errors in your system are. Here’s how it works in INS: Calculate the errors: For each measurement, find the difference between the estimated value (from the INS) and the true value (from a reference like […]
Space segment
The term refers to all the satellites and their constellations in a satellite navigation system.
Space reference
Space Reference (also known as a reference frame or reference system) is a coordinate system used to define the position and orientation of objects or points in space. It provides the necessary framework to describe spatial locations and movements in a consistent and standardized manner. In the context of satellite systems, navigation, and geodesy, the […]
