inertial navigation
Definition
Noun: A self-contained navigation system that uses a computer, motion sensors (accelerometers), and rotation sensors (gyroscopes) to continuously calculate the position, orientation, and velocity of a moving object without the need for external references.
Usage
This term is used to describe a specific, autonomous guidance technology. It is a technical compound noun. * The submarine relied on inertial navigation to traverse the ocean depths without surfacing. * Modern aircraft often use a combination of GPS and inertial navigation for redundancy. * The core principle of inertial navigation is measuring acceleration and rotation to deduce position.
Advanced Usage
- Inertial Navigation System (INS): The full, formal term for the physical equipment that performs inertial navigation.
- The missile's Inertial Navigation System (INS) was calibrated before launch.
- Strapdown Inertial Navigation: A modern architecture where the sensors are fixed directly to the vehicle's body, as opposed to older gimballed systems.
- Most new drones use strapdown inertial navigation due to its smaller size and cost.
Variants and Related Words
- Inertial Guidance: A very close synonym, often used interchangeably, though it can emphasize the "directing" function more than just "navigating."
- Dead Reckoning: A broader, older navigation term for estimating position based on a previously known position, speed, and time. Inertial navigation is a highly sophisticated form of electronic dead reckoning.
- Accelerometer (n.): A device that measures proper acceleration.
- Gyroscope (n.): A device used for measuring or maintaining orientation and angular velocity.
Synonyms
- Inertial guidance
- Self-contained navigation
Related Phrases
- Inertial Measurement Unit (IMU): The core sensor cluster (containing accelerometers and gyroscopes) that provides the raw data to an Inertial Navigation System.
- The data from the Inertial Measurement Unit (IMU) is processed by the navigation computer.
Noun
-
a method of controlling the flight of a missile by devices that respond to inertial forces
Khám phá thêm
Các từ liên quan
Từ đồng nghĩa
Từ chứa "inertial navigation"
