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Astro-inertial guidance, or stellar-inertial guidance, is a sensor fusion-information fusion of inertial guidance and celestial navigation. It is usually employed on submarine-launched ballistic missiles .
An inertial navigation system (INS; also inertial guidance system, inertial instrument) is a navigation device that uses motion sensors (accelerometers), rotation sensors and a computer to continuously calculate by dead reckoning the position, the orientation, and the velocity (direction and speed of movement) of a moving object without the ...
The LN-4 is a miniature inertial system for "a manned orbital vehicle" [15] The LN-5 is a (1963)"state of the art experimentation astro-inertial system installed in a Convair 340 R4Y ". [16] The LN-7C is the inertial component of the AN/ASN-53 stellar-inertial-Doppler system used on RC-135C aircraft in the late 1960s, early 1970s. [17]
See also Inertial navigation system. Astro-inertial guidance is a sensor fusion/information fusion of the Inertial guidance and Celestial navigation. Long-range Navigation (LORAN) : This was the predecessor of GPS and was (and to an extent still is) used primarily in commercial sea transportation.
A guidance system is usually part of a Guidance, navigation and control system, whereas navigation refers to the systems necessary to calculate the current position and orientation based on sensor data like those from compasses, GPS receivers, Loran-C, star trackers, inertial measurement units, altimeters, etc.
The astro-inertial guidance uses star positioning to fine-tune the accuracy of the inertial guidance system after launch. As the accuracy of a missile is dependent upon the guidance system knowing the exact position of the missile at any given moment during its flight, the fact that stars are a fixed reference point from which to calculate that ...
Astro-inertial guidance with BeiDou Navigation ... (simplified Chinese: ... The DF-31 is a three stage solid-fuel rocket equipped with an inertial navigation system.
Astro-inertial guidance: Accuracy: 1.5 km: The Dong Feng 4 (Chinese: ... The missile uses an inertial guidance system, resulting in a large CEP of 1,500 meters. As of ...