Navigation involves control of an aircraft’s flight path and guidance for its mission. It is explained that accurate and high integrity navigation is essential for both civil and military aircraft. It is stated that there are two basic methods of navigation, namely, dead reckoning (DR) and position fixing systems. The various types within each method are detailed followed by an explanation of the principles and mathematics underlying them.
DR navigation systems are described. In order of increasing accuracy these are Air data-based DR navigation, Doppler/heading reference systems, inertial navigation (IN) systems and aided IN systems. For IN systems, the importance of Schuler tuning, gyro drift correction and initial alignment is explained. For aided IN systems, it is shown how accuracy is improved by combining outputs with another system such as Doppler radar or satellite navigation systems (GPS), using a Kalman filter.
The principles of Attitude Heading Reference Systems (AHRS) are explained along with the associated mathematics.
Position fixing systems are described. These include VOR/DME, TACAN, GPS and Terrain Reference Navigation (TRN).
For TRN systems, it is explained how they derive an aircraft’s position by correlating sensed terrain measurements with known terrain features, stored in a database, near the aircraft’s estimated position.
Navigation Systems
Introduction to Avionics Systems ; Chapter : 6 ; 193-236
2023-06-02
44 pages
Article/Chapter (Book)
Electronic Resource
English
Air Data Inertial Reference System , Attitude Heading Reference System , Corrections for angular rate , Coriolis acceleration and drift , Dead reckoning and position fixing navigation , Doppler Heading Reference System , Global Positioning System , Inertial navigation systems , Kalman filter and aided inertial navigation , Range and bearing radio navigation aids , Terrain reference navigation Engineering , Aerospace Technology and Astronautics , Electronics and Microelectronics, Instrumentation
Wiley | 2013
|Springer Verlag | 2014
|NTRS | 1985
|Wiley | 2016
|AIAA | 2003
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