RADIO AUGMENTED AND CALIBRATED INERTIAL NAVIGATION EQUIPMENT.

Donald B. Daniel

Peer Reviewed

Abstract:	Improved Inertial Navigation equipment will someday make instrument flight, from take-off to landing, an everyday occurrence. Radio Augmented and Calibrated Inertial Equipment (RACINE) will accomplish this task in the not too distant future and will probably be the interim system that carries the load for many years. Radio and inertial navigation systems have an inherent compatibility. The use of selected precision radio equipment with an inertial reference unit can provide the basis for a navigation system possessing real time navigation capabilities of precision well beyond the singular performance of either device when employed individually. There are numerous precision radio position fixing systems having characteristics compatible with the radio-inertial navigation concept. Low-frequency, hyperbolic radio navigation systems are reaching advanced stages of development; they are unrestricted by line-of-sight propagation problems and are available for immediate integration into systems. Loran C is an outstanding example of these systems and was chosen for use in RACINE. The integration of an optimum radio-inertial system is best accomplished by a digital control data processor. Fundamental to the successful accomplishment of the task is the development of mathematics that will transfer the hyperbolic radio coordinates into geographic coordinates in a manner that minimizes computer requirements and facilitates interfacing with the inertial subsystem. A unique mathematical approach was developed and mechanized in RACINE.
Published in:	NAVIGATION: Journal of the Institute of Navigation, Volume 12, Number 4
Pages:	348 - 354
Cite this article:	Daniel, Donald B., "RADIO AUGMENTED AND CALIBRATED INERTIAL NAVIGATION EQUIPMENT.", NAVIGATION: Journal of The Institute of Navigation, Vol. 12, No. 4, Winter 1965-1966, pp. 348-354.
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