Advanced Navigation System for Aircraft Applications

  • G. Satheesh Reddy Research Centre Imarat, Hyderabad
  • V.K. Saraswat Defence Research and Development Organisation, DRDO Bhawan, Delhi
Keywords: Navigation system, ring laser gyro, fibre optic gyro, inertial navigation system


Various forms of navigation are present in today’s world, leading from satellite based navigation to several archaic forms of navigation like star gazing. Now, lots of technologies are available to achieve this but with certain limitations. For example, FOG based navigation provides accuracy with in 0.10-100 range which is not sufficient for various military applications. Therefore, there is a need to design a system which will have better accuracy and thus requires development of ring laser gyro-based inertial systems. This paper concentrates on the aided navigation system based on ring laser gyro of 0.01 deg/hr class and GPS - GLONASS to further enhance the capability of system in terms of accuracy. The usage of such systems not only provides accurate results momentarily but it also persists for longer duration with the aid of GPS - GLONASS for applications like aircraft, ship and long range missiles. The system provides accuracy of the level of 1 Nm/hr in pure navigation and 30 m with the aid of GPS - GLONASS. Apart from this, the availability of gyro-compass and baro-inertial algorithms further enhances the system capabilities and made them self dependent to the major extent.

Defence Science Journal, 2013, 63(2), pp.131-137, DOI:

Author Biographies

G. Satheesh Reddy, Research Centre Imarat, Hyderabad
Mr Satheesh Reddy obtained his BTech (Elect. Comm. Eng.) from JNTU Ananthapurand MS (Elect. Comm. Eng.) from JNTU,Hyderabad. Presently working as AssociateDirector of RCI, DRDO and spearheading theTechnology Group of Navigation Systems.With more than two and half decades of experience, contributed towards design, development and productionisation of advanced Navigation technologies for the medium, long range and tactical missiles like Agni, Prithvi, Brahmos, Dhanush, Prahaar, AD, ANSP, Astra; Fighter Aircrafts like LCA, Jaguar, Sukhoi-30 and other strategic missions in India.
V.K. Saraswat, Defence Research and Development Organisation, DRDO Bhawan, Delhi
Dr V.K. Saraswat obtained his MTechfrom IISc, Bangalore and PhD (Propulsion Engineering) from Osmania University, Hyderabad. Presently working as a Scientific Advisor to Raksha Mantri (SA to RM), Director General, DRDO and Secretary, Department of Defence R&D, India. Under his leadership, India has embarked ona challenging, futuristic Air Defence Programme encompassing development of complex anti ballistic missile systems, Radars, C4I systems and integration of battle management resources into a national authority.
How to Cite
Reddy, G., & Saraswat, V. (2013). Advanced Navigation System for Aircraft Applications. Defence Science Journal, 63(2), 131-137.
Invited Paper