Lightweight Integrated Doppler Navigation System for Army Aircraft

This paper presents some of the problems associated with the Signal Corps search for a suitable Doppler navigator for both lightweight fixed wing and rotary wing aircraft. The unique approaches discussed in detail are: The choice of a lightweight 3-axis stabilized antenna, position computation and display in cartesian coordinates for compatibility with Universal Transverse Mercator charts, a moving bug map display, a tape display of absolute and barometric altitude, and an integrated instrument system displaying navigation and flight information for all weather operation. These various components are combined to furnish the Army with a truly automatic self-contained navigation and flight instrument system.