Factors in the design of airborne doppler navigation equipment

The paper describes the use of a Doppler-sensor of aircraft component-velocities as an input for self-contained dead-reckoning navigation Choice of radio frequencies, beam configuration, radiated power and other system parameters is discussed and some basic quantitative expressions derived. Design features of the individual units of the sensor are given and requirements of computer and heading-reference outlined. System accuracy is discussed and the heading information is shown to be the factor presently limiting system performance.