Airborne Surveying with Doppler Systems
L. R. Chapman · Journal of the Surveying and Mapping Division · 1960
Self-contained navigation systems based on familiar Doppler effect provide precise, automatic direction of aircraft over predetermined flight path, with accurate side-lap and over-lap control; advantages resulting from fewer reflights, and elimination of ground based aids, are reflected in better accuracies and lower costs of Doppler survey operations.