Canadian Charts for Low-Level High-Speed Air Operations

Abstract

The Surveys and Mapping Branch of the Department of Mines and Technical Surveys has recently undertaken production of a series of special military charts for use in training for low-level, high-speed tactical air operations. Such charts must be satisfactory both for planning and for enroute air navigation and must enable the pilot to obtain a clear mental image of the terrain along the path he intends to fly. This paper describes the series and gives details of the design and production methods, devoting considerable space to the technique of hill shading, the means used to simulate three-dimensional relief.