Geophysical radar design

The article begins by setting out issues of policy and system architecture and design which have informed the development of impulse radar systems at CCL. We then describe in outline and illustrate various systems including a helicopter-mounted surveying instrument, a ground-based impulse radar test-bed, and an instrument for investigating performance in a borehole. The thrust of the article is that the current state of the technique suits it for application in the form of purpose-designed systems by experienced operators under defined conditions rather than general-purpose systems in the hands of unqualified users.