This paper and the following four papers were presented at the EURNAV-96 conference, held in London, 18–19 June 1996 and organized jointly by the Royal Institute of Navigation and the German Institute of Navigation. Copies of the full proceedings, comprising some 22 papers, may be obtained from the Director of the RIN.
I am delighted to be here at the EURNAV-96 conference. Vehicle navigation, location and control is a special interest of mine and I have no doubts about its value and potential.