This paper discusses the work being done at the Defence Research Establishment Ottawa (DREO) on profiling of Arctic sea ice using airborne laser profilometers. Data from a flight in March 1973 have been partially analyzed and some results are presented. These include representative ridge counts and power spectra for chosen areas in Nares Strait and the Arctic Ocean. Some work has been done to try to improve the operation of the laser profilometer using real-time data processing. The basic ideas behind this scheme are outlined.