3.4 Remote Sensing 
The Swedish Remote Sensing Committee has coordinated & 
number of field experiments concerning the application 
of remote sensing techniques to oil pollution on water, 
vegetation mapping with sounding rocket technology &nd 
with a multispectral scanner, and sea ice mapping. 
A coordinated field experiment concerning oil pollution 
was carried out in September 197 involving cooperation 
between the Swedish Coast Guard Service (vessels) the 
National Land Survey (aerial photography), the National 
Defence Research Institute (three aircraft with radar, 
IR-scanner and low-light-level TV), Helsinki university 
(passive microwave radiometer) and Swedish industry. 
An &bortive attempt to demonstrate the utility of sounding 
rocket technology was carried out in the summer of 1973, 
when the second stage of a camera-carrying Skylark vehicle 
failed to ignite. The objective was to map different vege- 
tation types in northern Scandinavia. 
A vegetation mapping experiment using a multispectral 
scanner owned by the French space agency CNES, installed 
in a Swedish aircraft, was carried out in July 1975. In 
all, 23 registrations were made, covering applications in 
agriculture, forestry, land use planning, environmental 
protection, and water vegetation mapping. Evaluation of 
digitized data has started and will continue during 1976 
and part of 1977. The evaluation is performed at the Image 
Processing Department of the National Defence Research 
Institute. 
Another experiment in March 1975 dealt with sea ice sur- 
veillance in the Baltic sea. The National Administration 
of Shipping and Navigation (ice-breaker, helicopter), the 
National Land Survey and the Air Force (aerial photography) 
the National Defence Research Institute (three aircraft 
with two types of radar and IR-scanner), the Swedish 
meteorological and Hydrological Institute (ground truth), 
Saab-Scania Co (microwave profilometer), Helsinki university 
(helicopter with passive microwave radiometer, sonar under- 
water equipment) and the Netherland Rijkswaterdienst (air- 
craft with sidelooking radar) participated in this experiment, 
along with NASA (Landsat-2 imagery). 
A Daedalus IR-scanner system was purchased jointly by the 
Meteorological and Hydrological Institute and the Swedish 
Space Corporation. In the first instance, the system will 
be used to map power plant effluents. Later it will also 
be used in sea surveillance and other promising applications.