http://www.google.ca/search?hl=en&q=%22imaging+radars%22&aq=f&aqi=&aql=&oq=&gs_rfai=
http://www.google.ca/search?hl=en&q=%22imaging+sonars%22&aq=f&aqi=&aql=&oq=&gs_rfai=
http://www.google.ca/search?hl=en&q=%22imaging+lidars%22&aq=f&aqi=&aql=&oq=&gs_rfai=
http://www.google.ca/search?hl=en&q=%22laser+telescopes%22&aq=f&aqi=&aql=&oq=&gs_rfai=
http://www.google.ca/search?hl=en&q=%22active+optical+sensing%22&aq=f&aqi=&aql=&oq=&gs_rfai=
http://www.google.ca/search?hl=en&q=%22active+image+sensing%22&aq=f&aqi=&aql=&oq=&gs_rfai=
http://www.google.com/search?tbs=bks%3A1&tbo=1&q=%22active+remote+sensing%22+%2B%22imaging%22
http://www.google.com/search?tbs=bks%3A1&tbo=1&q=%22laser+remote+sensing%22+%2B%22imaging%22