Microsoft has confirmed that it <A HREF="http://news.zdnet.com/2100-9588_22-6051449.html?tag=zdnn.alert">plans to buy Vexcel,</A> a maker of remote sensors, to help expand the software maker's digital mapping efforts. In a statement on Monday, Microsoft said the pending deal will help it with its efforts "to deliver a dynamic immersive digital representation of the real world that provides the best local search and mapping experience." Vexcel makes a digital aerial camera known as the UltraCam as well as remote sensor and satellite tools. Aerial photography has become a hotbed of competition, with Google Earth and Microsoft's Virtual Earth racing to map the globe and beyond as part of their local search services.