reconnaissance

make a reconnaissance of the work to be done

We set up reconnaissance of enemy movements.

The Regiment was reorganized as a light reconnaissance unit and a single Guidon was presented in 1971.

China also is interested in electronic intelligence (ELINT) or signals intelligence (SIGINT) reconnaissance satellites.

General Atomics Aeronautical Systems;Inc.;unmanned reconnaissance aircraft;

In the electronic reconnaissance area, the conventional detection method of the radar pulse signal is based on nonmatched envelope detection.

Iraqi security forces were placed on high alert and American aircraft —unpiloted reconnaissance drones flying low, and fighter jets roaring high above —crossed the capital.

Through careful reconnaissance, he discovers mesoclimate of barren mountain wild cereal is hot and dry, water strange be short of, decide " abandons gold to look for water " then.