The airborne laser mapping system (ALTM – Airborne Laser Terrain Mapper) from Optech Inc. was the first equipment purchased by ESTEIO (2001), designed to capture spatial coordinates (X,Y,Z) of points in the ground surface.
It consists of a sensor with an enclosed LASER with spectrum close to the infrared, inertial reference system, optical and electronic parts of the receiver and a control rack that comprises the computer components, controlled by a touch screen.
In 2006, ESTEIO brought to Brazil a new sensor manufactured by Leica Geosystems: The 150kHz Airborne Laser Sensor- ALS50 capable of obtaining three-dimensional coordinates in the terrain of up to 150,000 points per second.
In 2008, ESTEIO purchased its third LASER scanning equipment. The second of the model Leica ALS50 with capacity to obtain three-dimensional terrain coordinates with up to 150,000 points per second and equipped with MPiA (Multi-Pulse in the Air) technology.
Still in 2008, ESTEIO performed an upgrade of its first LASER equipment model ALS50, to ALS-50 – Phase II, with MPiA (Multi-Pulse in the Air) technology.