The FLI-MAP family of LiDAR systems has been used for surveying narrow corridors since 1995, and has become the most trusted airborne survey systems in use today. FLI-MAP has executed more than 250 survey projects for various industries around the world. FLI-MAP 400 combines all the latest technical advancements in the fields of GPS positioning, laser scanning and digital imagery, with the knowledge and experienced gained from being at the leading edge of the LiDAR industry for over 10 years.

The FLI-MAP 400 system is especially well suited to high accuracy and high detail survey projects in corridor and small/medium area surveys. With the simultaneous acquisition of laser, imagery and video data, the FLI-MAP system provides a versatile solution to a variety of geospatial needs.

LiDAR
The FLI-MAP 400 carries a high precision, rotating scanning laser. Able to acquire data at 150,000 ranges per second, each recording up to four measurements, the laser scanner is able to put anywhere from 8 to 40 measurements per square metre on the ground. The additional element of oblique angle scanning (both 7 degrees forward and 7 degrees back from nadir) allows a significant reduction in occlusions/shadow effects and resulting in better vegetation penetration and a more complete LiDAR data set.

Line Scan Imagery
FLI-MAP 400 contains an additional line scan camera which is used to provide true color values to each laser point (Red, Green and Blue attributes can be written to the laser data points). Colorized laser data aids LiDAR interpretation and can be used to produce orthophotography.

Digital Still Imagery
Two digital high-resolution photo cameras are mounted alongside the video cameras in the down and forward- looking perspectives. Both cameras are configured to capture one image approximately every second. Image resolution achieved on a typical mission is 3-10 cm per pixel, depending on the survey altitude (11.0 Megapixel (4000 x 2672) camera resolution). Images can be fused with the laser data to supply geo-referenced and ortho- rectified images.

Video Imagery
Two rigid mounted, fixed focus digital video cameras (one facing forward at an oblique angle and one facing down) are slaved to GPS time. Video streams are recorded in digital MPEG-4 (avi) format. 720 x 576 pixel resolution. Video imagery may be viewed directly in 3rd party software applications (PLS-CADD, Arc Map) using Fugro's DV Controlled software plug-in.

Ortho rectified image mosaics
Using the FLI-MAP or ADS40 imagery systems allows Fugro SESL to create high quality, high-resolution orthorectified imagery. The FLI-MAP system can produce orthomosaics from the digital still imagery at a stunning 5 to 15 cm (ground) per pixel allowing for detailed feature mapping. The FLI-MAP system can also produce faster and more economical image mosaics from the Line Scan imagery at a lesser image resolution (equal to the LiDAR data point resolution).