Woolpert & New Geospatial Technologies May 12, 2015 IN GIS Conference Ignite! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Woolpert and Technologies Woolpert believes that geo-spatial technologies and methods are rapidly changing. We have to embrace such changes in order to provide our clients with more affordable products without compromising quality.

Single Photon Counting and Geiger Mode Lidar It is like a Laser-based Digital Camera

spot Image received at the single anode source laser pulse spot Image received at the single anode Linear Lidar One-to-one Photon Counting Lidar One-to-many

Single Photon Counting and Geiger Mode Lidar Transmitter is a low-energy (few mJ), high rep-rate. Diffractive Optical Element (DOE) splits pulse output into 100 beamlets in a 10 x 10 array. Returns from individual beamlets are imaged telescope onto one anode of a 10x10 segmented anode. Each anode output is input to one channel of a 100 channel, high resolution, multi-stop timer to form a 100 pixel 3D image on each pulse. Example: (100 pixels @ 20 kHz = 2 million 3D pixels/sec).

Advantage of Single Photon Counting Lidar Ability to fly higher and faster. Provides an extremely dense surface model. Better penetration in trees, vegetation, fog, and clouds. Each range measurement requires only one detected photon as opposed to hundreds or thousands in conventional laser pulse time of flight (TOF) or waveform digitizing altimeters.

Comparison between Conventional and Single Photon Counting Lidar GSD Conventional Lidar Photon Counting Lidar 0.40m 1m 2m 1m** FOV 15 40 28 Flying Altitude (m) 1,828 2,377 3,047 4,572 7,620 Swath width (m) 481 1,730 2,218 2,300 3,818 Ground speed (knot) 150 170 1) ** Sigma space parameters for 1m post spacing is extrapolated based on the 0.40m post spacing parameters 2) at 0.40m post spacing, Sigma Space photon counting system is 487% more productive in collection rate than conventional Lidar 3) at 1.0m post spacing, Sigma Space photon counting system is 221% more productive in collection rate than conventional Lidar Woolpert Proprietary and Confidential

BuckEye2 Program at a Glance The Army Geospatial Center (AGC) was tasked with: “Research, Design, and Field Extended Capabilities of USACE Buckeye and other Aerial Data Collection Systems” (W5J9CQ-11-C-0007, 2010-2013) “Research, Design and Field TUAS**-Based High-Resolution Data Collection and Mapping Capability to Provide IMINT to DoD, DA, and USACE Planning, Training, and Operations” (W5J9CQ-13-C-0010, 2013 – Present ** TUAS: Tactical Unmanned Aircraft System Woolpert Proprietary and Confidential

Woolpert Mission on BuckEye2 Program Advancements: Advanced high altitude single photon LiDAR (SPL) and EO co-collection system Data Specifications: Multi-platform TUAS or manned platform design >1000 sq. km per day Density: 12 ppsm after filtering & adjustment .5m gridded elevation products Color orthophotography 24hr LiDAR PED Accuracy: Vertical: RMSE = 20cm Horizontal: RMSE = 1 m Woolpert Proprietary and Confidential

Woolpert Commercial Version of the Single Photon Counting Lidar Woolpert test flew a new photon counting Lidar called “Hercules” It is a circular scanning LiDAR Provides point cloud density of 8 to 12 pts/m2 from a single pass

Capability of Photon Counting Lidar System BuckEye2 Program, Altitude 25,000’ Woolpert Proprietary and Confidential

1.6 Km swath, 8 -12 points/sq m, 180 Knts, single pass HRQLS Data Sample 1.6 Km swath, 8 -12 points/sq m, 180 Knts, single pass Coal Mine Site in Garret County , MD

1.6 Km swath, 8 to12 points/sq m, 180 Knts, single pass HRQLS Data Sample 1.6 Km swath, 8 to12 points/sq m, 180 Knts, single pass Coal Mine Site in Garret County , MD

Photon Counting Advantage: Urban Area Mapping Sample Lidar data with point density = 6.5 pts/m2 

Where we are heading with Lidar technologies? Increased demand for Lidar data in general Increased demand for denser Lidar data: 8 ppm density Lidar data will be in popular demand within the next five years. Leica announced the ALS80 with pulse rate of 1,000,000 pps The commercial use of photon counting and Geiger mode lidar to start in the next few years