Leica - Airborne Digital Sensors (ADS80, ALS60) Update / News in the context of Remote Sensing applications

Transcription

1 Luzern, Switzerland, acquired with GSD=5 cm, Leica - Airborne Digital Sensors (ADS80, ALS60) Update / News in the context of Remote Sensing applications Arthur Rohrbach, Sensor Sales Dir Europe, Middle-East and Africa (EMEA) JRC-GeoCAP Meeting, Taormina, Nov 2009

2 Leica <> Airborne Digital Sensors Update ADS80 - Airborne Digital Sensor Update <> Fast Data Processing (XPro) High Res Mode (HR) ALS60 - Airborne LIDAR Scanner Update <> Outlook Grid approach data processing Full Wave Form Digitizing (WFD)

3 ADS40 SH52 in Beech 2006 ( Geophenix, France )

4 Leica ADS80 The Total Digital Airborne Imaging Solution

5 Leica ADS80 - Pushbroom / CCD layout in focal plane SH81 SH82

6 Leica ADS80-3 rd generation -System Design / Concept One optical path Tight integration Very few components => Highest Stability

7 Leica ADS80 - Optical Design / Performance + = Telecentric Lens Thermal and Pressure + Tetrachroid = Equal Resolution Co-registered in Compensated all bands NO PAN-SHARPENING

8 Narrow Spectral band for Remote Sensing 1 2 Legend 1 Grass 2 Lime Stone Sand, dry 4 Snow, old 5 Fir tree 6 Asphalt, wet 7 Water

9 Leica ADS80 Consistent Technical Performance Control Unit CU80 and MM80 MM40 Embedded IPAS20 with GNSS High data throughput of 130 MB/sec Radiometric resolution of compressed data 10-bit and 12-bit Recording interval 1 ms Data modes: ADS80 data format, raw data, compressed Highlyreliable flash disk technology 364 GB / 768 GB capacityper MM80 / per pair Weight 2.5 kg

10 Leica ADS80 - Operational Specs / Performance GSD 1.2 / 3 cm => 90 kts GSD 2 / 5 cm => 140 kts GSD 3 / 7.5cm => 190 kts GSD 4 / 10cm => 240 kts GSD 6 / 15cm => 300 kts 768 GB for up to ~ 11.4 h recording at 2.5 ms with 3 pan & 4 spectral bands

11 New gyro-stabilized sensor mount PAV80 Fastest in stabilizing speed Larger tilt angles available Different payloads accepted Stabilization range in roll Stabilization range in pitch Stabilization range in drift -7 to to to + 30

12 Leica ADS80 Consistent Technical Performance Mapping accuracies vs GSD

13 Simultaneous Imagery Luzern, Switz ( Pixel Carpets )

14 Efficient Data Processing with Leica XPro Processing at the Speed of Flight

15 Data post processing time Leica XPro workflow Flight 1,200 km 2, 15cm GSD 12 lines, each 80 km, 3 Pan and 8MS Approximately 7h flight at 130knots Total time WS with 6 server cluster User action time Download 400 GB ADS data format 4 h 0.5 h Georeferencing Trajectory calculation geo-referencing of L0 images 0.5 h 0.1 h 0.5 h 0.1 h Aerial triangulation Automatic Point Measurement Bundle Adjustment 0.1 h 0.3 h 0.1 h 0.3 h Ortho photo RGB or FCIR 1,200 km h 0.1 h 6.7 h 1.6 h Feature extraction Due to image strips slightly faster than in traditional workflow Fly-through Similar to traditional workflow

16 Data post processing time Leica XPro workflow Flight 1,200 km 2, 50 cm GSD 12 lines, each 80 km, 3 Pan and 8MS Approximately 7h flight at 130knots Total time WS with 6 server cluster User action time Download 40 GB ADS data format 30 Georeferencing Trajectory calculation geo-referencing of L0 images 3 2 Aerial triangulation Automatic Point Measurement Bundle Adjustment 5 20 Ortho photo RGB or FCIR 1,200 km h Feature extraction Due to image strips slightly faster than in traditional workflow Fly-through Similar to traditional workflow

17 Leica ADS80 - HR Mode via staggered Nadir Pan SH81 SH82

18 Leica <> Airborne Digital Sensors Update ADS80 - Airborne Digital Sensor Update <> Fast Data Processing (XPro) High Res Mode (HR) ALS60 - Airborne LIDAR Scanner Update <> Outlook Grid approach data processing Full Wave Form Digitizing (WFD)

19 Leica ALS60 Airborne LIDAR Scanner a complete airborne data collection solution

20 Fundamentals of multiple-return technology example for 1- and 3-return scenarios 1 st return from tree top 1 st (and only) return from ground 2 nd return from branches 3 rd return from ground

21 Fundamentals of MPiA technology Single-pulse technology limits pulse rate

22 Fundamentals of MPiA technology MPiA allows doubling of pulse rate

23 ALS60 - Improvements in max Pulse Rate making a great LIDAR even better 33% increase in maximum pulse rate 200 khz at the ground for even higher point density Smooth operating envelope without discontinuities Max Pulse Repetition Frequency (PRF, 40 deg FOV) pulses in air 1 pulse in air Flight Height (m)

24 ALS60 the point density you want, the accuracy you need

25 ALS60 the point density you want, the accuracy you need

26 ALS60 the point density you want, the accuracy you need

27 Large optical aperture the heart of a flexible system

28 Starting point point cloud block loaded All returns shown Ortho point cloud view Color coded by elevation

29 Comparison of rendered 1 st returns to point cloud point cloud gridded

30 Comparison of rendered last returns to point cloud point cloud gridded

31 Bare earth extraction point cloud gridded

32 Building extraction point cloud gridded

33 Tree extraction point cloud gridded

34 Forest extraction point cloud gridded

35 LIDAR waveform how is it created? Multiple return pulses are generated as the laser pulse hits various levels in the forest canopy, creating in total a complete return waveform Footprint Waveform measurement is a natural extension of the conventional discretereturn + intensity measurement process Return waveform is generated by all reflective surfaces within the laser footprint

36 Full Waveform Digitization (FWD) basic concept Laser Footprint Start Pulse Detector Signal T 1, I 1 T n, I n

37 Leica <> Airborne Digital Sensors Update ADS80 - Airborne Digital Sensor Update <> Fast Data Processing (XPro) High Res Mode (HR) ALS60 - Airborne LIDAR Scanner Update <> Outlook Grid approach data processing Full Wave Form Digitizing (WFD)

38 Dual Leica Sensor System ADS40 ALS50 ( Estonian Land Board )

39 Dual Leica Sensor System ADS80 ALS60 ( SwissTopo )

40 Thank you