Airborne Sensor Technology

Geospatial Solutions Division (GSD)

1TerraSolid – User Group Meeting, Levi, Finland – Feb 2012

Arthur Rohrbach – Airborne Sensor Manager EMEA

Airborne Sensor Technology


The World of Airborne Sensor Technology


Hexagon Geosystems – Leica & Z/I airborne solutions Imaging Sensors – DMC & ADS & RCD30 Laser Scanning – ALS 70 Outlook - Summary

Agenda

15.02.2012Autor 4Titel

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The Geospatial Solutions Division (GSD)


A Century of History with Zeiss & Leica

RC

RMK RMK

RC


7

… leading to a professional airborne sensor portfolio

Leica ADSPushbroom

Imaging

Z/I DMC IIFrame

Imaging

Leica RCDFrame

Imaging

Leica ALS

LIDAR


8

From imagery …


.. to popular web based information


.. to professional (thematic) mapping …


… to 3D modelling


.. almost equal to the real world


Hexagon Geosystems – Z/I & Leica airborne solutions Imaging Sensors – DMC & ADS & RCD30 Laser Scanning – ALS 70 Outlook - Summary

Agenda


overlapping aerial photographs

discrete perspective images

Digital frame camera DMCII

forward view

nadir view

backward view

continuous pushbroom scanning

Airborne digital sensor ADS80

Complementary Portfolio – Pushbroom & Frame


ADS 80Pushbroom

DMC IIFrame

Large Format Digital Cameras (ADS80 , DMC II)


Leica ADS80 Airborne Digital Sensor


Leica ADS80 - CCD layout in focal plane

SH91 SH92


Narrow Spectral band for Remote Sensing

1 Legend

1 Grass

2 Lime Stone

3 Sand, dry

4 Snow, old

5 Fir tree

6 Asphalt

7 Water

56

3

4

2

7


Leica ADS80 <> Best Imagery

RGNPAN RGB


•Multispectral Pan and RGBN sensor• Innovative beamsplitter designprovides equal resolution in all bands

• 12000 pixels, 6.5um, in all bands instandard mode (Ratio 1:1)

• 24000 pixel swath in HiRes Mode(Ratio 1:2)

• Focal length 65mm (single lens design)• 100% forward overlap at all times• Continously recordable strip length• Dedicated Workflow• Very Rapid orthoprocessing and AT• High accuracy for DSM extraction

Leica ADS80 Airborne Digital Sensor


1,200 km2, 15cm GSD12 lines, each 80 km, 3 Pan and 8 MSApproximately 7hr flight at 130knots

Flight

Download

Geo-referencing

Aerial triangulation

Ortho photo

Feature extraction

Fly-through

Trajectory calculationgeo-referencing of L0 images

Automatic Point MeasurementBundle Adjustment

RGB or FCIR 1,200 km2

Due to image strips slightly faster than in traditional workflow

400 GB ADS data format

WS with 6 server cluster

Similar to traditional workflow

0.5 h0.1 h

4 h

0.1 h0.3 h

1.7 h

6.7 h

Leica XPro for ADS - Rapid Orthoprocessing


ADS 80Pushbroom

DMC IIFrame

Large Format Digital Cameras (ADS80 , DMC II)


DMC II – First LF single PAN cone system


DMC opticsdesigned by Zeiss

DMC CCD sensordesigned by Dalsa

DMC II - Next Generation Sensor Design


With the unique DMC II Sensor Design

R

B

G

NIR

PAN


DMC II230 exceeds the footprint of the first DMC by >13%

• Multi spectral sensor, RGB and IR • 2.5:1 pan‐sharpened color resolution• FMC forward motion compensation• 2.2 second frame rate• Large base/height ratio of 0.36• 4x42 MPixel customized MSS CCD’s• 1x230 Mpixel customized PAN CCD• 15cm GSD from ~2500m flying height

DMC II230 – The LF Industry Standard


Medium Format Frame Camera (RCD30)

Leica RCD30


Medium format for photogrammetry?

• Multispectral, co-registered RGB and IR• Mechanical motion compensation, 2 axes• >1 second frame rate• two focal lengths, exhangeable (50mm, 80mm)• Stabilized lens system• High accuracy mapping range• Exchangeable central shutter• B/H ratio of 0.32 @ 60% overlap (50mm)• 2 x 60 MPx, 6um CCD for RGB and NIR• CC3x can control up to five CH6x• Image size single head 8956 x 6708• Image size dual head 13216 x 8956• 15cm GSD @ 3780ft flying height (50mm)• CCD made by DALSA (60 MPx)• Optics made by Zeiss• Weight CH6x 4 kg, CC3x 6kg


Images - FCIR


Hexagon Geosystems – Z/I & Leica airborne solutions Imaging Sensors – DMC & ADS & RCD30 Laser Scanning – ALS 70 Outlook - Summary

Agenda


Laser Scanner – Leica ALS70 Product Line


What is ALS70? Various models available?


ALS70 Specifications


Leca ALS70 - Major components

LS70‐LP Laser Scanner SC70 System Controller

LC60 Laser Controller

OC50 Pilot Display

GI40 Guidance Indicator

OC52 Operator Display

MM70 Mass Memory


ALS70 - capabilities Intensity image, Bregenz, Germany, 11 Mar 2011, 2300 m AGL, 40 deg

FOV (sine), 25 Hz scan rate, 119 kHz pulse rate (MPiA), installed on PAV80 mount, 2 points/m2 (~70 cm post spacing)


ALS70 - capabilities Fused class/intensity image, Fitchburg, MA (USA), September 2010,

1000 m AGL, 40 deg FOV (sine), 25 Hz scan rate, 500 kHz pulse rate (MPiA), ~10 points/m2, 870 m swath


Major new technologies in ALS70

Point Density Multiplier – doubling productivity Multiple scan patterns new range counting circuitry Pulse rates closer to “speed of light” limit for given flying height

(all models) Dual-output scanner doubles effective pulse rate and scan rate

(ALS70-CM and ALS70-HP only) Laser output split into two beams (slight forward/rearward look)Dual receiversAutoscan feature monitors flying height and speed over ground &

adjusts scan rate to help to keep scan patterns out-of-phase with one another

Multiple scan patterns (sine, triangle and raster) for greater flexibility

Increased receiver bandwidth and dynamic range, for better detection of small and/or low-reflectivity surfaces(e.g., power lines, fresh asphalt)


Single-path scanning limits along-track spacing


Dual-output scanning doubles scan rate, pulse rate


SPiA technology limits pulse rate

1 3 5

2 4


MPiA technology allows doubling of pulse rate

1 3

3

52

2

4

4 5


Multiple scan patterns for maximum flexibility


ALS70 family – RCD30 typical mounting (2/2)


Leica ALS70 workflow – From preflight to point clouds

Planning Collection Ground Processing

MissionPro

FCMS

IPAS TCIPAS CO

ALS pp


Leica “ MissionPro “ ( / FPES)

Footprint planning AOI - Block, Corridor Flight line Event (Photo)

Footprint flight Flight line Event (Photo)

AOI, hilly terrain

Single line, mountainous terrainCorridor, Route mode

Flight Planning & Evaluation SW – Footprint on DTM


Leica “ FCMS “ - Mission Execution HW & SW (1/2)

Navigation and graphical guidance information including suggested flightpath is displayed during all phases of the survey flight North-up view for project overview and to control progress in flight

execution Nose-up view for optimized approach and turns In-line view for precise navigation along the line

Vector map as a backdrop on North-up and Nose-up view

North-up view Nose-up view In-line view

High-precision, GNSS-supported flight navigation


Leica “ FCMS “ - Mission Execution HW & SW (2/2)

Navigation and graphical guidance information in 3-D Optimized for corridor mapping with helicopter

3-D view during approach and turns 3-D view along the line

New 3-D navigation view


ALS70 workflow

MissionPro/ FPES

Mission Planningmodealtitudescan rateFOVflight speedflight linesflight height

record DGPS base station data

Airborne Operations

record position and attitude data•GPS•IMU

record scanner data•range•scan angle•intensity•timing info

extract position

and attitude

data

DGNSS processing

trajectoryprocessing

•point cloud generation•output formatting – LDI, LAS, ASCII•projection - WGS 84, UTM, state plane, Swiss, TW 97, user-supplied•datum (state plane only) - NGVD 29, NAVD 88

•tiling•coverage verification•outlier removal•bare earth•thinning•catenary generation

deliverables

Ground Operations

Planning Collection Processing

real-time nav file

*.SCN raw scanner files

ALS, FCMS

IPAS TC IPAS TC

ALS Post Processor

position and

attitude file

GPS

TerraScan

IPAS TC

MicroStation

•TIN/contour•control report

TerraModeller

laser boresitecalibration

Attune

“LAS” file


Leica ALS70 workflow (MFC workflow items in amber)

MissionPro/ FPES

Mission Planningmodealtitudescan rateFOVflight speedflight linesflight heightlens FLshutter speedframe rate

record DGPS base station data

Airborne Operations

record position and attitude data•GPS•IMU•event marksrecord scanner data•range•scan angle•intensity•timing info

record camera data•photo ID file•raw frames

extract position

and attitude

data

DGPS processing

trajectoryprocessing

•point cloud generation•output formatting – LDI, LAS, ASCII•projection - WGS 84, UTM, state plane, Swiss, TW 97, user-supplied•datum (state plane only) - NGVD 29, NAVD 88

•tiling•coverage verification•outlier removal•bare earth•thinning•catenary generation

deliverables

Ground Operations

Planning Collection Processing

real-time nav file

*.SCN raw scanner files

ALS, FCMS, RCD

IPAS TC IPAS TC

ALS Post Processor

position and

attitude file

GPS

TerraScan

IPAS TC

MicroStation

•TIN/contour•control report

TerraModeller

laser boresitecalibration

Attune

calculate exterior

orientations

EO fileIPAS CO

camera boresight, orthophotogeneration

WFM

“LAS” file

orthophotosBayer

conversion

WFM


Hexagon Geosystems – Z/I & Leica airborne solutions Imaging Sensors – DMC & ADS & RCD30 Laser Scanning – ALS 70 Outlook – Summary

Agenda


Leica & Z/I System Design – Today

FPESFCMS IPAS 20PAV 80

ADS ALS RCD

XPro

LPS

T‐Solid

Z/I MissionZ/I Inflight/Track

POS AV 510Z/I Mount

DMC

PPS

Image Station

DMC II

PPS

Image Station

Frame Pro

LPS

Flight PlanningFlight Management

Mount

GNSS/IMU


DPW / Image Processing / GIS / Decision Making

RequiredData &

Application

Customer‘sBusinessModel

PPSFrame Pro XPro TerraSolid

Flight Planning

Flight Management

Mount

GNSS/IMU

Hexagon Airborne System Design – Tomorrow


Dual Leica Sensor System “ ADS80 – ALS70 ”


“ A highly Automated Production Workflow ”Complete Solutions – Excellent brands – One Vendor

Hexagon Geosystems - Airborne Technology


Thank you

Documents

Airborne Sensor Technology