Lightweight Airborne Laser Scanner with Online Waveform Processing

RIEGL VUX-1LR®

• 15 mm survey-grade accuracy• scan speed up to200 scans / second• PRR values freely selectable• measurement rate up to
1,500,000 meas./sec(@ 1500 kHz PRR & 360° FOV)
• operating flight altitude
more than 3,440 ft• field of view up to 360° for practicallyunrestricted data acquisition• regular point pattern,
perfectly parallel scan lines• cutting edge RIEGL technology
providing:- echo signal digitization- online waveform processing- multiple-time-around processing• multiple target capability up to 15 target echoes• compact (227x180x125 mm),lightweight (3.5 kg), and rugged• easily mountable to helicopters,
gyrocopters, and other smallmanned aircrafts• mechanical and electricalinterface for IMU mounting• electrical interfaces for GPS data
string and Sync Pulse (1PPS)• LAN-TCP/IP interface• internal data storage on
Solid State Disc SSD, 1 TByte

22

The RIEGL VUX-1LR22 is a very lightweight and compact laser scanner,
meeting the challenges of airborne laser scanning by helicopter,
gyrocopter, and other small aircraft both in measurement performance as well as in system integration.
With regard to the specific constraints and flight characteristics, theRIEGL VUX-1LR22 is designed to be mounted in any orientation andeven under limited weight and space conditions. Modest in power
consumption, the instrument requires only a single power supply.
The entire data set of an acquisition campaign is stored onto aninternal 1 TByte SSD and/or provided as real-time line scan data via theintegrated LAN-TCP/IP interface.
The RIEGL VUX-1LR22 provides highspeed data acquisition using a narrowinfrared laser beam and a fast line scanning mechanism.
High-accuracy laser ranging is based on RIEGL´s unique echo digitization and online waveform processing, which enables achieving superior
measurement results even under adverse atmospheric conditions, andthe evaluation of multiple target echoes. The scanning mechanism isbased on an extremely fast rotating mirror, which provides fully linear,
unidirectional and parallel scan lines, resulting in excellent regular point
pattern.

Typical applications include• Corridor Mapping:Power Line, Railway Track andPipeline Inspection• Topography in Open-Cast Mining• Terrain and Canyon Mapping• Surveying of Urban Environments• Archeology and Cultural
Heritage Documentation• Agriculture & Forestry• Resources Management• Rapid Response in Small ScaleSurveying (Collision Investigation,Risk Prevention)

visit our website
www.riegl.com

Airborne Laser Scanning

Data SheetTechnical Data RIEGL VUX®-1LR22Laser Product Classification

Class 1 Laser Productaccording to IEC 60825-1:2014

The following clause applies for instruments delivered into the United States:
Complies with 21 CFR 1040.10 and 1040.11 except for conformance withIEC 60825-1 Ed.3., as described in Laser Notice No. 56, dated May 8, 2019.

Range Measurement Performance
Measuring Principle

Laser Pulse Repetition Rate PRR 1) 2)
Max. Measuring Range 3) 4)
natural targets  ≥ 20 %natural targets  ≥ 60 %natural targets  ≥ 80 %Max. Operating Flight Altitude AGL 1) 5)@  ≥ 20 %				@  ≥ 60 %				
Max. Number of Targets per Pulse 6)

time of flight measurement, echo signal digitization,
online waveform processing, multiple-time-around-processing
50 kHz200 kHz400 kHz600 kHz800 kHz

1200 kHz 1500 kHz

1000 m1630 m1845 m600 m
1000 m1140 m

435 m
730 m
830 m

355 m
600 m
690 m

310 m
525 m
600 m

255 m
435 m
500 m

230 m		
390 m
445 m

640 m
(2110 ft)
1050 m(3440 ft)
15

390 m
(1270 ft)
640 m
(2110 ft)
15

280 m
(920 ft)
470 m(1540 ft)
15

230 m
(750 ft)
390 m(1270 ft)
15200 m(650 ft)
340 m(1110 ft)
11160 m(540 ft)
280 m(920 ft)
7

150 m(490 ft)
250 m(820 ft)51) Rounded values.
2) Setting of intermediate PRR values possible.
3) Typical values for average conditions. Maximum range is specified for flat targets with size in excess of the laser beam diameter, perpendicular angle of incidence, and foratmospheric visibility of 23 km. In bright sunlight, the max. range is shorter than under overcast sky.
4) Ambiguity to be resolved by post-processing with RiUNITE software.
5) Flat terrain assumed, scan angle ±45° FOV.
6)	If more than one target is hit, the total laser transmitter power is split and, accordingly, the achieveable range is reduced.

Minimum Range
Accuracy 7) 9)
Precision 8) 9)
Laser Pulse Repetition Rate 1) 10)
Max. Effective Measurement Rate 1)
Echo Signal Intensity
Laser Wavelength
Laser Beam DivergenceLaser Beam Footprint (Gaussian Beam Definition)

3m @ PRR ≤ 500 kHz, 2m @ 500 kHz < PRR < 1 MHz, 1.5m @ PRR ≥ 1 MHz
15 mm
5 mm
up to 1500 kHzup to 1 500 000 meas./sec. (@ 1500 kHz PRR & 360° FOV)
for each echo signal, high-resolution 16 bit intensity information is provided
near infrared
typ. 0.35 mrad @ 1/e 11), typ. 0.5 mrad @ 1/e² 12)
50 mm @ 100 m, 250 mm @ 500 m, 500 mm @ 1000 m7) Accuracy is the degree of conformity of a measured quantity
to its actual (true) value.
8) Precision, also called reproducibility or repeatability, is thedegree to which further measurements show the same result.
9) One sigma @ 150 m range under RIEGL test conditions.

10) User selectable, setting of intermediate PRR values possible.
11) Measured at the 1/e points. 0.35 mrad corresponds to an increase of 35 mm of beam diameterper 100 m distance.
12) Measured at the 1/e² points. 0.50 mrad corresponds to an increase of 50 mm of beam diameterper 100 m distance.

Scanner Performance

Scanning Mechanism
Field of View (selectable)
Scan Speed (selectable)
Angular Step Width   (selectable)

rotating mirror
up to 360° 13)
10 - 200 revolutions per second, equivalent to 10 - 200 scans/sec
0.002° ≤   ≤ 1.5°

Angle Measurement Resolution
Internal Sync Timer
Scan Sync (optional)

0.001°
for real-time synchronized time stamping of scan data
scanner rotation synchronization

between consecutive laser shots

Data Interfaces

Configuration / Scan Data Output
GNSS Interface
Internal Data Storage
Memory Card Slot 14)External Camera
External GNSS Antenna

General Technical Data

Power Supply Input Voltage / Consumption 16)
Main Dimensions 17)

11 - 34 V DC / typ. 65 W

VUX-1LR without / with Cooling Fan

227 x 180 x 125 mm / 227 x 209 x 129 mm

VUX-1LR without / with Cooling Fan

approx. 3.5 kg / approx. 3.75 kg
max. 80 % non condensing @ 31°C
IP64, dust and splash-proof
16 500 ft (5 000 m) above MSL / 18 000 ft (5 500 m) above MSL-20°C19) up to +40°C (operation) / -20°C up to +50°C (storage)

Weight 17)

Humidity
Protection ClassMax. Flight Altitude (operating / not operating)Temperature Range 18)

Optional Components (integrated)
Embedded GNSS-Inertial System

13) slightly degraded ranging performance around 0°/360°
14) applies to IMU APX-20 UAV only
15) CFast is a registered trademark of CompactFlash Association16) without external IMU/GNSS, cooling fan device not in operation17) without external IMU/GNSS

2

LAN 10/100/1000 Mbit/sec / LAN 10/100/1000 Mbit/sec or USB 2.0
Serial RS-232 interface for data string with GNSS-time information,TTL input for 1PPS synchronization pulse
1 TByte SSDfor CFAST® 15) memory card 120 GByte (can be upgraded to 256 GByte)
TTL input/output
SMA connector

high performance multi-channel GNSS receiver,low-grade, solid-state MEMS IMU18) The instrument requires air convection with a minimum flow rate of 5 m/s for continuous operation at +15 °C andabove. If the necessary flow rate cannot be provided by the moving platform, the cooling fan device (includedin the scope of delivery) has to be used.
19) Contininous scanning operation if instrument is powered on while internal temperature is at or above 0°C andstill air. Insulating the scanner with appropriate material will enable operation at even lower temperatures.

Copyright RIEGL Laser Measurement Systems GmbH © 2021– All rights reserved.

Data SheetMaximum Measurement Range & Point Density RIEGL VUX®-1LR22
PRR = Laser
50 kHzPRR = 50kHz, laser power level 75%

4210

1150

3790

1600

1020

3370

1400

899

2950

1200

771

1000

642

800

514

0

1040

50

60

Target Reflectance [%]70

white marble

MTA1

white plaster work, limestone

cliffs, sand, masonry

30

construction concrete

20terra cotta

0deciduous trees

200

dry asphaltwet ice, tar paper

400

coniferous trees

600

dry snow

Max. Measurement Range [m]

1800

8090

Operating Flight Altitude [ft]1280

visibility 23 km
visibility 15 km
visibility 8 km

Operating Flight Altitude [m]

2000

2530
2100
1680

385

1260

257

843

128

421

00[m/s]Operating flight altitude AGL given for the following conditions:
FOV +/- 45°, target size ≥ laser footprint

Example: VUX-1LR22 at 50,000 pulses/second, speed = 70 m/s,
range to target = 602 m, resulting point density ~ 0.19 pts/m²

PRR =200 kHz
Laser
PRR = 200kHz, laser power level 100%
visibility 23 km
visibility 15 km
visibility 8 km

1100

900707

2310

642

2100

578

1890

700

449

1470

600

385

1260

500

321

1050

257

843

192

632

128

421

64

210

00

MTA1

60

70

80

400

0

102030terra cotta

deciduous trees

0

dry asphalt

100

coniferous trees

200

dry snow

wet ice, tar paper

300

4050

Target Reflectance [%]white marble

1680

white plaster work, limestone514

cliffs, sand, masonry

800

2530

Operating Flight Altitude [m]MTA2

construction concreteMax. Measurement Range [m]

1000

771

Operating Flight Altitude [ft]120090[m/s]Operating flight altitude AGL given for the following conditions:
FOV +/- 45°, target size ≥ laser footprint

Laser
PRR =400 PRR
kHz = 400kHz, laser power level 100%

578

1890

546

1790

514

1680

482

1580

700

449

1470

650

417

1370

600

385

1260

550

353

1150

500

321

1050

450

289

948

257

843

350

224

738

300

192

632

160

527

128

421

96

316

64

210

32

105

00

800

MTA30

1030

4050

MTA1

60

70

80

Target Reflectance [%]white marble

20

white plaster work, limestone

0terra cotta

50

deciduous trees

100

dry asphalt

150

coniferous trees

wet ice, tar paper200

dry snow250

cliffs, sand, masonry

MTA2

400

construction concreteMax. Measurement Range [m]750Operating Flight Altitude [m]visibility 23 km
visibility 15 km
visibility 8 km

850

90

Operating flight altitude AGL given for the following conditions:
FOV +/- 45°, target size ≥ laser footprint

Data Sheet

Operating Flight Altitude [ft]900

Example: VUX-1LR22 at 200,000 pulses/second, speed = 60 m/s,
range to target = 438 m, resulting point density ~ 1.2 pts/m²[m/s]

Example: VUX-1LR22 at 400,000 pulses/second, speed = 70 m/s,range to target = 248 m, resulting point density ~ 3.6 pts/m²

Copyright RIEGL Laser Measurement Systems GmbH © 2021– All rights reserved.

3Maximum Measurement Range & Point Density RIEGL VUX®-1LR22Laser
PRR =600 PRR
kHz = 600kHz, laser power level 100%

482

1580

449

1470

417

1370

600

385

1260

550

353

1150

321

1050

450

289

948

400

257

843

350

224

738

300

192

632

160

527

128

421

96

316

64210

32

10500

visibility 23 km
visibility 15 km
visibility 8 km

700010304050

MTA1607080

Target Reflectance [%]white marble

20terra cotta

0

deciduous trees

50

dry asphalt

100

coniferous trees

wet ice, tar paper

150

dry snow200

white plaster work, limestone250

cliffs, sand, masonry

MTA2

Operating Flight Altitude [m]

MTA3

500

construction concreteMax. Measurement Range [m]

650

90

Operating Flight Altitude [ft]750[m/s]Operating flight altitude AGL given for the following conditions:
FOV +/- 45°, target size ≥ laser footprint

PRR Laser= 800 PRR
kHz = 800kHz, laser power level 100%

4171370385

1260

353

1150

321

1050

289

948

257

843

350

224

738

300

192

632

160

527

128

421

96

316

64210

32105

00

MTA4600

visibility 23 km
visibility 15 km
visibility 8 km

550

450

20304050

MTA1

white plaster work, limestone

10cliffs, sand, masonry0

construction concrete0terra cotta

50

deciduous trees

100

dry asphalt

wet ice, tar paper

150

coniferous trees

MTA2

200

60

70

80

Target Reflectance [%]white marble

250

Operating Flight Altitude [m]MTA3400

dry snow

Max. Measurement Range [m]

500

90

Operating Flight Altitude [ft]650Example: VUX-1LR22 at 600,000 pulses/second, speed = 60 m/s,range to target = 190 m, resulting point density ~ 8.4 pts/m²[m/s]

Operating flight altitude AGL given for the following conditions:
FOV +/- 45°, target size ≥ laser footprintLaser
PRR
PRR= 1200kHz= 1200kHz, laser power level 100%353
550
MTA5visibility 23 km
visibility 15 km
visibility 8 km

321

1050

289

948

400

257

843

350

224

738

192

632

160

527

128

421

96

316

64210

3210500300

Operating Flight Altitude [m]MTA4MTA3200

1030

terra cotta204050

MTA1

white plaster work, limestone

0deciduous trees

0dry asphalt

50

coniferous trees

100

dry snow

wet ice, tar paper

150

cliffs, sand, masonry

MTA2

60

70

80

Target Reflectance [%]white marble

250

construction concreteMax. Measurement Range [m]

450

90

Operating flight altitude AGL given for the following conditions:
FOV +/- 45°, target size ≥ laser footprint

41150

Operating Flight Altitude [ft]500

Example: VUX-1LR22 at 800,000 pulses/second, speed = 80 m/s,
range to target = 165 m, resulting point density ~ 9.7 pts/m²[m/s]

Example: VUX-1LR22 at 1,200,000 pulses/second, speed = 60 m/s,range to target = 129 m, resulting point density ~ 25 pts/m²

Copyright RIEGL Laser Measurement Systems GmbH © 2021– All rights reserved.

Data SheetMaximum Measurement Range & Point Density RIEGL VUX®-1LR22PRR
PRRLaser= 1500
kHz= 1500kHz, laser power level 100%
305

1000

289

948

273

896

257

843

375

241

790

350

224

738

208

685

192

632

275

176

579

250

160

527

225

144

474

128

421

112

369

96

316

80

263

64

210

48

158

32105

165200425

MTA5325

MTA4300

cliffs, sand, masonry

MTA2MTA1

white plaster work, limestone

175

607080150

00102030

terra cotta

25

deciduous trees

50

dry asphalt

75

coniferous trees

wet ice, tar paper

100

dry snow

125

4050

Target Reflectance [%]white marble

MTA3200

construction concreteMax. Measurement Range [m]400Operating Flight Altitude [m]visibility 23 km
visibility 15 km
visibility 8 km

45090

Operating Flight Altitude [ft]475[m/s]Operating flight altitude AGL given for the following conditions:
FOV +/- 45°, target size ≥ laser footprint

Example: VUX-1LR22 at 1,500,000 pulses/second, speed = 60 m/s,
range to target = 106 m, resulting point density ~ 38 pts/m²

Dimensional Drawings RIEGL VUX®-1LR22
all dimensions in mm

bottom view

front viewside view

rear view

RIEGL VUX®-1UAV22 with Cooling Fan Device
front view

Data Sheetside view

rear view

Copyright RIEGL Laser Measurement Systems GmbH © 2021– All rights reserved.

5RIEGL VUX®-1LR22 Additional Equipment and Integration
Additional Equipment for RIEGL VUX-1LR22Cooling FanLightweight structure with two axial fans providing forced air convection forapplications where sufficient natural air flow cannot be guaranteed. Powersupply is provided via a connector on the rear side of the RIEGL VUX-1LR22.
The cooling fan can be mounted either on the top side or on the bottomside of the RIEGL VUX-1LR22 and is included in the scanner‘s scope of delivery.
The cooling fan has to be mounted whenever the environmental conditions/temperatures require (see ”temperature range” on page 2 of this datasheet).

Cooling Fan

Protective CapTo shield the glass tube of the RIEGL VUX-1LR22 from mechanical damage
and soiling, a protective cap is provided to cover the upper part of theinstrument during transport and storage.

Options for RIEGL VUX-1LR22 Integration
RIEGL provides user-friendly, application- and installation-oriented solutions
for integration of the VUX-1LR22 LiDAR sensor:
RIEGL VUX-1LR22 with Protective Cap• RIEGL VUX-SYS
Complete airborne laser scanning system for flexible use in UAS/UAV/RPAS,helicopter, gyrocopter and ultra-light aircraft installations comprising theRIEGL VUX-1LR22, an IMU/GNSS unit and a dedicated control unit.
• RIEGL VP-1
Small and lightweight pod with integrated RIEGL VUX-SYS to be mounted
on standard hard points and typical camera mounts of manned helicopters• RiCOPTER
Ready to fly remotely piloted aircraft system with RIEGL VUX-SYS integrated
Details to be found on the relevant datasheets and infosheets.

RIEGL VUX-1LR22 with external IMU-Sensor(RIEGL VUX-SYS)

Multiple-Time-Around Data Acquisition and Processing
In time-of-flight laser ranging a maximum unambiguous measurement rangeexists, which is defined by the laser pulse repetition rate and the speed oflight. In case the echo signal of an emitted laser pulse arrives later than theemission of the subsequently emitted laser pulse, the range result becomesambiguous - an effect known as „Multiple-Time-Around“ (MTA).

Field of View(FOV)
360°

MTA 1
MTA 2
MTA 3

The RIEGL VUX-1LR22 allows ranging beyond the maximum unambiguous
measurement range using a sophisticated modulation scheme applied tothe train of emitted laser pulses. The dedicated post-processing softwaremodule RiUNITE provides algorithms for multiple-time-around processing,which automatically assign definite range results to the correct MTA zones
without any further user interaction required.

MTA 4MTA 5RIEGL Laser Measurement Systems GmbHHorn, Austria
Phone: +43 2982 4211 | www.riegl.com
RIEGL USA Inc.
Winter Garden, Florida, USA
Phone: +1 407 248 9927 | www.rieglusa.com

RIEGL Japan Ltd. | www.riegl-japan.co.jp
RIEGL China Ltd. | www.riegl.cn
RIEGL Australia Pty Ltd. | www.riegl.com
RIEGL Canada Inc. | www.rieglcanada.com
RIEGL UK Ltd. | www.riegl.co.uk

www.riegl.com
Copyright RIEGL Laser Measurement Systems GmbH © 2021 – All rights reserved.
Use of this data sheet other than for personal purposes requires RIEGL’s written consent.
This data sheet is compiled with care. However, errors cannot be fully excluded and alternations might be necessary.

Preliminary Data Sheet, RIEGL VUX-1LR22, 2021-09-07