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Mobile Mapping System Specs

This document describes the specifications of a mobile laser scanning system. It has a laser scanner that can measure up to 420m with 5mm accuracy. It contains two IMU options - a MEMS IMU for position accuracy of 0.05m and a FOG IMU for position accuracy of <0.05m. It collects panoramic imagery with 6 cameras at 5fps. The system is contained within an aerodynamic protective pod and can be operated via touchscreen software for easy data capture, processing and output.

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0% found this document useful (0 votes)
81 views2 pages

Mobile Mapping System Specs

This document describes the specifications of a mobile laser scanning system. It has a laser scanner that can measure up to 420m with 5mm accuracy. It contains two IMU options - a MEMS IMU for position accuracy of 0.05m and a FOG IMU for position accuracy of <0.05m. It collects panoramic imagery with 6 cameras at 5fps. The system is contained within an aerodynamic protective pod and can be operated via touchscreen software for easy data capture, processing and output.

Uploaded by

Supriyo P
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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STANDARD SYSTEM PHYSICAL CHARACTERISTICS

Size 530 x 330 x 420mm


Weight Approx 13.kg

LASER SCANNER

Effective Measurement Rate 1000 kHz


Max. Range (For Reflectivity 80%) 420 m
Minimum Range 1.2 m
Accuracy 5 mm
Repeatability 3 mm
Max Field of View 360 deg
Scanning Speed 250 lines/second
Number of Targets Per Pulse Practically Unlimited
Eye Safety Class 1 Eye-safe

MEMS IMU (MICRO-ELECTRO-MECHANICAL GYRO)

Position 0.05 m Data Rate 400 Hz


Velocity 0.005 m/s Gyro-Bias 2 deg/h
Roll/Pitch 0.01 deg Gyro-RW 0.07 deg/sqrt(h)
True Heading 0.02 deg Accelerometer Bias 0.1 mg

FOG IMU (FIBRE-OPTIC GYRO)

Position <0.05 m Data Rate 512 Hz


Velocity 0.005 m/s Gyro-Bias 0.03 deg/h
Roll/Pitch 0.003 deg Gyro-RW 0.005 deg/sqrt(h)
True Heading 0.007 deg Accelerometer Bias 0.3 mg

TYPICAL INS ERROR OVER TIME WITHOUT GNSS

30 sec 60 sec 120 sec


MEMS 0.11 m 0.12 m 0.78 m
FOG 0.01 m 0.08 m 0.09 m

LADYBUG 3 LADYBUG 5

Sony icx27 4 ccdx6, 1/1.8”,4.4 µm Sony icx655 4 ccdx6, 2/3”,3.45 µm


Global Shutter Global Shutter
1600 x 1200 at 5fps jpg per sensor 2048 x 2448 at 5fps jpg per sensor
2.0MP per sensor 5.0MP per sensor

AVERAGE POINT CLOUD DENSITY (pts/sqm @ 5m range)

25 km/h 40 km/h 60 km/h 80 km/h 100 km/h


Single Scanner 4800 3000 2000 1500 1200
H A RDWA RE S OF T WA RE
PROTECTIVE POD CAPTURE SOFTWARE: DIGIVISU

StreetMapper IV comes inside a fiberglass protective POD, making it Designed to make data capture as easy as possible.
waterproof and aerodynamic. The POD comes ready to be attached to Operate the system via a simple touch screen interface including visual
roof bars. feedback of the data captured.
Two mount options are available:

Single Dual
Fixed x x AUTOMATED PROCESSING
Rotation x

Simplify and automate your data processing workflow.


LASER SCANNER MMProcess and TERRAoffice are used to export all collected GNSS
and IMU data and conduct all post-processing functions automatically.

A lightweight, compact, high performance laser scanner is fully


integrated in StreetMapper IV. Options include single or dual scanners.

NAVIGATION SYSTEM OUTPUT DATA GENERATION

Sensor data is managed and processed by MMProcess.


The navigation system allows for precise positioning of the system.
Export geo-referenced data into a multitude of different, user-defined
Components:
coordinate systems. Processing of trajectory and laser data can be
•• Inertial Measurement Unit (IMU) to measure velocity and automated using this, leading to reduced time and greater efficiency.
orientation with options:
Micro-electro-mechanical gyro (MEMS)
Fibre-optic gyro (FOG)
•• Speed sensor used to prevent false movement readings when the
vehicle is stationary
•• Sensor Management Unit (SMU) with integrated GNSS receiver to
APPLICATION SOFTWARE
control all the sensors
Output data can be visualised and used for different applications using
TeraSolid and Orbit Software’s.
CONTROL UNIT
TerraSolid’s software has been designed for the post-processing
and visualisation of laser, trajectory and image data. Running within
A compact control unit with touch screen allows for simple operation. Bentley Microstation, TerraSolid’s applications provide versatile and
Only one cable connection and power input are needed to operate. capable tools for surveyors, civil engineers, designers and planners.

CAMERA SYSTEM Orbit Mobile Mapping Asset Inventory software allows you to organise
and manage all your mobile mapping content including images
(panoramic or planar), point clouds and trajectories. You can visualise,
An optional camera upgrade is available. Panoramic cameras are inspect, check and measure. The software includes tools for rapid
offered to support StreetMapper IV, each with a six camera input and extraction of asset inventory data to a central database.
capture rate of up to 5 frames per second.

S TA NDA RD S YS T EMS OP T ION A L UP GR A DE S


•• Fixed Position Mount •• FOG IMU (Fibre-optic gyro)
•• Laser Scanner •• DIA+ (GPS & GLONASS with DIA)
•• MEMs IMU •• Optical Odometer
•• Speed Sensor •• Ladybug Panoramic Camera
•• GNSS Antenna •• Second Laser Scanner
•• TERRAcontrol System •• Second GNSS Antenna
•• Rotating Mount Option (Single Scanner)

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