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RIEGL VQ-780i - 8 Pages

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RIEGL VQ-780i
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Catalog excerpts

Waveform Processing Airborne Laser Scanner for Wide Area Mapping and High Productivity. ••online waveform processing as well as smart and full waveform recording ••excellent multiple target detection capability ••excellent suppression of atmospheric clutter ••Multiple-Time-Around (MTA) processing of up to 25 pulses simultaneously in the air ••high laser pulse repetition rate up to 1 MHz ••up to 666,000 measurements/sec on the ground ••parallel scan lines and uniform point distribution ••interface for GNSS time synchronization ••seamless integration and compatibility with other RIEGL ALS systems and software packages The RIEGL VQ-780i is a high performance, rugged, lightweight, and compact airborne mapping sensor. This versatile system is designed for high efficient data acquisition at low, mid, and high altitudes, covering a variety of different airborne laser scanning applications from high density to wide area mapping. High speed rotating mirror design ensures reliability, and uniform point distribution across its entire wide field of view and at all flying altitudes. Based on RIEGL’s proven Waveform-LiDAR technology, the system provides point clouds with highest accuracy, excellent vertical target resolution, calibrated reflecetance readings, and pulse shape deviation for unsurpassed information content on each single measurement. Excellent atmospheric clutter suppression yields clean point clouds with minimum efforts in filtering isolated noise points. The system is complimented with RIEGL‘s advanced acquisition and data processing software suite that utilizes parallel computing (GPU) for fast data processing. The RIEGL VQ-780i is designed to work with the latest Inertial Navigation (IMU) Systems, flight management systems, and camera options. Applications: •• ide Area / High Altitude Mapping W ••High Point Density Mapping •• apping of Complex Urban M Environments ••Glacier & Snowfield Mapping •• City Modeling ••Mapping of Lakesides & River Banks ••Agriculture & Forestry ••Corr

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RIEGL VQ®-780i Dense Scan Pattern and Wide Effective Swath Width The RIEGL VQ-780i scanning mechanism - based on a continuously rotating polygon mirror wheel - delivers straight parallel scan lines resulting in a regular point pattern on the ground. With equal spatial sampling frequency along and across track, object extents are well defined and even small objects may be detected. The instrument is perfectly suited for applications where a superior point pattern on target surfaces is required. The wide field of view and the multiple-time-around measurement capability of the RIEGL VQ-780i make...

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Example: VQ-780i at 150,000 pulses/sec, laser power level 100% Altitude = 14,900 ft AGL, Speed 150 kn Results:    Point Density ~ 0.247 pts/m2 Area Acquisition Rate ~ 1,170 km2/h Example: VQ-780i at 250,000 pulses/sec, laser power level 100% Altitude = 12,100 ft AGL, Speed 140 kn Results:    Point Density ~ 0.54 pts/m2 Area Acquisition Rate ~ 880 km2/h PRR = 350 kHz, laser power level 100% Area Acquisition Rate [kma/h]    Area Acquisition Rate [km2/h]    Area Acquisition Rate [km2/h] Results:    Point Density ~ 1.18 pts/m2 Area Acquisition Rate ~ 570 km2/h Assumptions for calculation of the Area...

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Example: VQ-780i at 500,000 pulses/sec, laser power level 100% Altitude = 5,600 ft AGL, Speed 170 kn PRR = 700 kHz, laser power level 100% 3690    -| 12090 Example: VQ-780i at 700,000 pulses/sec, laser power level 100% Altitude = 3,700 ft AGL, Speed 115 kn Results:    Point Density ~ 1.93 pts/m2 Area Acquisition Rate ~ 500 km2/h Results:    Point Density ~ 6.05 pts/m2 Area Acquisition Rate ~ 220 km2/h Area Acquisition Rate [kmJ/h]    Area Acquisition Rate [km2/h]    Area Acquisition Rate [km2/h] Results:    Point Density ~ 3.18 pts/m2 Area Acquisition Rate ~ 600 km2/h Example: VQ-780i at 1,000,000...

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Example: VQ-780i at 1,000,000 pulses/sec, laser power level 50% Altitude = 2,900 ft AGL, Speed 120 kn Results:    Point Density ~ 10.58 pts/m2 Area Acquisition Rate ~ 181 km2/h PRR = 1000 kHz, laser power level 25% Example: VQ-780i at 1,000,000 pulses/sec, laser power level 25% Altitude = 2,700 ft AGL, Speed 100 kn Example: VQ-780i at 1,000,000 pulses/sec, laser power level 12% Altitude = 1,300 ft AGL, Speed 95 kn The following conditions are assumed for the Operating Flight Altitude AGL • ambiguity resolved by multiple-time-around (MTA) processing • targefsize > laser footprint    • average ambient...

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RIEGL VQ®-780i Main Dimensions Copyright RIEGL Laser Measurement Systems GmbH © 2018– All rights reserved

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Technical Data RIEGL VQ®-780i Laser Product Classification Class 3B Laser Product according to IEC60825-1:2014 The following clause applies for instruments delivered into the United States: Complies with 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated June 24, 2007. The instrument must be used only in combination with the appropriate laser safety box. Range Measurement Performance as a function of laser power setting, PRR, and target reflectivity Laser Power Level Laser Pulse Repetition Rate (PRR) 1) Max. Measuring Range 2) 3) natural targets  ≥ 20 % natural...

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Technical Data RIEGL VQ®-780i (continued) Data Interfaces Configuration Monitoring Data Output Digitized Data Output Synchronization Camera interface General Technical Data Power Supply / Current Consumption Main Dimensions (length x width x height) Weight Protection Class Max. Flight Altitude operating / not operating Temperature Range operation / storage TCP/IP Ethernet (10/100/1000 MBit/s) TCP/IP Ethernet (10/100/1000 MBit/s) High-speed data link to RIEGL Data Recorder DR1560i Serial RS232 interface, TTL input for 1 pps synchronization pulse, accepts different data formats for GNSS-time information...

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