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Aerial survey

  • Categories:Application
  • Time of issue:2020-08-30 00:00:00
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Aerial survey

Sun Hawk(Henan) Aviation Industry Co.,Ltd. is mainly engaged in UAV aerial photography and aerial survey and the sale of UAVs. The company has 4 professional aerial photography teams, and the flight controllers have more than 3 years of flight experience.

powerful complement to traditional aerial photogrammetry, with high flexibility, efficiency and fast speed, fineness and accuracy, low operating cost, wide application range and short production cycle.

Aerial survey is also known as photogrammetry and remote sensing. UAV aerial survey is currently used for terrain survey, land supervision and management, urban and rural planning, disaster investigation, land right confirmation, power line walking, cartography.

Aerial survey is the remote sensing science which is a part of surveying and mapping science, with the applications of space science, electronic science, earth science, computer science and other sciences, where non-contact sensors are used to obtain the spatio-temporal information about the target. It can not only provide solutions for the geometric positioning of traditional targets; more importantly, it can make use of outer space sensors to obtain images and non-image information for semantic and non-semantic interpretation, so as to extract the information on the geometry and physical characteristics of target objects in the objective world, providing us with more scientific techniques and methods for understanding and transforming nature. It is mainly used in surveying and mapping, urban construction planning, traffic planning, pipeline planning, land planning, agriculture, forestry, water conservancy, meteorology, resource environment, disaster prevention and mitigation. The advanced UAVs adopted by the company are featured by superior performances, accurate image acquisition, large operating areas, high efficiency and flexibility, which can meet the CH/Z3003-2010 1: 500, 1: 1000, 1: 2000 large scale mapping accuracy requirements of the "specifications for office operation of low-altitude digital aerophotogrammetry" and the GB 7930-1987 and GB/T7930-2008 in the 1: 1000 and 1: 2000 large scale mapping accuracy requirements of the traditional aerial survey specifications.

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Case

Overview of Project's Survey Area:

  Suiping County is in the south of Henan Province, located at latitude 32 ° 59 '~ 33 ° 18', longitude 113 ° 37 '~ 114 ° 10', adjacent to Shangcai and Runan in the east, sharing border with Xiping in the north, Wugang and Biyang in the west, Yicheng District and Queshan County in the south (survey range)

航拍航测

Flight program design:

  The project has a measuring area of about 30km², whose terrain is mainly plains, with an average elevation of about 210m (highest of about 230m, and lowest of about 200m). According to the operational requirements of Party A, the flight program design for the project consists of a ground resolution of 10cm, a relative flight height of 560m, longitudinal overlap of 70%, lateral overlap of 70%, and a total of 3 sorties. The mission adopts a large-scale flight overlap program, for the purpose of obtaining higher DLG and road earthwork calculation accuracy in the subsequent process. The average flight height of the survey area is about 560m. Based on the highest and the lowest elevations in the survey area, the GSD of the image obtained is 8cm ~ 10cm, meeting the need of Party A’s project.

Technical Standards Implemented:

  (1) GB/T18314 ~ 2009 "Specifications for global positioning system (GPS) surveys”

  (2) CJJ73-97 "Technical specification for urban surveying using global positioning system (GPS)”

  (3) CJJ8-99 "Code for urban survey”

  (4) GB/T20257.1-2007 "Specifications for cartographic symbols 1: 500, 1: 1000, 1: 2000 topographic maps” ("topographic maps")

  (5) GB/T18316-2008 "Specifications for inspection and acceptance of quality of digital surveying and mapping achievement"

"Sky Eye" mission module is designed to be able to carry standard cameras, tilted cameras and image transmission equipment:

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"Sky Eye" UAV Specifications:
Body size: 2250*650*3500mm Cruising speed: 120km/h
Body size: 21kg Stalling speed: 18m/s
Maximum takeoff weight: 32kg Engine power: 7 hp / 12 hp (optional)
Maximum speed: 160km/h Taking off and landing mode: Vertical takeoff and landing
Control radius: 30km Endurance: 3-4h
Flying height: 100-4500m    
Camera parameters:
  Sun Hawk "Sky Eye" industrial UAVs are used for aerial photography. The specific camera parameters are as follows:
Aerial photography time 2017.02.15 Shutter speed 1/1250s
Aerial photography camera Canon5DS Aperture size 2.8~4
Pixel size 4.1µm ISO 500
Lens focal length 35mm Flight mileage 310km²
Relative flight height 560m Flight time 240min
Ground resolution 0.1m Photographing 5352Sheet

Route planning:

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"Sky Eye" UAV field operations:

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"Sky Eye" UAV data sheet preview:

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3D camera calibration

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Office operation work flow:

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High-precision post-production data aerial triangulation:

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Aerial aerial preview:

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