Uav aerial survey quality accuracy detection includes

The quality accuracy detection of UAV aerial survey includes: checking whether the registration accuracy and accuracy limit between aerial data and map reference data meet the requirements. Ground control points and differential GPS can be used to check the accuracy and quality.

The quality inspection and acceptance of UAV aerial photography results also includes the following aspects:

1. Shooting quality inspection: Check the shooting quality of aerial photos or videos taken by drones, including picture clarity, light and color reproduction. You can check it by looking at the original picture or taking a prototype.

2. Data integrity check: check whether the aerial data is complete, including whether the data file is complete and whether the data format is correct. You can check the integrity of data by looking at the number of data files, file size and metadata.

3. Quality inspection of feature extraction: For the feature extraction of UAV aerial photography, check whether it is accurate, comprehensive and clear in color. Including the extraction of buildings, roads, rivers, peaks and other geographical elements.

4. Data acceptance * * *: Check whether the data products are delivered in the agreed form. Including the acceptance of data format, data quality report, achievement document, etc.

Aerial survey characteristics of UAV

1, quick aerial survey response capability

UAV aerial survey usually flies at low altitude, which is convenient for airspace application and is less affected by climatic conditions. The requirements for the landing site are relatively small, and landing can be achieved through a relatively flat road surface. The flight safety of pilots is not considered when obtaining aerial images, and the requirements for geographical airspace and meteorological conditions are low when obtaining data, which can solve the regional monitoring function that cannot be realized by manual detection.

2. Excellent timeliness and cost performance.

Traditional high-resolution satellite remote sensing data will generally face two problems. First, the timeliness of archived data is poor; The second is that programming shooting can get the latest images, but it usually takes a long time and has relatively low timeliness. UAV aerial photography can solve this problem well, and the working group can start at any time and shoot at any time.

3. The monitoring area is limited.

China has a vast territory, complex terrain and climate, and many areas are affected by snow and ice all the year round, which leads to certain restrictions on the collection of satellite remote sensing data. There are regulations and restrictions in traditional countries where large aircraft fly. For example, the flying height is more than 5000m, which inevitably has the influence of clouds and hinders the quality of surveying and mapping.

4. Fast acquisition and modeling ability of surface data.

Digital cameras, digital color aerial cameras and other equipment carried by the system can quickly obtain the surface information, obtain ultra-high resolution digital images and high-precision positioning data, and generate 3D visualization data such as 2D and DEM, 3D orthophoto map, 3D landscape model and 3D surface model, which is convenient for the development and application of application systems in various environments.