Data Processing

Centimetre-level Accuracy of Positioning Data

Obtain accurate positioning data without the need for real-time communication with a reference station or base station, which can be particularly beneficial in remote or inaccessible areas.

Data Processing

PPK (Post-Processed Kinematic) data processing is a technique used to improve the accuracy of GNSS (Global Navigation Satellite System) data collected by surveying equipment, such as drones or other mobile mapping devices.

It involves post-processing the GNSS data collected in the field with a base station’s GNSS data.

ADVANTAGES OF PPK OVER OTHER PROCESSING METHODS

PPK processing offers significant advantages over RTK (Real-Time Kinematic) or other methods of processing, providing greater accuracy, flexibility, and cost savings for surveying and mapping applications.

Greater Accuracy

PPK processing allows for greater accuracy in GNSS data than other processing methods. This is because it can account for errors caused by atmospheric conditions and signal noise, which can cause inaccuracies in real-time GNSS data.

Flexibility

PPK processing can be used to process data after it has been collected, providing greater flexibility in the collection and processing of data. It is also not limited by the range of a real-time correction signal, allowing for greater flexibility in surveying locations.

Reduced Equipment Costs

PPK processing requires only a single receiver, while other methods may require two or more receivers, which can increase equipment costs. Additionally, PPK processing does not require real-time communication between the receiver and the base station, reducing the need for expensive communication equipment.

Improved Workflow

PPK processing can save time in the field by allowing data to be collected quickly and then processed later, which can help to improve workflow and increase efficiency.

Increased Productivity

The accuracy and flexibility of PPK processing can help to increase productivity by reducing the need for repeated data collection or manual data processing.

Sample GIS Data

high-resolution images and videos

Using state-of-the-art cameras to capture bird’s-eye view images.

3d Models and maps

Using LiDAR sensors and photogrammetry techniques to create detailed 3D models and maps.

Thermal imaging

Using thermal cameras that can detect temperature variations and identify potential issues, such as leaks or hot spots.

Spectral imaging

Using multispectral and hyperspectral cameras to capture data in different wavelength bands, which can be used to identify specific materials or detect changes in the environment.

AS FEATURED ON

FAQ

What is the difference between PPK and RTK?

PPK and RTK are both methods for achieving high-accuracy positioning using GNSS data. The main difference is that RTK uses real-time communication with a reference station to provide corrections to the GNSS data, while PPK processes the data offline using reference data collected separately from the GNSS data.

How accurate is PPK?

PPK can provide centimetre-level accuracy, which is much higher than what can be achieved with standard GNSS positioning methods. AECA has successfully achieved approximately 3cm accuracy consistently.

How long does it take to process PPK data?

The time required to process PPK data depends on the amount of data collected and the processing power of the computer being used. In general, PPK processing can take anywhere from a few minutes to several hours.

What are some common applications of PPK?

PPK is commonly used in applications where high-accuracy positioning is critical, such as surveying, mapping, and precision agriculture. It can also be used in other applications requiring accurate positioning data, such as construction, mining, and environmental monitoring.

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