GNSS refers to a network of satellites that transmit signals to receivers on Earth. These signals allow the receivers to determine their precise geographic location. The most known GNSS system is the Global Positioning System (GPS). By utilizing GNSS technology, cubic meter calculations can be performed with high accuracy, especially when dealing with large areas or complex geometries.
Preparing a geodetic image for the purpose of legalizing an object using a GNSS (Global Navigation Satellite System) receiver involves several steps. Here's a general outline of the process:
1. Define the object: Determine the specific object or property that needs to be legalized. This could be a building, a land parcel, or any other structure or feature.
2. Research legal requirements: Familiarize yourself with the legal requirements and regulations governing the legalization process in your jurisdiction. This may involve reviewing local laws, regulations, and surveying standards to ensure compliance.
3. Plan the survey: Develop a survey plan that outlines the scope and objectives of the geodetic survey. Identify the GNSS receiver and other equipment needed for the survey and determine the survey methodology based on the specific requirements and accuracy standards set by the authorities.
4. Establish control points: Identify and establish control points on the object or in the surrounding area. Control points are known geographic positions with accurately determined coordinates. These points will serve as reference marks for the survey and aid in establishing accurate positions for the object.
5. GNSS data collection: Using the GNSS receiver, collect data at the control points and other relevant locations on or near the object. Ensure that you follow proper GNSS data collection procedures, such as maintaining an unobstructed view of the sky and allowing sufficient observation time for accurate positioning.
6. Data processing: Process the collected GNSS data using specialized software or post-processing techniques. This involves combining the data from multiple satellite signals and applying correction factors to enhance the accuracy of the positions. The processed data will yield precise coordinates for the control points and the object itself.
7. Documentation and reporting: Prepare a comprehensive report documenting the geodetic survey process, including the survey plan, control point descriptions, data collection details, and data processing methodology. Include the final coordinates of the object and any other relevant information required for the legalization process.
8. Submitting the survey: Submit the geodetic survey report, along with any other required documentation, to the appropriate authorities responsible for legalizing the object. Ensure that you comply with the specific submission procedures and provide all necessary supporting materials.
What the process looked like for us:
- Based on the address and number of the plot, we have established which cadastral municipality the plot belongs to.
- We downloaded an up-to-date geodetic base and established which points would serve as control points.
- Then we went to the field where we recorded the object using NavCom SF-3040 GNSS receiver and measured the fronts using a distomate.
- Upon arrival at the office, we transferred the data from the receiver to the computer, after which we started mapping the recorded data and creating a geodetic image of the object.
- After the image was made, we prepared the other necessary documentation that must be submitted with the image.
- After everything was prepared, we took it to the cadastre and handed it over in order to complete the legalization of the object.
The GNSS receiver used in the field is NavCom SF-3040 Pole-mount GNSS StarFire™ / RTK Extend™ Receiver. It provides both RTK-level accuracy up to 40 km away from the base station or stand-alone DGPS five-centimeter level position accuracy anywhere in the world, any time with StarFire. The SF-3040 supports Ultra RTK™, which allows RTK accuracy (1 cm, +0.5ppm) at up to 40km from the base station. Combined with NavCom’s industry-exclusive RTK Extend™, users can work in challenging environments and maintain RTK- level accuracy even during radio outages for up to 15 minutes.