Four T300’s from ComNav Technology have been used as active control GNSS points on the top of Sweden’s tallest building, Karlatornet, during its construction to deliver 3D coordinates to total stations and one was used as a base station. The building is set to be complete this month.
The T300 is a receiver with radio frequency, a baseband chip built in, and a unique quantum-real-time kinematic (RTK) algorithm. It supports full constellation systems including BDS-2, BDS-3, GPS, GLONASS, Galileo, QZSS and NavIC.
The receiver is designed for demanding surveying tasks, features tilt compensation, 4G/Wi-Fi connection, 8-GB internal memory and an easy survey workflow with Android-based Survey Master Software. It is designed to make collecting accurate data easy and fast, whether done by a beginner or experienced professional surveyor, the company said.
Surveyors used ComNav equipment to construct a hospital in Burkina Faso. (Photo: ComNav)
Line of sight to GNSS satellites is sometimes obscured by buildings and trees, which also cause multipath, as does nearby water. These conditions require an RTK receiver with multipath mitigation. Often, surveying must occur on property corners or on uneven ground, where it is hard to place surveying equipment. For these reasons, reliability and accuracy are essential, especially in harsh environments. Ground control points require 1-2mm accuracy and topo surveys 1-2cm accuracy. Surveying for AEC also requires software that processes digital files.
ComNav has focused on GNSS core technology innovation and applications for 10 years. The Quantum III technology includes algorithms to suppress multipath and supports all GNSS constellations, allowing the users to acquire and keep RTK centimeter accuracy even in harsh environments. The built-in tilt IMU will help where the exact location to be surveyed is hard to reach. For example, the T300 Plus and N Series GNSS receivers support a maximum pole tilt of 60° and keep the compensation accuracy within 2.5cm, making the field work more efficient, convenient and reliable.
With the Survey Master software’s stake-out points, users can import DXF or DWG files directly and the software can stake out the point, line and surface in CAD.
In April 2021, the government of Burkina Faso used ComNav GNSS T300Plus to provide ground control points survey for the construction of a hospital.
The land security and topographic surveying were completed within only six days, less than half the time that had been scheduled for those tasks. This greatly expedited the construction of the hospital and helped with the fight against infectious diseases, including COVID-19.
ComNav Technology has released the new-generation data collector R550.
With its new industrial-level design and new hardware platform, the R550 is designed to ensure efficiency and productivity in the field.
The IP67 dust-and-waterproof rating protects the R550 from most harsh environments. Equipping it with 7,000 mA Li-ion battery allows more than 14 hours of continuous operation, while fast-charging technology means it only takes four hours to fully charge the collector via the type-C interface port.
The 5-inch-wide sunlight-readable, high-resolution screen provides a smooth experience for any operation. The integrated autofocusing camera helps enhance job documentation by taking photos on site and sharing job information with colleagues.
Survey Master field software available on the R550 controller ensures efficient surveys in the field, including topographic surveys, stakeouts, coordinate geometry (COGO) and more.
Powered by the Android 8.1 operating system and designed with 4G RAM, 64GB ROM and 4G/BT/Wi-Fi on board, users can run other third-party apps based on their specific requirements.
The R550 data collector now is available through ComNav Technology authorized local distributors or ComNav Technology directly.
