Comnav's new Venus Laser RTK - innovation makes a difference

ComNav Technology is a leading global manufacturer of GNSS technology with creativity and innovation at its core. They started making their GNSS Receivers by designing and producing chip sets and OEM modules. ComNav's GNSS technology innovations make your work easier, safer and more efficient.

Since Beidou Global and Galileo are available in the global GNSS Constellations network, GNSS receivers can track more than 35 satellites from most places worldwide. At the same time, triple frequencies are now a standard for each constellation. These improvements make GNSS surveys much faster and more accurate.

However, measuring the offset points (points that cannot be surveyed with the pole tip) remains a hassle. Attempts have been made using a camera, photogrammetry, laser, and compass. Still, direct measurements of these points are much easier and more accurate.

ComNav solved this problem by introducing the new Venus Laser IMU RTK. ComNav combined laser, IMU and GNSS technology into a handy housing. It is a game changer for surveyors and other professionals interested in taking 3D positions everywhere. After years of product development, the first Venus RTK is available!

The advantages of the Venus Laser RTK

As a surveyor, it’s often challenging to survey in obstructed areas. Imagine surveying in a trench or sewage pit, on top of buildings or earthworks, beside fences or walls or water, etc. Field measurements and stakeouts in dangerous areas are inevitable in the surveyor’s job. These include hidden points, utility piping across a river, manhole covers on the road and slopes, railway tracks, polluted areas etc. In all these scenarios, the Venus Laser RTK  offers a unique solution.

Image 1: Surveying with ComNav Venus Laser RTK in obstructed areas

The Venus laser RTK has a millimetre-level distance meter on its bottom. It sends a laser pulse towards an object and measures the time the pulse takes to be reflected off the object and returned to the emitter to determine precisely the distance between the receiver and the object.

The laser module embedded into the Venus receiver can dynamically detect light intensity, adjust signal amplification factor, and optimize signal-to-noise ratio, ensuring high-quality and high-frequency data output under various lighting conditions.

Image 2: Comnav Technology IMU technology

The Venus laser RTK comes with SinoGNSS 3rd generation IMU for tilt compensation. Also, we consider the line connecting the GNSS antenna phase center and the laser point as a vector (vector L), in the local coordinate system (n-system). If we align the Z-axis of the accelerometer of the inertial device (IMU) parallel to vector L, and set the carrier coordinate system (b-system) parallel to the sensitive axis of the 3-axis accelerometer, with the origin at the intersection of the sensitive axis, a right-handed coordinate system is formed.

As a result, vector L in the b-system remains constant regardless of how the module moves with the receiver. Using this deterministic relationship and a GNSS/INS integrated navigation system, we can calculate heading and tilt angle in real-time.

Due to the laser, distance measurements are no longer restricted by a bulky pole.

Image 3: Roll, pitch and heading calculations

The Venus Laser RTK is easy to use, just take it out of your pocket and start using it right away with your GNSS RTK network. Use the laser to shoot at the points you need to survey.

The compact design of this product looks like a mug, and its 380g weight makes it convenient to take around.

As for accuracy, in the pole mode, it has tilt compensation up to 60 degrees with an accuracy of 2.5 cm; in laser mode, it achieves an accuracy of 5.5 cm in handled mode. Anyone can access precise 3D coordinates with Venus anywher safely.

In this case, the term "safely" refers to more than just increasing the user's safety, especially in dangerous situations, but also increasing the safety of the laser itself. The laser used by Venus is a 3R Class laser and is considered safe to be used when handled properly.

Image 4: The new Venus Laser RTK

When "GNSS + INS" RTK becomes standard, Comnav Technology solves the offset points issue with direct measurements. A rodless GNSS receiver is undeniably an impressive new measurement technology.

And because of its extensive application scenarios, the Venus Laser has been made for everyone: surveyors, GIS operators, city planners, architects, engineers, construction managers, gardeners, students at school, police for surveying crash scenes, road managers ...

Please contact us at [email protected] if you would like more information about Venus Laser RTK.

About ComNav Technology

ComNav Technology is dedicated to being an innovator and leader in high-precision GNSS technologies and applications. Until the end of 2022, ComNav Technology has sold its products and solutions to more than 120 countries with a total quantity of more than 500,000 units of modules in over 10 different industries, including land survey, machine control, UAV, UGV, deformation monitoring, personnel positioning, precision agriculture, marine.