English 
Terra Drone Co., Ltd. has signed a business agreement for sales cooperation with BizStation Co., Ltd., which develops the GNSS surveying equipment brand “Drogger” and other products. Based on this agreement, from June 16, 2025, we will start selling a set of Terra Drone’s high-precision handheld SLAM “Terra SLAM RTK” and BizStation’s GNSS surveying instrument “RZX.D”. By using “RZX.D” as a local reference station, the absolute accuracy of the point cloud data that can be obtained with “Terra SLAM RTK” will improve from within 5 cm when using network RTK to within 3 cm, enabling more accurate measurements.
Terra Drone’s “Terra SLAM RTK” is a lightweight and compact handheld SLAM that can easily obtain highly accurate 3D point cloud data with a relative accuracy of within 1 cm. It is used in a variety of locations, both indoors and outdoors, for creating floor plans and for use in ICT.
“Terra SLAM RTK” previously used network-based RTK to correct satellite positioning information such as GNSS, achieving absolute accuracy of within 5 cm. While network-based RTK is convenient because it does not require the installation of a GNSS surveying device on-site, depending on the communication environment, the reception of GNSS correction data can become unstable and correction errors due to distance can occur.
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Taking this background into consideration, Terra Drone has begun selling a set of the Drogger brand GNSS surveying device “RZX.D” and “Terra SLAM RTK” developed by BizStation.
RZX.Dは、単体でNtripサーバーとして動作するだけでなく、次のような中継サーバーDrogger Ntrip Casterを使用することもできます。 ビズステーション を使用して、Terra SLAM RTK専用のタブレットで基準局を作成することができます。これにより、ネットワークRTKを使用せずにGNSS補正を行うことができます。さらに、RZX.Dは3つの周波数に対応し、国土地理院の第1種GNSS測量機器に登録されるほど高い測位精度と信頼性を持っています。
RZX.Dをローカル基準局として現地に設置することで、通信環境に左右されない安定した計測が可能となり、距離による補正誤差を低減することができます。RZX.Dをローカル基準局として使用し、Terra SLAM RTKで計測した場合、取得した点群データの絶対精度が3cm以内に向上することが確認されています。
By using “テラ SLAM RTK” in conjunction with “RZX.D,” it is possible to obtain highly accurate point cloud data with a relative accuracy of within 1 cm and an absolute accuracy of within 3 cm, making it possible to handle site conditions that require even stricter as-built management and structural inspection, among other things.
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