What is GPS RTK?How does it work?
Real Time Kinematics
RTK is short for real time kinematics. A GPS receiver capable of RTK takes in the normal signals from the Global Navigation Satellite Systems along with a correction stream to achieve 1cm positional accuracy. GNSS includes satellites from GPS (USA), GLONASS (Russia), Beidou (China), and Galileo (Europe). On top of these signals an RTK receiver takes in an RTCM correction stream and then calculates your location with 1cm accuracy in real time. The rate varies between receivers but most will output a solution at least once per second; some receivers can output this higher precision solution up to 20 times a second. RTK capable GPS receivers used to be thousands of dollars and were limited to professional surveyors and government groups.
How much does RTK GPS cost?
Beitian RTK GPS differential L1 + L5 high-precision GNSS built-in compass module BT - M002C M002
Price：49.88-108.88USD ➩. ➪Click Shop now
horizontal accuracy:1CM+1PPM--1.5M CEP
elevation accuracy:1CM+1PPM--1.5M CEP
Beitian UM982 Navigation Surveying Positioning Precision Centimeter-level RTK GNSS module BT-982 980 K1 K2 K3 K4
Price：218.88USD ➩. ➪Click Shop now
horizontal accuracy:1CM+1PPM--1.5M CEP
elevation accuracy:1CM+1PPM--1.5M CEP
CHANNELS:1408
Weight：11-15g
Beitian Network RTK directional GNSS board UM982/980+4G communication solution GPS module BG-550
Price：218.88USD ➩. ➪Click Shop now
Chip：RTK GNSS Module
Receiver type：BDS B1I/B2I/B3I、GPS L1/L2/L5、GLONASS L1/L2、Galileo E1/E5a/E5b、QZSS L1/L2/L5、SBAS
Channel：1408 Channel，Base on NebulasIV
Default position system：BDS B1I/B2I/B3I GPS L1C/A/L2P (Y)/L2C/L5 GLONASS L1/L2Galileo E1/E5a/E5b QZSS L1/L2/L5
Precision:
Single Point (RMS)：Flat：1.5 m Elevation：2.5 m
DGPS (RMS)：Flat：0.4 m Elevation：0.8 m
RTK (RMS)：Flat：0.8 cm + 1 ppm Elevation：1.5 cm + 1 ppm
Beitian 30km long distance 4G communication data transmission radio module RTK UAV GNSS receiver BT-B488
Price：398.88USD ➩. ➪Click Shop now
Beitian centimeter-level RTK differential deformati integrated GNSS receiver BT-B159
Price：998.88USD ➩. ➪Click Shop now
Support:GPS BDS GLONASS GALILEO
BT-B159 is a design for big dipper foundation enhancement system construction and the cost-effective miniaturization GNSS receiver, built-in Linux operating system, fully independent intellectual property rights development, interface type, communication diversity, support large capacity data storage, support the whole system full frequency point double antenna directional solution and double antenna independent difference output function, is the best choice for the beidou foundation enhancement system construction.
Beitian drone UAV RTK GPS BDS GLONASS GALILEO SMA-J GNSS Helical antenna series
Price：18.88-65.88USD ➩. ➪Click Shop now
Support:GPS BDS GLONASS GALILEO
Applicable to:Drone UAV etc.
Beitian High Gain High Precision GNSS Antenna provide stability and reliability GNSS signal for positioning application
Price：10.88-90.08USD ➩. ➪Click Shop now
Model:BT-800D 800S 300S 300D 208 140
Support:GPS BDS GLONASS GALILEO
Beitian NEW 3D choke ring GNSS Antenna, used with satellite navigation receivers, survey, map, agriculture BT-380B
Price：1088.88USD ➩. ➪Click Shop now
Model:BT-380B
Support:GPS BDS GLONASS GALILEO
GPS RTK stands for Real-Time Kinematic positioning, which is a satellite navigation technique used to enhance the precision of position data derived from satellite-based positioning systems like GPS (Global Positioning System). Here’s a breakdown of what GPS RTK entails:
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**Real-Time**: GPS RTK provides real-time positioning information with very high accuracy, typically in the range of centimeters or even millimeters.
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**Kinematic**: RTK uses the principles of kinematics to enhance accuracy by comparing the phase of the carrier signal between the GPS receiver and a reference station. Kinematics here refers to the study of motion, specifically the change in position over time.
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**How it works**: RTK requires at least two GPS receivers: one is stationary at a known location (the base station), and the other is mobile (the rover station). The base station receives signals from GPS satellites and transmits correction data to the rover station in real-time. The rover station uses this correction data to refine its GPS position, significantly improving accuracy.
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**Accuracy**: RTK can achieve centimeter-level accuracy horizontally and vertically, making it suitable for applications where precise positioning is crucial, such as in surveying, construction, agriculture (precision farming), and autonomous vehicles.
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**Applications**: Beyond traditional land surveying, RTK is used in creating precise maps, guiding agricultural machinery, in UAVs (drones) for accurate flight paths, and in various scientific and industrial applications where precise geolocation is essential.
In summary, GPS RTK is a technique that leverages real-time corrections to satellite-based positioning data, enabling highly accurate and precise location information, which is vital for a wide range of applications requiring exact spatial data.
You can build your own GNSS reference station. It takes some work, some hardware.You can contact us to get solutions and equipment list.
Beitian GNSS receiver UM982/980 ZED-F9P 4G communication Beidou GPS high precision RTK module
Price：630.88-720.88USD ➩. ➪Click Shop now
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Can be customized for variety fields and projects.Beitian products are widely used in driving test and training, lawn mower, UAV, precision agriculture, automatic driving, measurement and mapping, deformation monitoring, navigation timing and other fields.