Precision is not something to maximise. Higher precision usually means higher power consumption, a stronger dependency on the correction link and a higher cost, so it has to be matched to the job. Start by putting the accuracy the result actually needs next to the battery life you can accept, then decide the terminal configuration, the power supply and the reporting rate.
Precision is a means, not the objective. What a job actually needs is the accuracy of the delivered result — the accuracy level the data handed over has to reach. Once that is fixed, you can judge how high the positioning accuracy has to be, whether a centimetre-level fixed solution is needed and how long a convergence time is acceptable, and only then decide which terminal tier to use.
Raising precision raises the cost of several things at the same time: a module with more channels and more frequency bands, a stricter antenna and RF chain, a permanently online differential correction link, and more computing power and longer run time on the terminal side. All of that turns into a higher purchase cost and a higher power draw. The selection logic is therefore usually: satisfy the required accuracy first, then subtract on the power supply and consumption side, rather than the other way round.
Running high precision across every scenario pushes cost and power consumption up together. A centimetre-level fixed solution has to receive differential corrections continuously and keep tracking multiple constellations, so the module, the RF chain and the communication link stay under heavy load for long periods, and both the purchase cost and the power draw rise.
Frequent reporting and continuous differential correction drain the battery. The higher the update rate and the more frequent the reporting, the higher the duty cycle of the RF and 4G links, and endurance shortens noticeably on the same battery capacity.
Running at high load for a long time affects stability. Continuous heavy load raises the temperature of the unit, and long outdoor shifts can bring risks such as throttling or positioning status fluctuation, which ends up affecting the quality of the result.
UM980 + 4G + Bluetooth; 1408 channels (NebulasIV); supply range 5-30V.
Satellite bands: BeiDou B1I/B2I/B3I/B1C/B2a/B2b, GPS L1/L2/L5, GLONASS L1/L2, Galileo E1/E5a/E5b/E6, QZSS L1/L2/L5/L6.
RTK accuracy (RMS): horizontal 0.8cm+1ppm, vertical 1.5cm+1ppm; cold start <20s.
All-constellation centimetre-level RTK; NTRIP CORS differential correction supported, fixed solution convergence <10s.
BeiDou-3 + GPS + GLONASS + Galileo + QZSS + SBAS; update rate 1-20Hz (10Hz default).
4G global + Bluetooth 5.1; ISP HD display + voice broadcast.
IP67, 2m drop resistance, 4000mAh, RTK endurance ≥20h, USB-C 5V/2A.
Three versions: single-BeiDou / dual-frequency / Pro. Channels 128 / 128 / 1408 (the Pro version uses the same module as the H13, NebulasIV).
RTK accuracy: horizontal 1cm+1ppm / 1cm+1ppm / 0.8cm+1ppm; vertical 2cm+1ppm / 2cm+1ppm / 1.5cm+1ppm. Update rate 1-10Hz / 1-10Hz / 1-20Hz.
The Pro version supports more BeiDou / GPS / GLONASS / Galileo / QZSS / NavIC / SBAS bands.
4G global CAT1 + NTRIP + MQTT + dual Bluetooth; OLED display, IP67.
USB-C, 5V/2A adapter; configured with GboxTools.
Current product models (checked 20260929): handheld H13 (all-constellation, multi-frequency professional RTK handheld terminal, Pro tier only) / H11 (single-BeiDou, dual-frequency and Pro versions; overseas H11 ProEU for Europe and H11 ProEN for North America; brand name “BeiDou Xingtan”); module MG20 (RTK customizable PCBA); antennas SK6640 / SK6608. The H11 Pro and H13 share the same module (1408 channels, NebulasIV).
If the result only has to be metre-level to sub-metre, there is no need to pay the differential and power cost of a centimetre-level fixed solution all year round; if centimetre level really is required, choose the model by the convergence time you can accept, and set reporting to the lowest rate that satisfies the result.
Battery capacity, charging method and backup power. Size the battery and the charging method against the length of a shift, the charging opportunities and the work cycle, and add a backup battery or vehicle power if needed, so that precision does not cost you a full day of working capacity.
High precision on demand, low consumption the rest of the time. Enable high precision and differential correction during the working period, and lower the reporting rate or enter standby outside it; balance the two with the operating mode rather than by stacking configuration.
Need to confirm how to balance accuracy, power supply and reporting rate for a specific working scenario? Contact YUEETEK.