Frequently Asked Questions

RTK (Real-Time Kinematic) gives you centimeter-level positioning instantly in the field by receiving live correction data, ideal for stakeout and fast-turnaround projects. PPK (Post-Processed Kinematic) records raw satellite data during the survey and corrects it afterward on a computer, useful when a live connection isn't reliable, such as under dense canopy or in remote areas. Static surveying involves leaving a receiver stationary at a point for an extended period to achieve very high precision, typically used for control points and geodetic work. Most modern GNSS receivers, including the SinoGNSS range, support all three modes.

Battery life varies by model and usage mode. Most professional GNSS receivers, such as the SinoGNSS T30 or Mars series, provide 8 to 12 hours of continuous RTK rover operation on a single charge, with base station mode typically lasting longer since it draws less power. Cold weather, screen brightness (on integrated-display models), and frequent Bluetooth data transfer can reduce runtime. Carrying a spare battery is recommended for full-day fieldwork.

A GNSS receiver failing to reach FIX status is usually caused by one of a few common issues: poor satellite visibility (tall buildings, dense tree canopy, or being indoors), a weak or lost correction signal (NTRIP/radio link interrupted), incorrect mount point or coordinate system settings, or outdated firmware. Start by checking your satellite count and signal strength in the controller software, then confirm your correction source is connected and receiving data. If the issue persists, a firmware update or recalibration usually resolves it.

A reflectorless total station can measure distances directly off a surface, such as a wall or the ground, without needing a prism placed at the target point, which speeds up work in hard-to-reach or hazardous areas. A prism-based measurement requires a reflective prism at the target and generally offers longer range and higher accuracy at distance. Most modern total stations, including the Leica FlexLine and FOIF RTS series, support both modes, letting you switch depending on the task.

A single rover connects to an existing correction network (like a CORS network or NTRIP service) for real-time positioning, which is simpler to set up and ideal if reliable network coverage exists in your project area. A base-and-rover setup uses your own base station to broadcast corrections to one or more rovers, which is better suited to remote areas without network coverage or projects requiring a fixed, independent reference point. If you're often working in areas without stable internet or CORS access, base-and-rover gives you more flexibility.

OTIC Geosystems operates a growing network of 34 CORS stations, delivering real-time RTK correction coverage with centimeter-level positioning accuracy across major regions. Connecting your rover directly via NTRIP eliminates the need to set up local base stations on field sites. For coverage inquiries or assistance, call either +971 56 859 7708 or +971 52 622 8783 or email oticgs@gmail.com.

Mapping drones like the DJI Mavic 3 Enterprise typically support RGB cameras for standard photogrammetry, while more advanced platforms such as the DJI Matrice series support interchangeable payloads including multispectral cameras, LiDAR sensors, and thermal cameras. Agricultural spraying drones, such as the DJI Agras series, carry tank-and-nozzle payloads sized by liter capacity for pesticide, fertilizer, or herbicide application. Browse our payload catalog at oticgs.com/shop, or call either +971 56 859 7708 or +971 52 622 8783 for guidance on the right payload for your project.

With RTK or PPK-enabled drones and properly placed ground control points, drone mapping can achieve horizontal and vertical accuracy in the range of 1 to 3 centimeters, comparable to many ground-based survey methods for large-area mapping. Accuracy depends on flight altitude, camera resolution, overlap settings, and GCP placement. For point-specific legal boundary surveys, ground-based GNSS or total station methods are still typically preferred for their direct point accuracy.

IMU (Inertial Measurement Unit) tilt compensation allows a GNSS receiver to maintain accurate positioning even when the survey pole isn't held perfectly vertical, using internal sensors to calculate and correct for the tilt angle. This is useful for working around obstacles, uneven terrain, or when speed matters more than perfect pole leveling. Most modern receivers support tilt compensation up to a certain angle, typically 30 to 60 degrees, beyond which accuracy may degrade.

As a general guide, total stations and levels should be calibrated at least once a year under normal use, with more frequent calibration recommended for equipment used daily or transported often. GNSS receivers benefit from periodic firmware updates and antenna checks. OTIC Geosystems provides full calibration services, contact our workshop via either +971 56 859 7708 or +971 52 622 8783 or oticgs@gmail.com to arrange shipping or discuss the best option for your location.

Single-frequency (L1) receivers offer basic, meter-level accuracy suitable for general GIS data collection. Dual-frequency (L1/L2) receivers can resolve ambiguities faster and maintain centimeter-level RTK accuracy, making them the standard choice for professional surveying. Triple-frequency receivers add a third signal band, improving initialization speed and reliability in challenging conditions such as dense urban areas or under partial canopy. For most professional survey work, dual or triple-frequency receivers are recommended over single-frequency units.

For international customers, OTIC Geosystems accepts payment via international bank transfer (wire transfer) and other agreed payment methods in USD. Contact us at oticgs@gmail.com or call either +971 56 859 7708 or +971 52 622 8783 to arrange payment details and confirm current USD pricing for your order.

International delivery timelines depend on your destination country, the shipping method selected, and customs processing in your country. We'll provide an estimated delivery window when you place your order. For urgent project timelines, mention this when contacting oticgs@gmail.com or calling either +971 56 859 7708 or +971 52 622 8783 so we can advise on the fastest shipping option available.

OTIC Geosystems is an authorized SinoGNSS dealer and ships genuine SinoGNSS GNSS receivers, including the T20, T30, Mars, Jupiter, N2, and N5, to customers internationally. Every unit ships with a traceable manufacturer serial number, full factory warranty, and technical documentation. To place an order or confirm current USD pricing and shipping to your country, email oticgs@gmail.com or call either +971 56 859 7708 or +971 52 622 8783.

Yes. OTIC Geosystems provides after-sales technical support to international customers by phone and email, including troubleshooting, firmware guidance, and diagnostics. For calibration and physical repair work, equipment can be shipped to our workshop, or we can advise on the best option if that's impractical for your location. Reach our support team at oticgs@gmail.com or call either +971 56 859 7708 or +971 52 622 8783.

OTIC Geosystems offers a complete ecosystem under one roof: genuine, manufacturer-certified equipment (GNSS receivers, total stations, drones, levels) with full traceability and warranty, a growing CORS network delivering real-time RTK corrections, professional training, after-sales calibration and repair, and flexible rental options. With African roots and a global footprint, we support customers worldwide, not just locally. For a consultation, email oticgs@gmail.com or call either +971 56 859 7708 or +971 52 622 8783.

Our CORS Coverage vary by region, if you'd like to discuss availability and pricing for your specific project needs, email oticgs@gmail.com or call either +971 56 859 7708 or +971 52 622 8783.

OTIC Geosystems' CORS network uses the standard NTRIP protocol, making it compatible with most modern GNSS receivers, including SinoGNSS, Leica, ComNav, FOIF, and other major brands, as long as the receiver supports network RTK/NTRIP connections. If you're unsure whether your current receiver is compatible, email oticgs@gmail.com or call either +971 56 859 7708 or +971 52 622 8783 with your device model.

OTIC Geosystems' CORS network currently operates 34 stations, and we're actively expanding coverage. If you'd like us to consider adding a reference station in your area, you can submit a request at oticgs.com/corsnetwork, or reach out directly via oticgs@gmail.com or either +971 56 859 7708 or +971 52 622 8783 to discuss your project's needs.