ELT RTK Base

ELT_RTKBase is a stationary GNSS base station built on multi-constellation, multi-frequency receivers such as the Unicore UM980, Bynav M20 or Septentrio mosaic-X5. It offers advanced connectivity options over the internet or local networks. The package includes detailed documentation, making it user-friendly even for beginners.

CORS stands for “Continuously Operating Reference Station”. So when we talk about CORS, we mean a stationary GNSS base station with an antenna installed on a roof. When we say GNSS base station without context, we usually refer to a portable surveying GNSS base—a receiver with an antenna.

ELT_RTKBase is a high-performance GNSS base station designed for precise positioning. It features two NTRIP v1 servers that can also function as TCP clients, making it a flexible solution for RTK applications. The device comes with detailed documentation, including step-by-step screenshots, ensuring easy setup even for beginners.

The first step is to decide whether you need advanced (wired) GNSS base station or a budget (wireless) GNSS base station. If you need Ethernet, PoE, or 5GHz WiFi, choose a wired base station. If 2.4GHz WiFi is sufficient, a budget station will do.

Raspberry Pi 4B, supports Ethernet, dual-band WiFi (2.4GHz and 5GHz), and can be powered via USB or PoE, with rack-mounting capability. The budget station, built on Raspberry Pi ZERO 2W, uses only 2.4GHz WiFi, is USB-powered, and doubles as a GNSS receiver with an NTRIP LED and USB output. 

The base stations differ in GNSS receivers. Unicore UM980 is an entry-level survey-grade receiver, offering good signal quality and wide compatibility. Bynav M20 is simpler, less feature-rich, and not survey-grade, suitable for basic tasks like GNSS mining. Septentrio Mosaic X5 provides advanced features like spoofing protection and regional optimization, ideal for professional geodetic work.

Choosing the right GNSS antenna depends on your needs. The ANN-MB2 is an affordable option for basic use. For professional surveying, harsh climates, high accuracy, or multipath suppression, consider alternatives like the Choke Ring, Survey 160 mm, MultiPatch  or Quad Helix.