Overview of Trimble R3 GPS System
The Trimble R3 GPS system is a comprehensive L1 GPS postprocessed solution designed for precise surveying. It integrates an L1 GPS receiver, antenna, rugged handheld controller, and user-friendly software for both field and office use. The system is capable of operating without line-of-sight and in various weather conditions, providing sub-centimeter accuracy.

Unique Design and Durability
The Trimble R3 system combines a survey-grade receiver with the Trimble Recon controller, known for its durability in harsh conditions. The system is compact, lightweight, and can withstand drops, extreme temperatures, and water exposure, eliminating the need for a separate GPS receiver.

Surveying Capabilities
Utilizing Trimble Maxwell technology, the R3 system ensures accurate and reliable results. It supports the establishment of survey networks and data logging, with easy data transfer to PCs for baseline processing. The system's workflow is similar to the advanced Trimble Survey Controller software, ensuring performance and reliability.

Software and Usability
The Trimble R3 runs on the Microsoft Windows Mobile for Pocket PC operating system, allowing for flexibility and ease of use. The Trimble Digital Fieldbook software offers a user-friendly interface, enabling quick learning and efficient operation. Trimble Business Center software in the office facilitates data processing and quality control.

Performance Specifications
The system features 12 channels for L1 C/A Code and L1 Full Cycle Carrier, with WAAS/EGNOS support. It offers high precision in static, FastStatic, and kinematic surveying, with specific accuracy metrics provided for horizontal and vertical measurements.

Hardware Specifications
The Trimble R3 GPS system is designed with a lightweight, fully sealed casing, meeting various environmental standards for shock, vibration, and temperature. It includes multiple communication ports and supports extensive data logging capabilities.

Trimble A3 Antenna
The antenna is designed to minimize signal interference and multipath effects, ensuring accurate measurements. It is robust and suitable for a wide range of operating temperatures.

Accessories
The system comes with standard accessories such as a field case, pouch, and antenna cable, with optional accessories like a range pole bracket and vehicle charger available.