For certain precision agriculture applications such as row crop bed preparation and planting or topographic map generation, submeter DGPS accuracy is not enough. That's where centimeter-level solutions using Real-Time Kinematic (RTK) can give you even greater accuracy, as well as huge savings in time and money. The Trimble AgGPS 214 receiver is an RTK receiver designed and built for agricultural applications.

The GPS receivers used in Trimble RTK systems are dual-frequency receivers. Dual-frequency receivers are a must in high accuracy applications, such as precise guidance along crop rows or collecting GPS elevation data for topography mapping. As well as using the standard code and carrier phase GPS signals like all other GPS receivers, Trimble's dual-frequency receivers also track the second carrier phase signal. It is this signal that enable Trimble RTK receivers to lock into the higher accuracy, and initialize more quickly. Initialization is the process a receiver performs to get the information it needs from the satellites to generate high accuracy positions typically about one minute. Trimble's RTK receivers also output data at rates better than one second. In fact, a data rate of ten times per second is standard in the AgGPS receiver.