RT2500

Higher Accuracy Unit: RT3200 Dual-Antenna Unit: RT2502 Lower Cost Unit: N/A

RT2500 Inertial and GPS Navigation System is an advanced six-axis inertial navigation system that incorporates an UrbanTrack GPS receiver.

The RT2500 products show our commitment to bring customer value to users where a balance between price and performance is necessary or precision position accuracy is not a focus, but the coupling of INS and GPS systems is still desirable.

The RT2500 Inertial and GPS Navigation System includes three angular rate sensors (gyros), three servo-grade accelerometers, the GPS receiver and all the required processing in one very compact box. The RT2500 products works as stand-alone, autonomous unit and requires no user input before it starts operating.

The outputs from the RT2500 Inertial and GPS Navigation System are derived from the measurements of the accelerometers and gyros. Using the inertial sensors for the main outputs gives the RT2500 system a fast update rate and a wide bandwidth. The RT2500 is available with an update rate of 100Hz or 250Hz for the RT2500-250 model. All the outputs are computed in real-time with a very low latency.

The RT2500 Inertial and GPS Navigation System outputs the real-time measurements over RS232, Ethernet and CANbus. Optional outputs can be made over Analogue.

The Analogue option, the RT-ANA, includes 16 individually configurable channels of 16-bit resolution. Galvanic isolation on the analogue outputs ensures there are no ground loops.

The CAN bus output can be combined into a vehicle’s CAN bus or captured using any CAN data acquisition system. The real-time nature allows the RT2500 to be used for hardware in the loop and controller development. Connection to powerful tools like dSPACE is easy. CAN DBC files are provided.

The precision ADC in the RT2500 gives more than 20 bits of resolution. The resolution of the acceleration measurements is 0.12mm/s² (12uG). The ADC oversamples the analogue sensors and uses coning/sculling motion compensation algorithms to avoid aliasing of the signals.

The internal processing includes the strapdown algorithms (using a WGS-84 earth model), Kalman filtering and in-flight alignment algorithms. The internal Pentium-class processor runs QNX real-time operating system to ensure that the outputs are always delivered on time.

The Kalman filter monitors the performance of the system and updates the measurements using GPS. By using the measurements from GPS, the RT2500 is able to maintain highly accurate measurements and correct inertial sensor errors.

The RT2500 Inertial and GPS System comes with acquisition software that collects the data on a PC or on Pocket PC devices. The software can be used to save tests in files, display real-time results and monitor the performance.

The internal logging enables the RT2500 range of products to work stand-alone. Post-mission, data can be output in ASCII text format and loaded in to the software of your choice.

Simple configuration software allows the user to change the mounting angle; displace the measurement point to a virtual location; change the differential GPS options and many more.

To obtain the best position accuracy, the RT2500 systems are able to use SBAS corrections such as WAAS and EGNOS.

The RT2500 products are ideal for applications that do not require precise positioning but need good velocity, orientation and inertial measurements.

For further information please contact Oxford Technical Solutions or your nearest local agent.

	Overview Get and overview of the RT2000 family.			Operation Operation of the RT2000 is very easy. Learn why.
	Technologies Learn more about the technologies used in the RT2000.			Output Formats Learn more about the output formats of the RT2000.
	Measurements Learn more about the measurements made by the RT2000.			Connectivity Learn more about how to connect your RT2000 to your current system.