Oxford Technical Solutions Ltd
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Architecture
The xOEM system is made up of two main building blocks, the xOEMcore and the ADK platform. The
ADK consists of the GNSS receivers, System on Module (SoM), interfaces, logging and
communication. The xOEMcore contains the IMU block and main navigation processor. The two
blocks are connected by a high-speed serial cable but are not physically mounted together. Although
they can be mounted independently, most drawings in this manual display the two parts in-line
horizontally. Figure 1 shows the xOEM block diagram.
Figure 1: xOEM block diagram
The xOEMcore houses the 6-axis IMU and the main processor that calculates the navigation solution.
The ADK platform feeds aiding data, configuration files and commands to the xOEMcore; it takes raw
data (RD) and navigation data from the xOEMcore, writes RD files and sends the navigation data out
over serial and Ethernet interfaces.
Model variations
There are two models available in the xOEM series: the xOEM500 and xOEM550. Both systems use
the xOEMcore with the same inertial sensors. The only difference is the GNSS receivers.
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xOEM500: Single frequency (L1), GPS and GLONASS.
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xOEM550: Dual frequency (L1/L2), GPS, GLONASS and BEIDOU.
Note: Triple constellation (GPS+BEIDOU) is not recommended due to processing
constraints. GPS+GLONASS or GPS+BEIDOU options are available.
