Whitepapers

Comparison of the Trimble MX9 and the Trimble MX50 mobile mapping systems 10 Results and conclusions Despite the same camera CMOS sensors, the MX9 planar cameras can offer better resolution thanks to the optical components. Lenses with longer focal length provide better GSD values. When comparing the same lighting conditions, it is clear that planar cameras can generate sharper images and can capture small details. This capability makes the planar camera useful for applications where visual inspection plays a significant role in the workflow. Small features and feature details can be captured and analyzed (that is, cracks from the back-down planar camera, text or labels on signs or on utility cabinets) from the planar images. The 360° spherical camera images can provide the same level of detail only at short distances from the specific features. Comparing the LiDAR sensors Laser description The MX9 and MX50 systems have different lasers. MX9 and MX50 laser types are Class 1 and are based on Time-of-Flight (ToF) technology. The MX9 laser distance measuring technology is based on Full-Wave-Form technology. This means the returning laser-signal from the object back to the laser scanner is captured with its whole digital-curve ("image of the return signal is captured"). A full waveform analysis is done online and only the resulting information is stored. In this online processing step on the laser scanner, the signal-shape is used to estimate, with advanced processing technology, the exact delta time of the measurement. Later in the office, this technology also enables the ability to detect multiple returns/echoes, which then is multiplied with the light-speed to a discrete distance. This post-processing step in the office also allows to correctly separate multiple laser pulses in the air at the same time. The Trimble X7P profiler used in the MX50 system measures the discrete distance to the object directly in the laser scanner and immediately saves the discrete distance in the raw data (can detect only one returning signal). The following table summarizes the main laser features for each system: MX9 MX50 Laser types ToF - laser class 1 ToF - laser class 1 Returns Practically unlimited 1 Ranges 85 m to 420 m 80 m Laser orientations 3× horizontal (H1 = ~45° / H2 = ~30° / H3 = 0°) 3× vertical (V1 = ~40° / V2 = ~27° / V3 = ~15°) 1× horizontal (H2 = ~30°) 1× vertical (V1 = ~40°) Max measurements per second 300 kHz / 500 kHz 750 kHz / 1000 kHz 166 kHz 500 kHz (effective 480 kHz) Max profiles per second 10 to 250 Hz 120 Hz Main features of each laser

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