Whitepapers

White Paper - Comparison of the Trimble MX9 and MX50

Issue link: https://geospatial.trimble.com/en/resources/i/1470951

Contents of this Issue

Navigation

Page 12 of 16

Comparison of the Trimble MX9 and the Trimble MX50 mobile mapping systems 12 Laser range, scan repetition rate, and pulse repetition rate MX50 lasers can reach up to 80 m*. MX9 lasers have a longer range, extending measurements up to 120 m* or more. * Depending on the object reflectivity, incidence angle, and other parameters. MX9 MX50 Range and laser rotation speed dictating laser data resolution. MX9 on left, MX50 on right For both systems, the Pulse Repetition Rate (PRR) parameter can be configured for the TMI capturing profiles. As described in the main laser features table on page 12, the MX9 system offers four different measurements per seconds' settings, starting from a minimum of 300,000 points per seconds to a maximum of 1,000,000 points per second, per laser. The MX50 system offers two measurements per seconds' settings, enabling measurements capturing 166,000 points per second or 500,000 points per second per laser. The most evident impact of higher pulse repetition rate of the MX9 system is the slightly shorter point separation of points in the same scan profiles (when equal scan rotations speed applies), this is more evident at longer ranges. When the MX9 and MX50 lasers are scanning at their respective highest PRR (Pulse Repetition Rate) and SRR (Scan Repetition Rate), point separation on scan profiles does not differ that much. This is a consequence of the lower max rotation speed provided by the MX50 system, which is "compensating" for the higher points per second frequency of the MX9 system. Points distribution along the scan lines MX50 lasers can rotate at a maximum frequency of 120 Hz. The MX9 system can spin its lasers up to 250 Hz. The combination between driving speed, PRR and SRR define the chance that the lasers have to hit a specific feature. A simplistic interpretation could be stating that PRR is responsible for points density and SRR for the scanline distribution in an area.

Articles in this issue

view archives of Whitepapers - White Paper - Comparison of the Trimble MX9 and MX50