{'fraction_non_alphanumeric': 0.025500910746812388, 'fraction_numerical': 0.01639344262295082, 'mean_word_length': 5.179775280898877, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Geodetic investigation of accuracy and reliability of INS/GNSS system iTraceRT-F200-E for navigation in tunnels

The iTraceRT-F200-E (made by iMAR Navigation GmbH) is a modern INS/GNSS device for terrestrial and airborne navigation. We investigate the internal and external accuracies when crossing tunnels by car. We use both the real time solution provided by the internal computer as well as postprocessing solutions computed by Novatel's Waypoint Inertial Explorer 8.10. The accuracy specifications of the manufacturer were not always confirmed.