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Mobile mapping offers faster, more cost-effective geospatial data facilitation, especially in environments where traditional surveying struggles to deliver. This blog examines the differences between traditional surveying practices and mobile mapping, and the use cases for each in surveying.
Traditionelle Vermessung vs. Mobile Mapping
Was ist traditionelle Vermessung?
Traditional surveying refers to any survey carried out from static locations including total stations, laser levels, and tripod-mounted LiDAR. These technologies have been in use for decades and are well-established in the surveying community.
Was ist Mobile Mapping?
Im Gegensatz zur traditionellen Vermessung, mobile Kartierung is carried out from a moving vehicle. This can be a land-based vehicle such as a car, or an aerial vehicle such as a drone or a light aircraft.
Im Allgemeinen ist LiDAR der beliebteste Sensor für mobile Kartierungsvermessungen. Mobile Kartierungsvermessungen können aber auch mit Radar, Photogrammetrie oder sogar Hyperspektralbildgebung durchgeführt werden.
Vorteile der traditionellen Vermessung
Traditional surveying practices offer the following benefits:
1. Hohe Präzision (auf Kosten der Mobilität)
Traditional surveying methods are conducted using stationary sensors, and gather highly precise data. However, that precision comes at the cost of flexibility – in order to move around a site, the sensors must be physically picked up and moved around.
2. Einfache Bereitstellung
Surveyors may already own traditional surveying equipment and be experienced with the accompanying software, making it a simple choice to deploy. However, the growing demand for geospatial data in challenging locations mean this choice could leave surveyors with gaps in their data.
Vorteile von Mobile Mapping
Mobile mapping primarily offers greater flexibility, to survey in spaces that traditional surveying cannot.
Flexibilität
Mobile mapping payloads capture a site more efficiently than surveying from fixed points. In many mobile LiDAR surveying setups, a 360-degree LiDAR makes the capture even simpler by eliminating the risk of blind spots in your survey data during post processing.
2. Zurückgelegte Strecke
Mobile mapping is suited to surveying large areas such as rail corridors, road networks, and landscapes. Car mounted and aerial surveying allow you to cover distances much larger than traditional surveyors on foot can achieve. Using drones or UAVs can also open up previously inaccessible areas like cliff faces and off-road areas.
3. Sicherheit
Mobile mapping enables surveyors to capture a site remotely by piloting a drone, or to be safely within a car instead of by a roadside, reducing the risk of injury.
4. Geschwindigkeit
Mobile mapping captures large areas faster than traditional surveying methods, reducing survey time and expense.
5. Leistung ohne GNSS
Mobile mapping platforms compensate for poor GNSS signal in areas such as urban canyons, or when completely indoors, ensuring reliable data capture where total stations or fixed LiDAR scanners cannot.
Key differences; traditional surveying vs mobile mapping
Datenerfassunggeschwindigkeit
Traditional survey data gathering, methods are relatively slow compared to mobile mapping, even when using LiDAR. Mobile mapping payloads gather data constantly while moving through the site, while traditional surveying methods involve gathering data at a specific point, moving, resetting, and gathering more data.
Genauigkeit und Präzision
Fixed, traditional surveying tools offer greater precision than mobile mapping setups. Mobile mapping solutions function in areas where traditional surveying cannot, giving mobile mapping setups greater accuracy.
Abdeckung und Skalierbarkeit
Mobile mapping covers far larger areas than traditional surveying, and scales better.
Wie Sie den richtigen Ansatz für Ihr Projekt wählen
If you need extremely high precision, aren’t surveying a very large area, and don’t anticipate any issues with GNSS, choose traditional surveying.
If you need to survey a large area, or an area where GNSS signal is unreliable, and you have a system that provides the required level of accuracy for your use case, then choose mobile mapping.
BeeXact: Eine Fallstudie zur mobilen Kartierung
Infrastrukturkartierungsunternehmen BeeXact einen Vertrag gewonnen, um das gesamte Glasfasernetz Italiens zu kartieren – etwas, das mit herkömmlichen Vermessungstechniken offensichtlich unmöglich wäre. Zur Durchführung des Projekts setzte BeeXact auf mobiles Mapping – speziell auf straßenbasierendes Mapping – und bat OXTS um Unterstützung bei der Konzeption der Vermessungsnutzlast.
Die RT3000 v4 sitzt im Zentrum von BeeXacts Flotte von mehr als 80 Kartierungsfahrzeugen, mit einem speziell entwickelten Datenverarbeitungs-Workflow, der die riesigen Mengen an LiDAR-Daten in nutzbare Erkenntnisse für die Kunden von BeeXact umwandelt.
Mobile Mapping versus traditionelle Vermessung: Wie sieht die Zukunft aus?
Industry commentary indicates that in the future, surveying is likely to become increasingly automated, and focus on providing real-time data. Real-time data facilitates instant decision-making for time-sensitive applications (such as comparing as-built construction plans and accounting for any variances). Automation will allow surveyors to work faster and cover more ground, without compromising the quality of the final output.
Both mobile mapping and traditional surveying necessitate an even greater reliance on navigation-grade positioning technology. Real-time survey data needs to be accurate enough to use with minimal, or no, post-processing, and automated surveying equipment needs localisation for the navigation stack that enables the platform to move autonomously.
OXTS GNSS/INS units are already used in these applications.
- Unser xNAV650, is popular with surveyors thanks to its accuracy levels and ability to be mounted to cars, planes, or even drones.
- Die xRED has been integrated into autonomous mobile robots to provide navigation capabilities.
- Die WayFinder family of products is able to perform real-time computations that would facilitate real-time surveying data.
RT3000 v4-Datenblatt herunterladen
Erfahren Sie mehr über unser Flaggschiff für mobile Kartierung GNSS/INS, das RT3000 v4
