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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.
Traditional Surveying vs Mobile Mapping
전통 측량이란 무엇인가요?
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.
모바일 매핑이란 무엇인가요?
전통적인 측량과는 대조적으로, 모바일 매핑 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.
일반적으로 모바일 매핑 조사에 가장 널리 사용되는 센서는 LiDAR입니다. 하지만 레이더, 사진측량 또는 하이퍼스펙트럴 이미징을 사용해서도 모바일 매핑 조사를 수행할 수 있습니다.
전통 측량의 장점
Traditional surveying practices offer the following benefits:
1. 높은 정밀도 (기동성은 떨어짐)
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. 배포 용이성
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.
모바일 매핑의 이점
Mobile mapping primarily offers greater flexibility, to survey in spaces that traditional surveying cannot.
유연성
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. 이동 거리
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. 안전
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. 속도
Mobile mapping captures large areas faster than traditional surveying methods, reducing survey time and expense.
5. GNSS 없이 성능
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
데이터 수집 속도
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.
정확성과 정밀성
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.
커버리지 및 확장성
Mobile mapping covers far larger areas than traditional surveying, and scales better.
프로젝트에 적합한 접근 방식을 선택하는 방법
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: 모바일 매핑 사례 연구
인프라 매핑 회사 BeeXact 이탈리아 전체 광섬유 네트워크를 지도화하는 계약을 수주했으며, 이는 분명히 전통적인 측량 기법으로는 불가능한 일이었습니다. 이 프로젝트를 수행하기 위해 BeeXact는 모바일 매핑, 특히 도로 기반 매핑에 의존했고 OXTS에 측량 페이로드 설계를 요청했습니다.
그리고 RT3000 v4 BeeXact의 80대 이상의 매핑 차량으로 구성된 함대의 중심에 위치하며, 방대한 양의 LiDAR 데이터를 BeeXact의 고객을 위한 사용 가능한 통찰력으로 전환하는 맞춤형 데이터 처리 워크플로우를 갖추고 있습니다.
모바일 매핑 대 전통 측량; 미래는 어떻게 될까요?
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.
- 우리의 xNAV650, is popular with surveyors thanks to its accuracy levels and ability to be mounted to cars, planes, or even drones.
- 그리고 xRED has been integrated into autonomous mobile robots to provide navigation capabilities.
- 그리고 WayFinder family of products is able to perform real-time computations that would facilitate real-time surveying data.
