MULTI-WAVELENGTH AIRBORNE LASER SCANNING FOR ARCHAEOLOGICAL PROSPECTION

Multi-wavelength Airborne Laser Scanning for Archaeological Prospection

Airborne laser scanning (ALS) is a widely used technique for the sampling of the earth’s surface. Next to the widely used geometric information current systems provide additional information about the signal strength of each echo. In order to utilize this information, radiometric calibration is essential. As a result physical observables that characterise the backscatter characteristic of the s...

Full-waveform airborne laser scanning as a tool for archaeological reconnaissance

Airborne Laser Scanning (ALS), also referred to as LiDAR, is a rather new technique to produce dense and high precision measurements of the topography of the Earth’s surface (Ackermann, 1999; Kraus, 2004, 449470; Wehr and Lohr, 1999). The scanning device is typically mounted at the bottom or below an aeroplane or helicopter. For the determination of object points, the laserscanner emits short i...

Principles of airborne laser scanning

Figure 1 represents the paradigm of laser scanning. A paradigm as generally known focuses on the basics and ignores minor matters. The paradigm of laser scanning can be characterised in the following way: • A bundle of 3D-vectors, positioned by GPS and oriented by IMU • Active sensors Figure 2 illustrates the paradigm of Stereo-Photogrammetry and can be characterized by: • 2 directed bundles, w...

Efficient Noise Reduction of Laser Scanning Data for Archaeological Survey

Recently, a ground based laser scanning sensor is receiving more attention as an useful tool for real-time acquisition of 3D data, and its applications are proposed in various fields. For example, a topographic survey for archaeological sites is performed efficiently using a laser scanning sensor. A traverse survey is one of the typical methods for topographic map in archaeological sites. Usual...

Multi-wavelength Laser Photoacoustics