ACCURACY COMPARISON ON CULVERT-MODIFIED DIGITAL ELEVATION MODELS OF DSMA AND BA METHODS USING ALS POINT CLOUDS

Accuracy Comparison on Culvert-Modified Digital Elevation Models of DSMA and BA Methods Using ALS Point Clouds

High-resolution digital elevation models (HR-DEMs) originating from airborne laser scanning (ALS) point clouds must be transformed into Culvert-modified DEMs for hydrological and geomorphological analysis.To produce a culvert-modified DEM, information on the locations of drainage structures (DSs) (e.g., bridges and culverts) is essential.Neverthele

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Ultraviolet astronomical spectrograph calibration with laser frequency combs from nanophotonic lithium niobate waveguides

Abstract Astronomical precision spectroscopy underpins searches for life beyond Earth, direct observation of the Oven Mitts expanding Universe and constraining the potential variability of physical constants on cosmological scales.Laser frequency combs can provide the required accurate and precise calibration to the astronomical spectrographs.For c

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