Fast-Fourier-based error propagation for the gravimetric terrain correction
MetadataShow full item record
We have identified a gap in the literature on error propagation in the gravimetric terrain correction. Therefore, we have derived a mathematical framework to model the propagation of spatially correlated digital elevation model errors into gravimetric terrain corrections. As an example, we have determined how such an error model can be formulated for the planar terrain correction and then be evaluated efficiently using the 2D Fourier transform. We have computed 18.3 billion linear terrain corrections and corresponding error estimates for a 1 arc-second (~30 m) digital elevation model covering the whole of the Australian continent.
Showing items related by title, author, creator and subject.
Featherstone, Will; McCubbine, Jack; Brown, N.; Claessens, Sten; Filmer, Michael; Kirby, Jon (2018)We describe the computation of the first Australian quasigeoid model to include error estimates as a function of location that have been propagated from uncertainties in the EGM2008 global model, land and altimeter-derived ...
An evaluation of FFT geoid determination techniques and their application to height determination using GPS in Australia.Zhang, Kefei (1997)A new, high resolution, high precision and accuracy gravimetric geoid of Australia has been produced using updated data, theory and computational methodologies. The fast Fourier transform technique is applied to the ...
Error sources and data limitations for the prediction ofsurface gravity: a case study using benchmarksFilmer, Michael; Hirt, Christian; Featherstone, Will (2012)Gravity-based heights require gravity values at levelled benchmarks (BMs), whichsometimes have to be predicted from surrounding observations. We use EGM2008 andthe Australian National Gravity Database (ANGD) as examples ...