Company

Per Heighwood Nielsen

Position: Senior Engineer
Education: M.Sc., Physics Engineering
Specialization: Reflector calculations
With TICRA since: 1978
Phone (direct): +45 3330 6748
Per Heighwood Nielsen has developed significant parts of the GRASP package. Important is the development of the Multi-reflector Add-On Package which is based on the Uniform Geometrical Theory of Diffraction. He has a long experience in ray tracing and diffraction calculations. In the later years he has worked intensively on the delicate scattering analyses of the Planck satellite. Per is member of TICRA's Board of Governors.

Papers

22
Mar
2017
Co-authors:
David Marote Alvarez, Marc Bergada, Raquel Gonzalez, Peter de Maagt

We report an RF study at 50 GHz of the Ice Cloud Imager, consisting of a parabolic reflector inside a semiclosed sun shield, as obtained with full-wave method of moments (MoM) and the asymptotic...

06
Oct
2015

Modeling the optical system on the Planck Space Telescope pre-launch was a very demanding task, with the huge electrical size, the strict accuracy requirements and the complicated feed arrangement...

12
Apr
2015
Co-authors:
N. Skou / S. S. Søbjærg / A. Ihle / M. Ivashina / O. Iupikov / K. v.‘t Klooster

The design of a push-broom multi-beam radiometer for future ocean observations is described. The radiometer provides a sensitivity one order of magnitude higher than a traditional conical scanning...

07
Apr
2014

Novel antenna architectures for real aperture multi-beam radiometers providing high resolution and high sensitivity for accurate sea surface temperature (SST) and ocean vector wind (OVW)...

18
Oct
2011

Kriging fitting, originally developed for geological exploitation, is here applied for fitting an expected pattern to noisy, irregular in-flight measurements of a satellite antenna...

18
Oct
2011

In-flight measurements of satellite antenna patterns are often given in a highly irregular grid and the data may be influenced by severe noise such that an accurate pat-tern determination is...

11
Apr
2011

Accurate fitting of the noisy irregular amplitude only main beam data is essential for the retrieval of the Planck space telescope geometry. Therefore, a novel two-step fit-ting algorithm which...

10
Oct
2010

The in-flight pattern measurements of a sub-millimetre space telescope may be improved by determining the actual reflector anomalies and then include the knowledge to these in the final pattern de...

12
Apr
2010

This paper summarises the work done over the last few years on the prediction of the RF performance of the Planck telescope, which was done initially to support the design phase, and later to...

12
Apr
2010

It is important to know the antenna patterns for the Planck Space Telescope with high accuracy for detectors operating at frequencies from 30 to 857 GHz. This could not be achieved with sufficient...

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