Options
Optimization of airborne antenna geometry for ocean surface scatterometric measurements
Citation Link: https://doi.org/10.15480/882.2350
Publikationstyp
Journal Article
Date Issued
2018-09-20
Sprache
English
Institut
TORE-DOI
TORE-URI
Journal
Volume
10
Issue
10
Start Page
Art.-Nr. 1501
Citation
Remote Sensing 10 (10): 1501- (2018-10-01)
Publisher DOI
Scopus ID
Publisher
MDPI
We consider different antenna configurations, ranging from simple X-configuration to multi-beam star geometries, for airborne scatterometric measurements of the wind vector near the ocean surface. For all geometries, track-stabilized antenna configurations, as well as horizontal transmitter and receiver polarizations, are considered. The wind vector retrieval algorithm is generalized here for an arbitrary star geometry antenna configuration and tested using the Ku-Band geophysical model function. Using Monte Carlo simulations for the fixed total measurement time, we show explicitly that the relative wind speed estimation accuracy barely depends on the chosen antenna geometry, while the maximum wind direction retrieval error reduces moderately with increasing angular resolution, although at the cost of increased retrieval algorithm computational complexity, thus, limiting online analysis options with onboard equipment. Remarkably, the simplest X-configuration, while the simplest in terms of hardware implementation and computational time, appears an outlier, yielding considerably higher maximum retrieval errors when compared to all other configurations. We believe that our results are useful for the optimization of both hardware and software design for modern airborne scatterometric measurement systems based on tunable antenna arrays especially, those requiring online data processing.
Subjects
airborne scatterometer
multi-beam antenna configuration
star geometry
ocean surface
wind vector
retrieval accuracy
DDC Class
530: Physik
600: Technik
Loading...
Name
remotesensing-10-01501-v2.pdf
Size
30.51 MB
Format
Adobe PDF