TY  - JOUR
A1  - Berg, Jonas
A1  - Müller, Simon
A1  - Diewald, Andreas R.
T1  - Far- and near range measurements with a synthetic aperture radar for educational purposes and comparison of two different signal processing algorithms
T2  - Advances in Radio Science
N2  - In this paper two simple synthetic aperture radar (SAR) methods are applied on data from a 24 GHz FMCW radar implemented on a linear drive for educational purposes. The data of near and far range measurements are evaluated using two different SAR signal processing algorithms featuring 2D-FFT and frequency back projection (FBP) method (Moreira et al., 2013). A comparison of these two algorithms is performed concerning runtime, image pixel size, azimuth and range resolution. The far range measurements are executed in a range of 60 to 135 m by monitoring cars in a parking lot. The near range measurement from 0 to 5 m are realised in a measuring chamber equipped with absorber foam and nearly ideal targets like corner reflectors. The comparison of 2D-FFT and FBP algorithm shows that both deliver good and similar results for the far range measurements but the runtime of the FBP algorithm is up to 150 times longer as the 2D-FFT runtime. In the near range measurements the FBP algorithm displays a very good azimuth resolution and targets which are very close to each other can be separated easily. In contrast to that the 2D-FFT algorithm has a lower azimuth resolution in the near range, thus targets which are very close to each other, merge together and cannot be separated.
KW  - synthetic aperture radar (SAR)
KW  - 24 GHz FMCW radar
KW  - signal processing algorithm
KW  - near range measurement
KW  - far range measurement
KW  - 2D-FFT
KW  - frequency back projection (FBP)
KW  - Radar
KW  - Synthetische Apertur
KW  - Signalverarbeitung
KW  - Messung
KW  - Algorithmus
Y1  - 2022
UR  - https://hst.opus.hbz-nrw.de/frontdoor/index/index/docId/247
UR  - https://nbn-resolving.org/urn:nbn:de:hbz:tr5-2475
VL  - 19
SP  - 221
EP  - 232
PB  - Copernicus Publications
ER  -