PT  - JOURNAL ARTICLE
AU  - Marius Brachvogel
AU  - Michael Niestroj
AU  - Michael Meurer
AU  - Syed N. Hasnain
AU  - Ralf Stephan,
AU  - Matthias A. Hein
TI  - Space-Time Adaptive Processing as a Solution for Mitigating Interference Using Spatially-Distributed Antenna Arrays
AID  - 10.33012/navi.592
DP  - 2023 Sep 21
TA  - NAVIGATION: Journal of the Institute of Navigation
PG  - navi.592
VI  - 70
IP  - 3
4099  - https://navi.ion.org/content/70/3/navi.592.short
4100  - https://navi.ion.org/content/70/3/navi.592.full
SO  - NAVIGATION2023 Sep 21; 70
AB  - Antenna arrays and spatial processing techniques are among the most effective countermeasures against interference. Here, we demonstrate a new array concept consisting of spatially-distributed subarrays that are small enough to fit inside the non-metallic parts of an automobile. This will facilitate concealed installation of these devices in bumpers or side mirrors, which is a strict requirement of the industry and preferred by the customers. Using beamforming algorithms, this array was proven to be robust against jammers in the L1 band. The large distances between the individual antenna elements resulted in a non-negligible baseband delay that violated the narrowband assumption and increased with bandwidth. Hence, this paper demonstrates the influence of a jammer in the L5 band. Space-time adaptive processing that allows for compensation of the delays was introduced and analyzed. Improvements in interference mitigation capabilities were assessed and compared to those of pure spatial state-of-the-art implementation. Real-life measurement data was used to ensure realistic results.