RT Journal Article
SR Electronic
T1 A new array concept using spatially distributed subarrays for unambiguous GNSS interference mitigation in automotive applications
JF NAVIGATION: Journal of the Institute of Navigation
JO NAVIGATION
FD Institute of Navigation
SP 23
OP 41
DO 10.1002/navi.353
VO 67
IS 1
A1 Marius Brachvogel
A1 Michael Niestroj
A1 Soeren Zorn
A1 Michael Meurer
A1 Syed N. Hasnain
A1 Ralf Stephan
A1 Matthias A. Hein
YR 2020
UL https://navi.ion.org/content/67/1/23.abstract
AB Radio frequency interference (RFI) poses a severe problem for conventional GNSS receivers. Even low powered RFI can block the reception of satellite signals and prevent a position determination. Antenna array systems have been proven suitable to counteract RFI by incorporating spatial processing techniques. The large size of uniform rectangular arrays (URA) with half-wave antenna spacing impedes an installation in cars intended for the consumer mass market, where a hidden installation is a strict requirement by industry and customers.This paper introduces a new approach, where a conventional URA is split into distributed linear subarrays with the aim to reduce their footprint but to maintain the possibility of spatial processing. The achievable gain in robustness against RFI is evaluated. Drawbacks in terms of manifold ambiguities and their consequences for spatial processing techniques are also discussed. Furthermore, the accuracy of positioning results derived from a field test is put into context with a single antenna receiver.