A Mini-Review on Pseudolite-Based User Positioning: Are Simpler Approaches Better?
Chih-Chun Chen (RWTH Aachen University)
Tim Reuscher (RWTH Aachen University)
H. Vallery (RWTH Aachen University, TU Delft - Biomechatronics & Human-Machine Control)
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Abstract
Pseudolites (PLs) transmit Global Navigation Satellite System (GNSS)-like signals and provide effective solutions to replace or augment GNSS in environments where signals are denied or degraded. This review provides an overview of existing studies on PL-based user positioning, categorized into standalone methods and sensor fusion approaches. Further, it examines the algorithms, implementations, and performance of these approaches. Standalone PL and simple algorithms are popular and appear to outperform sensor fusion and more complex algorithms when considering positioning accuracy alone. However, this finding may be highly misleading, as simpler approaches also tend to use simpler evaluation scenarios. Studies that directly compare algorithms are scarce. This indicates the need for systematic benchmarking.
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