Deghosting Method for Cross Localization in Distributed High Frequency
Surface Wave Radar
Abstract
In this paper, we tackle the challenging problem of multi-target cross
localization within a novel distributed high-frequency surface wave
radar (HFSWR). This system consists two transmitter-receiver pairs, each
of which can correspondingly generate a set of Range-Doppler
measurements. By associating the Range-Doppler measurements from the
same target, the individual target location can be derived using the
associated measurements. However, when multiple targets are involved, it
is unknown which measurements originate from the same target, leading to
ambiguities in the measurement-to-measurement association. False
associations can result in the ghosts, ultimately degrading the overall
system performance. To deal with the ghosts, we propose a three-stage
deghosting method that incorporates the geometric characteristics of the
system, the velocity features of the targets and the motion features of
the targets across multiple frames. ̵The simulation results demonstrate
the effectiveness of our proposed method compared with the other
investigated deghosting algorithms. Our proposed approach exhibits
robust target detection capability while significantly reducing both the
OSPA error and the cardinality error.