Second-order statistics analysis and comparison between arithmetic and geometric average fusion: Application to multi-sensor target tracking Articles uri icon

publication date

  • November 2019

start page

  • 233

end page

  • 243

volume

  • 51

International Standard Serial Number (ISSN)

  • 1566-2535

Electronic International Standard Serial Number (EISSN)

  • 1872-6305

abstract

  • Two fundamental approaches to information averaging are based on linear and logarithmic combination, yielding the arithmetic average (AA) and geometric average (GA) of the fusing data, respectively. In the context of multisensor target tracking, the two most common formats of data to be fused are random variables and probability density functions, namely v-fusion and f-fusion, respectively. In this work, we analyze and compare the second-order statistics (including variance and mean square error) of AA and GA in terms of both v-fusion and f-fusion. The case of weighted Gaussian mixtures representing multitarget densities in the presence of false alarms and missed detections (whose weight sums are not necessarily unit) is also considered, the result of which turns out to be significantly different from that of a single target. In addition to exact derivation, exemplifying analyses and illustrations are also provided.

keywords

  • multisensor fusion; average consensus; distributed tracking; covariance intersection; arithmetic mean; geometric mean; linear pool; log-linear pool; aggregation operator; distributed data fusion; covariance intersection; sensor networks; consensus; mixtures; systems; filter; bayes