Title :
Effect of system geometry of multi-sensor on accuracy of target position estimation
Author :
Zhaolei, Liu ; Guangyi, Zhang
Author_Institution :
Nat. Key Lab. of Radar Signal Process., Xidian Univ., Xi´´an, China
Abstract :
The paper investigates the effect of system geometry of netted sensors on the performance of target position estimation. Each sensor can provide range and bearing measurements, bearing only, or range only measurements. Analyses are based on the Cramer-Rao low bound and geometric dilution of precision in a 2D plane. It is concluded that target position estimation accuracy is dependent not only on the range between the sensors and the target but also on the intersection angles between the sensors´ line-of-sight to the target. Scenarios in which there are two or three sensors are discussed in detail.
Keywords :
array signal processing; direction-of-arrival estimation; distance measurement; distributed sensors; sensor fusion; target tracking; Cramer-Rao low bound; bearing measurements; fusion accuracy; multisensor system geometry effects; netted sensors; precision geometric dilution; range measurements; sensor/target line-of-sight; target position estimation accuracy; Azimuth; Coordinate measuring machines; Geometry; Laboratories; Noise measurement; Position measurement; Radar measurements; Radar tracking; Sensor systems; Target tracking;
Conference_Titel :
Radar Conference, 2004. Proceedings of the IEEE
Print_ISBN :
0-7803-8234-X
DOI :
10.1109/NRC.2004.1316490
