Introduction
In modern warfare, to fulfill the ultimate goal of Network-Centric Warfare (NCW), it is necessary to fuse all information from different sensors at different places to form an Integrated Situation Awareness (ISA). However, sensor systematic biases are harmful to the fusion. For example, in the water-to-air GRFS system and space-to-air GRFS system described in [1], systematic biases disturb the accuracy awareness of the situation which is of vital importance to the Cooperative Engagement Capability (CEC). For the convenience of illustration, two simplified systems are described in Figure 1. As depicted in Figure. lA, when systematic biases exist and only one true target occurs, there would be two different targets displayed in the fusion center because the two measurements received from different radars at different locations are too far apart to be viewed as one target. Another opposite but still harmful scenario is described in Figure 1B, where two different true targets are viewed as one target in fusion center. Both phenomena are typical and unforgivable to NCW for the occurrence of systematic biases.
The Influence of Systematic Biases on Integrated Situation Awareness