AbThe coordinated use of multiple distributed sensors by network communication has the potential to substantially improve estimates of target positions, features, and attributes. This improvement is primarily due to geometric diversity, complementary sensor information, and different coverage areas. Unfortunately, sensor networks are not without their challenges. In particular, there is a balance between network bandwidth constraints and the maintenance of a consistent picture of the scenario across the network participants. In this talk we will discuss pertinent issues including network communication schemes, track initiation and maintenance, and bias mitigation.