MAIN SENSOR DETERMINING APPARATUS

PURPOSE:To enhance not only the reliability of the position of a target but also tracking continuity by determining the radar of the optimum preferential order in the tracking of the target as a main sensor on the basis of the level of capacity among a plurality of radars different in capacity. CONSTITUTION:A synthetic processing part 2 regards a target caught within a definite range as the same target among a plurality of the radar data of a sensor group 5 sent from an input processing part 1 and adds, for example, an index using the data related to a time gate waiting for the next radar sweep to the data of the target to sent out the data to a priority order calculation part 3. Next, the calculation part 3 uses the added index to determine the radar high in the use priority order possible in the optimum tracking as a main sensor within an indicated space region on the basis of the capacity including trapping properties corresponding to the new and old arranged topoqraphy of radar and sends out only the data of said radar to a display processing part 4. By this method, even in the sensor group 5 of radars different in capacity or in a radar system sending out no track quality TQ value, a main sensor possible in the optimum tracking can be determined.