| 摘要 |
PCT No. PCT/SE96/00609 Sec. 371 Date Nov. 7, 1997 Sec. 102(e) Date Nov. 7, 1997 PCT Filed May 9, 1996 PCT Pub. No. WO96/35962 PCT Pub. Date Nov. 14, 1996A phased array radar system for target tracking having a track initiation unit, a track prediction unit, a scheduling unit, a track selection unit, and a transmitter/receiver unit. The track initiation unit initiates new tracks representing detected aircraft targets. The track prediction unit predicts the expected position and the calculated position uncertainty of the target as a function of time and the minimal, maximal and optimal time difference to the next measurement. The scheduling unit performs an independent calculation of a sequence of possible time intervals to the next measurement in accordance with specified conditions, and then performs an intersection operation between the calculated sequences of time intervals in order to calculate the optimal time interval to the next measurement. A track selection unit selects that track which has the shortest remaining time interval, Ki, to the next measurement and decreases the time interval to the next measurement for all other tracks with Ki. The transmitter/receiver unit registers an echo from the target and calculates, in a known manner, values for distance, speed, bearing and uncertainty in the distance and speed calculations, which are transferred to the track prediction unit for further calculations. |
