Time Allocation for Hypersonic Target Detection by Radar Network

In order to deal with the problem of limited warning time for radar detection of hypersonic targets, a time allocation model for seamless radar network tracking is established, and a greedy algorithm is developed to address it. Based on the time allocation principle of seamless radar network tracking and taking into account constraints such as radar tracking capacity, handover requirements and time interval occupancy, the model is solved with the greedy strategy of selecting the earliest visible time window of target detection as the initial tracking time window to achieve sustainable tracking of this kind of target throughout the radar network. While increasing the objective function value by almost 6%, the designed method takes more than 10% less handovers than the one that sequentially chooses the radar with the largest time window to participate in tracking. Additionally, the algorithm time is only 7. 5%c of the exact solution algorithm time, which increases the effectiveness of early warning detection mission planning for defense against near-space hypersonic targets. © 2023 China Spaceflight Society. All rights reserved.