%0 Journal Article %T Efficient information %A Guo Jianguo %A Wang Xinming %A Zhou Jun %J Transactions of the Institute of Measurement and Control %@ 1477-0369 %D 2019 %R 10.1177/0142331218806961 %X This paper investigates a novel cooperative guidance law for the task of salvo attack based on efficient information. The concept of efficient information is first introduced as the basis of a multi-missile cooperative structure in a nominal engagement situation. The effective time of the efficient information, which can be regarded as an important parameter to indicate the ability of a missile to attack a given stationary target, is estimated by modifying the current time-to-go estimation method in the presence of a lateral acceleration constraint. Utilizing the effective time, a novel cooperative guidance law with better adaptiveness and robustness is proposed for multi-missile systems to realize the simultaneous attack. Finally, the effectiveness of the proposed cooperative guidance law is demonstrated via simulations %K Cooperative guidance %K consensus algorithms %K salvo attack %K multi-missiles %K Lyapunov theory %U https://journals.sagepub.com/doi/full/10.1177/0142331218806961