The netted radar system(NRS)has been proved to possess unique advantages in anti-jamming and improving target tracking performance.Effective resource management can greatly ensure the combat capability of the NRS.In t...The netted radar system(NRS)has been proved to possess unique advantages in anti-jamming and improving target tracking performance.Effective resource management can greatly ensure the combat capability of the NRS.In this paper,based on the netted collocated multiple input multiple output(CMIMO)radar,an effective joint target assignment and power allocation(JTAPA)strategy for tracking multi-targets under self-defense blanket jamming is proposed.An architecture based on the distributed fusion is used in the radar network to estimate target state parameters.By deriving the predicted conditional Cramer-Rao lower bound(PC-CRLB)based on the obtained state estimation information,the objective function is formulated.To maximize the worst case tracking accuracy,the proposed JTAPA strategy implements an online target assignment and power allocation of all active nodes,subject to some resource constraints.Since the formulated JTAPA is non-convex,we propose an efficient two-step solution strategy.In terms of the simulation results,the proposed algorithm can effectively improve tracking performance in the worst case.展开更多
A Chinese court has ruled that a woman is not guilty of murder and acted in selfdefense when she chased down robbers with her car before driving into them, leaving one dead and one injured.
IN the summer of 1937, after the Japanese invaded northeast China, they again encroached upon the northern lands. The Chinese army and common people, driven by anger and hatred, fought against the invaders, sparking o...IN the summer of 1937, after the Japanese invaded northeast China, they again encroached upon the northern lands. The Chinese army and common people, driven by anger and hatred, fought against the invaders, sparking off a full scale war of resistance against Japanese aggression.展开更多
The manner and conditions of running the decision-making system with self-defense electronic jamming are given. After proposing the scenario of applying discrete dynamic Bayesian network to the decision making with se...The manner and conditions of running the decision-making system with self-defense electronic jamming are given. After proposing the scenario of applying discrete dynamic Bayesian network to the decision making with self-defense electronic jamming, a decision-making model with self-defense electronic jamming based on the discrete dynamic Bayesian network is established. Then jamming decision inferences by the aid of the algorithm of discrete dynamic Bayesian network are carried on. The simulating result shows that this method is able to synthesize different targets which are not predominant. In this way, various features at the same time, as well as the same feature appearing at different time complement mutually; in addition, the accuracy and reliability of electronic jamming decision making are enhanced significantly.展开更多
Shutter Island is a movie directed by Martin Scorsese.It tells a story about a psychotic,Teddy,who committed a serious crime and lived in fantasy from then on.A group of psychologists tried to help him by exposing the...Shutter Island is a movie directed by Martin Scorsese.It tells a story about a psychotic,Teddy,who committed a serious crime and lived in fantasy from then on.A group of psychologists tried to help him by exposing the reality and forcing him to face it.At last,Teddy's memory was recovered.Yet he chose to receive lobotomy to end his pain.From Freud's psychoanalytic point of view,Teddy's tragedy is caused by the conflict between his id,ego and superego,and his fantasy world is a result of self-defense mechanism.展开更多
基金National Natural Science Foundation of China(Grant No.62001506)to provide fund for conducting experiments。
文摘The netted radar system(NRS)has been proved to possess unique advantages in anti-jamming and improving target tracking performance.Effective resource management can greatly ensure the combat capability of the NRS.In this paper,based on the netted collocated multiple input multiple output(CMIMO)radar,an effective joint target assignment and power allocation(JTAPA)strategy for tracking multi-targets under self-defense blanket jamming is proposed.An architecture based on the distributed fusion is used in the radar network to estimate target state parameters.By deriving the predicted conditional Cramer-Rao lower bound(PC-CRLB)based on the obtained state estimation information,the objective function is formulated.To maximize the worst case tracking accuracy,the proposed JTAPA strategy implements an online target assignment and power allocation of all active nodes,subject to some resource constraints.Since the formulated JTAPA is non-convex,we propose an efficient two-step solution strategy.In terms of the simulation results,the proposed algorithm can effectively improve tracking performance in the worst case.
文摘A Chinese court has ruled that a woman is not guilty of murder and acted in selfdefense when she chased down robbers with her car before driving into them, leaving one dead and one injured.
文摘IN the summer of 1937, after the Japanese invaded northeast China, they again encroached upon the northern lands. The Chinese army and common people, driven by anger and hatred, fought against the invaders, sparking off a full scale war of resistance against Japanese aggression.
基金the National Natural Science Fundation of China (10377014).
文摘The manner and conditions of running the decision-making system with self-defense electronic jamming are given. After proposing the scenario of applying discrete dynamic Bayesian network to the decision making with self-defense electronic jamming, a decision-making model with self-defense electronic jamming based on the discrete dynamic Bayesian network is established. Then jamming decision inferences by the aid of the algorithm of discrete dynamic Bayesian network are carried on. The simulating result shows that this method is able to synthesize different targets which are not predominant. In this way, various features at the same time, as well as the same feature appearing at different time complement mutually; in addition, the accuracy and reliability of electronic jamming decision making are enhanced significantly.
文摘Shutter Island is a movie directed by Martin Scorsese.It tells a story about a psychotic,Teddy,who committed a serious crime and lived in fantasy from then on.A group of psychologists tried to help him by exposing the reality and forcing him to face it.At last,Teddy's memory was recovered.Yet he chose to receive lobotomy to end his pain.From Freud's psychoanalytic point of view,Teddy's tragedy is caused by the conflict between his id,ego and superego,and his fantasy world is a result of self-defense mechanism.
