Research On The Pivotal Technology Of Intelligent Fire Control System Of Armed Helicopters Based On Data Link

The collaborative-air-combat of the armed helicopters is one of the basic developing orientation of the high-technology air combat at present. Assuring the armed helicopters get the battle information timely and effectively is the most pivotal factor in the air battle. Therefore , the paper gives a method of information sharing among helicopters by the data link. Combining the intelligent algorithms, we have a research on the pivotal technology of fire control system of armed helicopters.Firstly, considering the net topology of data link and the components of communication delay, then the delay of the data translation is compensated using Kalman filtering algorithms. The simulation results indicate that the method for compensating delay is effective for both constant-velocity and maneuvering target.Secondly, the tactics decision-making system of armed helicopters collaborative combat is studied. At first, a method of situation analyzing is devised. Based on this, a means of target assignment and attack sequence based on Genetic Algorithm is proposed. Then we propose a method of weapon distribution using Artificial Fish-swarm Algorithm. At last, this paper mainly works on the maneuver decision of helicopters air-to-air combat, gives a method of single helicopter maneuver decision led to the Fuzzy-logic illation. All the methods mentioned above are simulated and their validation is proved.Thirdly, the 3-D guidance law of air-to-air missiles is studied. First of all, the 3-D guidance model for missile-to-target is given. And three kinds of 3-D guidance law are devised, which are proportional navigation, sliding mode guidance law and intelligent sliding mode guidance law. The simulation of every guidance law is given, and based on the simulation result, the performance of every guidance law is analysed and compared.And then, the control law of air-to-air missiles is researched. In order to devise the control law for missiles, we research on the six-degree of freedom dynamics model of the missile firstly. Then the sliding mode control law is devised in this paper. And considering the uncertainty of the missile model, we devise the control law based on disturbance observer. The simulation results show that the law has good performance.Finally, 3D animation simulation for armed helicopters air combat is studied. The relative functions of MULTIGEN Creator and Vega are introduced, the method of using Vega module in Visual C++ environment is discussed. And a 3D animation simulation software is developed to show the process of armed helicopters attacking targets.