Study Of Key Technology Ofair-to-ground Mission Planning Systems

Mission Planning Systems, abbreviated to MPS, is the kernel subsystem of air-to-ground combat commanding system, which is applied in such flight phases as taking off,cruising, stealthy penetrating, air-to-ground attacking and returning to port. MPS elaborates thorough battle plans for air-to-ground attack of the air force, which are necessary to improve the probability of survival and combat effectiveness of combat aircrafts. MPS in advanced countries have been made into military equipments and the equipment carriers have been used in naval/army/air forces. The important position and military functions of MPS decide that the fruits of MPS which can be known and used in public are very limited.The systematic research of MPS has not been fully developed in our country, and its relative research about MPS is mainly centered on route planning and threat level quantization whose research is mostly carried on around the tactics of threat avoiding. And this mainly fit for two aspects. One is for the stealthy penetration attack with sparse firepower in air defence and low-intensity of resistance. The other is stealthy penetrating mission planning of such small aircrafts as pilotless planes and cruise missiles. These processes of mission planning do not match the active-attack strategy in stealthy penetration which is mainly and must be adopted under the conditions of antiaircraft system with powerful fire,high density and network-based command. So it causes the consequence that there is a considerable gap between the results of mission planning and the practical application. At present, the power is quite weakly imposed on the research into the integrated theory and complete technology in practice based on route planning, threat quantization and task allocation in our country.Considering the environment of current high-density, high-overlap and high-lethality stealthy penetration, and according to the thought that active attack strategy is the core strategy for stealthy penetration planes to achieve a strong probability of survival and a high task completion ratio, the thesis explores the research into multiple crucial technology of air-to-ground MPS with the purpose of serving for the strategy of active attacking. The paper also systematically and integratedly explores threat evaluation, route planning and task allocation and application. The achieved innovation results in the thesis are as follows:From the angle of attack operations, the paper adopts the needed ammunition equivalence to quantize their threat when stealthy penetration planes apply the active-attack mode of eliminating to wholly suppress/eliminate ground antiaircraft missile. The paper puts forward threat level quantization method based on ammunition equivalence. So the relation between the amount of airborne weapons and probability of stealthy penetration survival is solved. At the same time, the problems are also solved that in overlap region of antiaircraft missiles, threat level is usually difficult to be quantized and the quantized results are often inaccurate.Simultaneously, the thesis introduces the threat sorting method based on rough sets for solving the problem of threat sorting of the ground antiaircraft system while the results of ammunition equivalence on the threat level are equal to each other. The method provides a new thought for solving the problem of threat sorting of ground antiaircraft missile with parameters that are inadequate and difficult to access.The paper puts forward a relatively complete quantization method of threat level in the MPS of air-to-ground attack, based on the comprehensive application of the quantization of threat level as well as threat level sorting based on rough sets. It also provides the practical quantized tool and criteria for route planning, quantization and planning of airborne weapons, the evaluation of combat effect, and tactics efficiency.The thesis raises the demands for route planning required by MPS based on active attack and elaborates the principles followed by route planning of MPS. And in this thesis an algorithm of route planning is given based on active attack tactics whose tenet is to support and execute the antiaircraft strategy in air-to-ground attack. To be exact, the strategy goes that the stealthy penetration planes would hide themselves as far as possible against ground threats. And if they could not hide successfully, they would attack ground threats, especially the weakest among them. The paper designates the global optimized dynamic threat space searching tree model for active-attack tactics. The paper efficiently limits the width of route planning region by proposing curve/line ratio, so making searching scope correspond with time requirement. Then the mobility restricted cone confined and formed by plane mobility performance and constrained conditions of planned route is adopted to further lessen the scope of pending searching points and ultimately control searching scope from time, oil and the entirety, which further improves the searching efficiency of searching route points and processing. Simultaneously, the implementation process of route planning method is given and the solutions to various situations when route planning is dealt with by using this method are also analyzed.According to the achieved results of threat level ammunition equivalence and route planning based on active attack, the paper further studies the task allocation and scheme generation of air-to-ground MPS. On the premise of ensuring combat task accomplishment, taking tactics efficiency as the target, the task allocation model is systematically built. Besides, the computing method of the delivery points of airborne weapons is put forward. After these analysis, with the combat plans of main attack planes as the core, weapon delivery allocation model and armed forces/sources portfolio optimization model of the main attack planes and auxiliary attack ones that are closely connected with route planning are set up. The optimum deployment of the types, numbers of belligerent planes/airborne weapons can be realized through MPS before actual combat. The paper also studies time series of the main attack planes and other various attack planes. Furthermore, the paper sums up the structure and form of output of task plans that can be directly applied in combat command. According to practical needs of MPS in a typical air-to-ground attack, the chapter concludes in the demonstration of entire simulation of threat level ammunition equivalence method, route planning method and task allocation method based on active attack strategy.Finally, the thesis analyzes the function requirements of typical MPS and puts forward top-level software/hardware framework program and functional system model of MPS of the air-to-ground attack, intending to provide foundation and reference for the design and development of air-to-ground MPS and its overall program in China.