Project Design And Algorithm Research For The Path Planning Sub-system In The Networked Data Link System

Purpose of path planning is to ensure maximum possibility to accomplish missionunder circumstances of safety and cost effectiveness.Mission process assurancerequirements must be met for flight cours planning, including data link communication,mid-way refueling,etc). furthermore, corresponding restricting condition must also bemet. Hard restriction is referred to physical limitation to meet designated requirements,such as terrain, obstacle(wreckage, power supply tower, bridge,etc.), parameters such asdepth, altitude, range and width must be considered. Soft restriction is referred toartificially defined limitations, such as political border, air defense section, etc.For path planning crossing man-made threat in hostile environment, such as airdefense radar, ground to air missiles, it is necessary to take other measures to improvepossibility of mission execution.In this paper, for aircraft flying from base to mission execution target crossinghostile air defense fire section, method and application system about how to selectoptimum path is proposed. Section of base and mission execution target has beendefined as a network, length of grid is desined as function of reconnaissance probability.Then, flying course is desined to cross the network, in the meanwhile, probability to bedetected is required to be reduced to minimum.Therefore, models of aircraft, environment and air defense radar are established inthis paper. Highest point of network, border and its related characteristics are defined. Inthis paper, performance of aircraft is defined as large bomber. The reason is, firstly,maneuvability of bomber is relatively stable, secondly, urgent requirement is focused onpath design for bomber especially. Environment establishment, is to represent crossingspace of aircraft with help of altitude and discretess cluster. Radar establishment, isapplied for function calculation for grid side length as detection probability. After thesemodels are established, short-cut algorithm could be appled for network model,calculated grid side leghth will be represented as probability of one detected path.Focused on contradiction between full-scall optimization and calculation speedamong flight planning system, in this paper, legacy algorithm is applied for optimization of planning system performance. Unit is formed as per aircraft maneuverability,furthermore, crossing and variation factors are designed. In practice, storage andprocessing performance requirements are degraded effectively to improve full-scaleoptimization.