Research On Key Techniques Of Firing Data Calculator For Large Caliber Gun

In order to meet the need of firing computation of the large caliber artillery, wehave improved the performance of the previous generation of calculators based on acooperative project with XXX institude named” the Design of New Artillery FiringData Calculator”. The battery capacity of the hand-held calculator withbattery-powered primarily is relatively limited. The replacement of the battery isfrequent in the field operations which will bring great inconvenience and reduce theoperational efficiency, therefore, how to reduce the power consumption to extendbattery life is very important based on the premising of ensuring the performancerequirements. In addition, we must maximize the speed and accuracy of computationto meet the operational needs. The research theme of this artic le is surrounding theissues mentioned above, and mainly covering the following aspects.1. The program design of firing data calculator based on dual-core architecture.The general planning of firing calculator which is composed by low-power MCUand high-speed floating point DSP is proposed, and a series of improvements whichis aimed at the shortcomings of the previous generation calculators is made underthe application requirements. The battery management module is added to thesystem to meet the requirements for the power indicators which can preventover-charge and over-discharge, improve the efficiency of battery and extend theworking life of the battery. The speed of the calculator here is increased by about8times compared with the previous generation calculators which can meet the requirements of the speed and accuracy of the calculation.2. The software design of firing data calculator. The software module based onthe dual-core architecture is proposed. The ballistic parallel algorithm, batterycharge management and DSP-line programming procedure based on the dual-corearchitecture are achieved on this software platform. The user interface (GUI) isestablished. Practice indicates that the model can meet the targets of the functionalrequirements including high code execution efficiency, run fast, user-friendlyinterface, scalability and portability, etc.3. The design of the low-power for the firing data calculator. How to reduce thepower consumption of the firing data calculator to extend the battery working lifewithout affecting its performance is researched. The synergy optimization of thepower with the hardware and the software is achieved, and the ideas of low-powergo through all the design process, including the device selection, the supp ly mode ofthe power, the power optimization of every module, time-sharing power supply, theoptimization of software, etc. Compared with the previous generation calculators,the average power consumption of the calculator here is reduced by about a halfaiming at the requirements of the power consumption when it works normally.4. Dynamic power management of the calculator. The research of the dynamicpower management of the calculator caused by a variety of operating workingmodes in the entire artillery fire command system and the switch between modeshaving extra time and energy loss. The dynamic power management of calculator isstudied. The algorithm of the hybrid model is proposed after the comprehensiveanalysis of various work behaviors of the calculator system and the classification ofthe load time series. The algorithm’s average competitive ratio is0.62, delay ratio isless than0.13and the hit ratio is greater than0.6has better versatility than others.