[1]程晨. 小生境遗传算法在天线方向图中的优化[J].计算机技术与发展,2017,27(01):147-181.
　CHENG Chen. Optimization of Niche Genetic Algorithm in Antenna Pattern[J].,2017,27(01):147-181.
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 小生境遗传算法在天线方向图中的优化()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
27
期数:
2017年01期
页码:
147-181
栏目:
应用开发研究
出版日期:
2017-01-10

文章信息/Info

Title:
 Optimization of Niche Genetic Algorithm in Antenna Pattern
文章编号:
1673-629X（2017)01-0147-05
作者:
 程晨
 南京邮电大学 通信与信息工程学院
Author(s):
 CHENG Chen
关键词:
 ; 动中通; 卫星天线; 小生境遗传算法; 自适应交叉
Keywords:
 ; motion; satellite antenna; niche genetic algorithm; adaptive crossover
分类号:
TP39
文献标志码:
A
摘要:
 车载动中通是指地球站系统在行驶的车中实现卫星通信，由于其实时运动的特性，导致在实际应用中，要求系统以最短的时间、最高的精度找到目标卫星信号最强的点，即AGC信号强度最大的点。一般情况下，由地球站系统所在的当地经度和纬度以及目标卫星经度，根据理论公式能够计算出对应卫星场强最大点。但是由于一些其他因素的影响，如当地天气、温度、湿度以及其他不可忽略的干扰因素，导致找到的目标点在旁瓣而并非在主瓣，旁瓣信号强度低，无法满足通信要求。简单介绍了卫星通信的基本原理，以及一般情况下，根据理论公式计算的卫星场强最大点的推导过程，重点描述了自适应的小生境遗传算法实现多峰全局函数的最优寻解以及该算法在卫星通信中的应用。其中遗传算法是仿照自然界生物进化理论中优胜劣汰过程的一类寻找最优解方法。实践证明，该方法有很好的实用性。
Abstract:
 Car mobile communications system refers to the realization of satellite communications earth station in a moving vehicle,since the real-time motion characteristics,the system is needed to find the target point with strongest satellite signal,which is the point of maxi-mum AGC signal strength. In general,according to local longitude and latitude for the earth station system and longitude of the target sat-ellite,the corresponding points with maximum satellite field strength can be calculated by the theoretical formula. However,due to some other factors,such as local weather,temperature,humidity,and other confounding factors,the target point is found in the side lobe and not in the main lobe,and side lobe signal strength is low,which cannot meet the communication requirements. The basic principles of satellite communication is introduced briefly,and under normal circumstances,according to the derivation of the maximum point of the satellite field theory formula,the niche genetic algorithm is focused to describe the implementation of adaptive multimodal global function to find the optimal solution and algorithm in satellite communication. The genetic algorithm is a kind of method to find the optimal solution mod-eled on the natural biological process in evolution theory of survival of the fittest. Practice has proved that it has good practicability.

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更新日期/Last Update: 2017-04-05