在经济全球化的形势下,人民币的走势是关系到中国外贸企业生存、国际地位以及国家金融环境的重要因素,因此对人民币/美元汇率进行预测是十分有必要的。通过对GARCH-M模型在预测人民币美元汇率的可行性,时间序列存在异方差性和自相关性的论证,建立相应的GARCH(1,1)-M模型,并运用模型对美元/人民币汇率进行预测。表明在现实中可以运用GARCH—M模型进行汇率趋势预测,但是由于检验的数据较少,所以不能达到精确的预期目的。
Under economic globalization, the situation of Renminbi is related to the existence, international status and financial environment of Chinese foreign trade enterprises, thus, it is necessary to forecast Renminbi/US dollar exchange rate. Based on the demonstration of the feasibility, heteroseedasticity and self-dependablity of time series, related GARCH ( 1,1 ) Model is set up, the model is used to forecast US dollar/Renminbi exchange rate. The results show that GARCH-M Model can be used to fore- cast the exchange rate in reality but because of few testing data, the forecast can not reach accuracy destination.