CAJ | 학술논문

卫星导航接收机的抗干扰问题日益突出，对于有效的抗干扰方法的研究显得尤为重要。本文对STFT（短时傅立叶变换）算法进行了修正，提出一种时间窗的改进方法。该算法的实质就是时间窗通过位移和压缩变换得到新的窗函数族．克服了原窗函数缺陷。改进的STFT算法能够有效地提高卫星导航接收机的抗干扰能力，与传统的抗干扰方法相比．该方法更具有工程实际意义。
위성도항접수궤적항간우문제일익돌출，대우유효적항간우방법적연구현득우위중요。본문대STFT（단시부립협변환）산법진행료수정，제출일충시간창적개진방법。해산법적실질취시시간창통과위이화압축변환득도신적창함수족．극복료원창함수결함。개진적STFT산법능구유효지제고위성도항접수궤적항간우능력，여전통적항간우방법상비．해방법경구유공정실제의의。
The problem of anti-jamming for satellite navigation receiver becomes increasingly prominent, it is particularly important for effective anti-jamming method. In this paper, a new algorithm is proposed for the time window based on STFT algorithm. The essence of this algorithm is the new window function obtained from displacement and compression transform of the time window and overcomes the defects of original window function. The new algorithm could improve the ability of antijamming for satellite navigation system effectively .Comparing to the traditional anti-jamming method, the method in this article is more practical.