本文基于 Ｃｈｅｂｙｓｈｅｖ 映射，提出了一种四相扩频序列的设计方法，分析了此类四相扩频序列的广义奇相关的相关分布，并就相关峰值、相关均方值等相关特性，将此类四相扩频序列与其它四相扩频序列进行了比较分析．理论分析与计算机仿真结果表明：本文设计构造的四相扩频序列，具有优良的相关特性，在 Ｃ Ｄ Ｍ Ａ 系统中具有很好的应用前景． Based on the Chebyshev mapping, this paper presents a design method of four-phase spread spectrum sequence, and analyzes the correlation distribution of generalized odd-order correlation of such four-phase spread spectrum sequences. Based on the related characteristics such as correlation peak value and related mean square value, The four-phase spread spectrum sequence is compared with other four-phase spread spectrum sequences. Theoretical analysis and computer simulation results show that the four-phase spread spectrum sequences designed and constructed in this paper have good correlation characteristics and have good application prospects in C D M A system.