The position encoding and timing characteristics of a large wedge and strip anode ( WSA) position sensitive detector were compared with other types of position sensitive detectors to improve the efficiency of the electron momentum spectroscope. 为提高电子动量谱仪的效率,研究了大面积楔条型阳极位置灵敏探测器的位置成像和时间特性,并和其他类型的位置灵敏探测器进行了比较。