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所属单位：自动化学院

发表刊物：Zhongguo Jixie Gongcheng

摘要：Based on the pulse amplitude and pulse position coding, a phase stepping pulse position coding scheme was designed, and the time slots and phases were extracted by digital quadrature demodulation method. The coding capacity is close to 3 million, which may meet the needs of most applications.The relationships between echo amplitudes and reflectivity of reflectors of single-channel and dual-channel SAW tags were compared through theoretical derivation and simulation analyses.The results show that for the two type of tags with the same number of reflective gratings, the dual-channel tags may select a higher reflectivity of the reflective grating, thus having a farther recognition distance.The corresponding SAW tags were actually fabricated and tested.The test results verify the large-capacity and long-distance characteristics of the dual-channel tags with phase stepping pulse position coding. © 2019, China Mechanical Engineering Magazine Office. All right reserved.

ISSN号：1004-132X

是否译文：否

发表时间：2019-08-25

合写作者：贾浩,徐海林,李亚飞

通讯作者：陈智军