Multiplexing ion mobility spectrometry with multiple ion injection pulses was used to achieve a high duty cycle and thus improve the signal-to-noise (S/N) ratio while maintaining high resolving power compared with the traditional single-pulse signal averaging method. Historically, an ion mobility spectrum was reconstructed by various multiplexing methods including Fourier transform ion mobility spectrometry (FT-IMS), Hadamard transform ion mobility spectrometry (HT-IMS), and linear frequency modulation correlation ion mobility spectrometry (LFM-CIMS) sequence or Barker code.

中文翻译：

---

几乎完美的序列调制多路复用离子迁移谱

与传统的单脉冲信号平均方法相比，使用具有多个离子注入脉冲的多路复用离子淌度谱来实现高占空比，从而提高信噪比 (S/N)，同时保持较高的分辨能力。历史上，离子迁移谱是通过各种多路复用方法重建的，包括傅里叶变换离子迁移谱 (FT-IMS)、Hadamard 变换离子迁移谱 (HT-IMS) 和线性调频相关离子迁移谱 (LFM-CIMS) 序列或巴克代码。