发明申请
US20100121596A1 METHODS AND SYSTEMS FOR FREQUENCY ESTIMATION FOR ACCELEROMETERS 审中-公开
用于加速度计频率估计的方法和系统

METHODS AND SYSTEMS FOR FREQUENCY ESTIMATION FOR ACCELEROMETERS
摘要:
Methods and systems for improving frequency estimation without increasing digital counter resolution. An example system mixes and filters a known carrier signal with the signal containing the frequency of interest, in order to bring the frequency domain image closer to baseband, and then performs the frequency estimation. This allows much better resolution without the need to increase the counter frequency.
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