Chirp signal is a kind of pulse - compressed signal with large time - bandwidth products achieved through linear frequency modulation . it has high resolution in range because of its great bandwidth 線性調(diào)頻信號是通過線性頻率調(diào)制獲得大的時寬帶寬積的一種脈沖壓縮信號,具有大的帶寬,因此有高的距離分辨力。
This dissertation aims at weak signal detection technology in micro - mechanical gyros , and digital correlated demodulation which can improve signal detecting accuracy is simulated ; methods of compressing signal band width to improve signal - to - noise ratio and analyzing error production to decrease system error are researched 針對石英音叉微陀螺的微弱信號檢測技術(shù),本文通過仿真表明:利用數(shù)字相關(guān)解調(diào)方法提取陀螺信號可以很好地提高檢測精度。