一般的生命訊號偵測系統需要接觸到人體，然而在很多情況下例如要觀測被火燒傷的病人或是新生的嬰兒的時候這種會觸碰的人身上的生命訊號偵測系統就不是那麼適合。在本篇論文中，我們提出了無接觸式的生命偵測系統基於多根傳輸天線多根接收天線 (MIMO) 的雷達。MIMO雷達有很高的自由度與空間上的解析度。時間與空間的適應性處理 (STAP) 技術被應用在MIMO雷達上，用來提升訊號對干擾及雜訊比 (SINR) 。藉由些許的修改，帶有生命訊號模型的MIMO-STAP雷達被建置出來。本篇論文要解決的問題是要從所接收到的訊號中擷取中呼吸與心跳的訊號出來。但通常心跳比呼吸的訊號微弱很多，所以心跳的訊號很難被偵測出來。在本篇論文中，我們提出了幾個方法應用了MIMO雷達的特性和最小變異數無失真反應 (MVDR) 演算法來削弱雜訊進而偵測心跳訊號。模擬的結果表現出應用了本篇提出的方法後的確可以偵測到呼吸與心跳的訊號。這裡使用了均方誤差 (mean-square-error) 來比較不同方法的效果。

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