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  ____      ______    _____      ___      ______  
 |  _ \\   /_   _//  /  ___||   / _ \\   /_   _// 
 | |_| ||   -| ||-  | // __    | / \ ||  `-| |,-  
 | .  //    _| ||_  | \\_\ ||  | \_/ ||    | ||   
 |_|\_\\   /_____//  \____//    \___//     |_||   
 `-` --`   `-----`    `---`     `---`      `-`'

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發送短信 : A lower bound of DOA-estimates by an array randomly subject to sensor-breakdown