發送短信

數:

提供者:

CAPTCHA:

            ______   _____      _____     _____   
  ____     /_   _// |  __ \\   |  ___||  / ____|| 
 |    \\    -| ||-  | |  \ ||  | ||__   / //---`' 
 | [] ||    _| ||_  | |__/ ||  | ||__   \ \\___   
 |  __//   /_____// |_____//   |_____||  \_____|| 
 |_|`-`    `-----`   -----`    `-----`    `----`  
 `-`

Please enter what you see:

發送短信 : Performance analysis of familiar elevation-dependent stochastic models with error variance compensation and posteriori unit weight in GPS/BDS precise point positioning