经阴道彩色多普勒超声（transvagina color Doppler uhrasonography，TVCDS）属腔内超声．探头直接放入阴道内，紧贴阴道穹窿及宫颈，声束经阴道穹窿进入，不需充盈膀胱，不受肥胖影响，避免肠道气体干扰，且盆腔脏器处于近场范围，图...经阴道彩色多普勒超声（transvagina color Doppler uhrasonography，TVCDS）属腔内超声．探头直接放入阴道内，紧贴阴道穹窿及宫颈，声束经阴道穹窿进入，不需充盈膀胱，不受肥胖影响，避免肠道气体干扰，且盆腔脏器处于近场范围，图像清晰，分辨率高，故在妇产科应用越来越广泛。展开更多
A computationally efficient method for jointly estimating both Directions Of Arrival (DOA) and ranges of near field sources is presented. The proposed algorithm does not need any spectral peak searching and the 2-D pa...A computationally efficient method for jointly estimating both Directions Of Arrival (DOA) and ranges of near field sources is presented. The proposed algorithm does not need any spectral peak searching and the 2-D parameters are automatically paired. It is suitable for arbitrary additive Gaussian noise environment. Furthermore, its performances are confirmed by computer simulations.展开更多
文摘经阴道彩色多普勒超声（transvagina color Doppler uhrasonography，TVCDS）属腔内超声．探头直接放入阴道内，紧贴阴道穹窿及宫颈，声束经阴道穹窿进入，不需充盈膀胱，不受肥胖影响，避免肠道气体干扰，且盆腔脏器处于近场范围，图像清晰，分辨率高，故在妇产科应用越来越广泛。
基金Supported in part by Trans-Century Trainning Programme Foundation for the Talents by the State Education Commission and the National Natural Science Foundation of China (No.60172028)
文摘A computationally efficient method for jointly estimating both Directions Of Arrival (DOA) and ranges of near field sources is presented. The proposed algorithm does not need any spectral peak searching and the 2-D parameters are automatically paired. It is suitable for arbitrary additive Gaussian noise environment. Furthermore, its performances are confirmed by computer simulations.
