Results 21 to 30 of about 1,748 (212)

Precision Imaging of Frequency Stepped SAR with Frequency Domain Extracted HRRP and Fast Factorized Back Projection Algorithm [PDF]

open access: yesInternational Journal of Antennas and Propagation, 2017
Novel frequency domain extracted method (FDEM) to obtain high range resolution profile (HRRP) for frequency stepped synthetic aperture radar (SAR) is proposed in this paper, and the mathematical principle and formulas of this new HRRP obtaining idea ...
Can-bin Yin, Da Ran
doaj   +2 more sources

Target recognition algorithm based on HRRP time-spectrogram feature and multi-scale asymmetric convolutional neural network [PDF]

open access: yes, 2023
A radar HRRP recognition algorithm based on time-spectrogram feature and multi-scale convolutional neural network is proposed to address the difficult feature extraction and low accuracy in space target recognition.
PAN Quan, XU Rong, YUN Tao, HAO Yuhang
core   +3 more sources

Pulse radar randomly interrupted transmitting and receiving optimization based on genetic algorithm in radio frequency simulation

open access: yesEURASIP Journal on Advances in Signal Processing, 2021
The interrupted transmitting and receiving (ITR) can be used in anechoic chamber to solve the coupling between the transmitted and reflected signals. When the ITR periods are random, the fake peaks in high-resolution range profile (HRRP) of ITR echo can ...
Xiaobin Liu   +3 more
doaj   +1 more source

Time-Frequency Analysis and Target Recognition of HRRP Based on CN-LSGAN, STFT, and CNN [PDF]

open access: yes, 2021
Aiming at the problem of radar target recognition of High-Resolution Range Profile (HRRP) under low signal-to-noise ratio conditions, a recognition method based on the Constrained Naive Least-Squares Generative Adversarial Network (CN-LSGAN), Short-time ...
Jianghua Nie   +3 more
core   +1 more source

Interventions to reduce readmissions after pneumonia hospitalization: A systematic review and meta-analysis. [PDF]

open access: yesJ Hosp Med
Abstract Background Preventable hospital readmissions, reflecting suboptimal healthcare quality and increased costs, highlight the need for evidence to shape healthcare delivery. Objectives This systematic review assesses interventions to reduce readmissions following pneumonia‐related hospitalizations. Methods PubMed, Cochrane Library, and CINAHL were
Phillips SA, Sill JD, Qayyum R.
europepmc   +2 more sources

A New Method for Moving-Target HRRP via Double Step Frequency Verified by Simulation [PDF]

open access: yes, 2022
The stepped-frequency (SF) waveform is highly sensitive to the target motion, which induces range shift and echo spread in a high-range-resolution profile (HRRP).
Shu, Feng   +7 more
core   +1 more source

Impact of Race/Ethnicity and Socioeconomic Status on Risk-Adjusted Readmission Rates [PDF]

open access: yesInquiry: The Journal of Health Care Organization, Provision, and Financing, 2016
Under the Hospital Readmissions Reduction Program (HRRP) of the Centers for Medicare & Medicaid Services (CMS), hospitals with excess readmissions for select conditions and procedures are penalized.
Grant R. Martsolf PhD   +6 more
doaj   +1 more source

Intelligent radar HRRP target recognition based on CNN-BERT model

open access: yesEURASIP Journal on Advances in Signal Processing, 2022
Stable and reliable feature extraction is crucial for radar high-resolution range profile (HRRP) target recognition. Owing to the complex structure of HRRP data, existing feature extraction methods fail to achieve satisfactory performance.
Penghui Wang   +4 more
doaj   +1 more source

Triple Aim and the Hospital Readmission Reduction Program

open access: yesHealth Services Research & Managerial Epidemiology, 2021
Objectives: Despite substantial attention on hospital readmission rates, the impact of the Hospital Readmission Reduction Program (HRRP) on a comprehensive set of Triple Aim goals has not been studied: improve hospital quality, reduce cost, and improve ...
Sezgin Ayabakan   +2 more
doaj   +1 more source

Multi-Source HRRP Target Fusion Recognition Based on Time-Step Correlation [PDF]

open access: yes, 2023
Aiming at the limitations of a single High Resolution Range Profile (HRRP) in recognition, this paper proposes a Time step Correlation-based Feature Fusion (TCFF) method.
Zhibin Yue, Lu Wan, Jianbin Lu
core   +1 more source

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