This brief develops a disturbance observer-based repetitive control system using non-minimal state-space (NMSS) realization where all state variables correspond to the system’s input and output past values. Tracking periodic reference signal or rejection of is achieved by including observer estimate an containing same frequency characteristics. new approach differs from previously published des...

Abstract A novel device-free target tracking and following method is proposed based on both the received signal strength (RSS) channel state information (CSI) of WiFi signals. Different from typical method, we consider a scenario where under followed by device that transmits reference signals for location itself. To meet goal, deep spatial-temporal neural network model designed to learn exploit...

Weak GPS signal tracking is studied in this paper. To utilize the spatial correlation of the GPS signal among local receivers, a collaborative signal tracking structure is proposed. More specifically, the GPS signal parameter, carrier Doppler from a nearby receiver is provided to the target receiver as reference. An open-loop batch processing technique is used in this study, mainly to take adva...

In multimodal documents, different types of cohesive or cross-reference link (i.e., signaling) are used in the text to link verbally coded content with the graphical material. In this study, we identify three types of reference, within the framework of previous work on cohesion (Halliday & Hasan, 1976): directive signaling, descriptive signaling, and no signaling in the text to introduce the fi...

Current parallel imaging techniques for accelerated imaging require a fully encoded reference data set to estimate the spatial coil sensitivity information needed for reconstruction. In dynamic parallel imaging a time-interleaved acquisition scheme can be used, which eliminates the need for separately acquiring additional reference data, since the signal from directly adjacent time frames can b...

Repetitive control (RC) scheme presents an attractive solution to achieve excellent steady-state tracking error and low total harmonic distortion (THD) for periodic signals. RC can produce extremely large gains at fundamental and each harmonic frequency of reference signal to achieve all harmonics suppression. However, a DC-AC inverter always has uneven THD distribution, e.g. THD concentrates a...

With their huge bandwidth and correspondingly abundant channel diversity and fine tim-ing resolution, ultra-wideband (UWB) systems have proved able to provide higher com-munication capacity and better ranging accuracy than other narrowband systems. How-ever, to achieve this, accurate channel estimation and synchronization must be obtained,and efficient diversity combining algori...

Position control of Shape Memory Alloy (SMA) actuators has been a challenging topic during the last years due to their nonlinearities in the governing physical equations as well as their hysteresis behaviors. Using the inverse of phenomenological hysteresis model in order to compensate the input–output hysteresis behavior of these actuators shows the effectiveness of this approach. In this pape...