نتایج جستجو برای: open loop tracking
تعداد نتایج: 620089 فیلتر نتایج به سال:
Bit synchronization in the presence of asymmetric channel noise has not appeared in the open literature. It is the purpose of this paper to study the performance of a popular digital clock synchronizer, the Digital Data Transition Tracking Loop (DTTL), in the presence of asymmetric noise. A comparison of the DTTL and Cross Spectrum Synchronization Loop (CSSL) is also provided for special parame...
A time-domain algorithm is proposed to control interval plants described by impulse response functions. The closed-loop control actions are determined based on the interval ranges of the model parameters. Robust steadystate performance in tracking a given set-point can be guaranteed if the sign of the static gain is certain despite possible open-loop overshooting, delay, and nonminimum phase of...
The robust carrier tracking is defined as the ability of a receiver to determine the phase and frequency of the input carrier signal in unusual conditions such as signal loss, input signal fading, high receiver dynamic, or other destructive effects of propagation. An implementation of tight tracking can be understood in terms of adopting a very narrow loop bandwidth that contradict with the req...
This paper describes the design and implementation of near-minimum-time control laws for the Advance Space Structures Technology Research Experiments test article located at the Phillips Laboratory, Edwards Air Force Base. The test article is equipped with compressed air thrusters that can be throttled. The mathematical model of the rotational motion is obtained by using experimental data and i...
Global Positioning System (GPS) spoofing could pose a major threat for GPS navigation ‎systems, so the GPS users have to gain a better understanding of the broader implications of ‎GPS.‎ In this paper, a plenary anti-spoofing approach based on correlation is proposed to distinguish spoofing effects. The suggested ‎method can be easily implemented in tracking loop of GPS receiver...
A phase-locked loop (PLL) and delay-locked loop (DLL) design with adaptively adjusting bandwidth enables optimal performance over a wide frequency range and across process, voltage, and temperature variations. A design methodology of such adaptive-bandwidth PLLs and DLLs is described. To assess the impact of each circuit parameter directly, we derive a discrete-time, open-loop dynamic model of ...
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