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Thursday, July 30, 2020 | History

1 edition of Digital Analysis of the Delay- Lock Discriminator found in the catalog.

Digital Analysis of the Delay- Lock Discriminator

by Charles S. Mulloy

  • 144 Want to read
  • 7 Currently reading

Published by Naval Postgraduate School, Available from National Technical Information Service in Monterey, Calif, Springfield, Va .
Written in English


ID Numbers
Open LibraryOL25181471M

  The discriminator is noncoherent in the sense that the bit information is removed by using a nonlinear operation. By jointly using such a discriminator and noncoherent integrations at the delay lock loop level, a fully noncoherent architecture, able to operate at low carrier-power-to-noise density ratio (C/N 0), is by:   I am just wondering if there are any books that people would recommend that provide a mid level discussion and explanaton of delay analysis and the techniques involved. It would be very useful if any of these books also contained a relatively detailed explanation of the steps to be followed for each delay analysis method.

A new paper called, Music Downloads and the Flip Side of Digital Rights Management, suggests that when it comes to piracy, digital locks don't always work as intended: "Our analysis suggests that. Enter your mobile number or email address below and we'll send you a link to download the free Kindle App. Then you can start reading Kindle books on your smartphone, tablet, or computer - Format: Paperback.

Fig. Test setup with a Frequency discriminator The measurement method relies on the availability of a frequency discriminator that fit´s to the RF frequency and bandwidth of the device under test. Measurement with signal analyzers As a simple way around the availability of a discriminator. Digital delay locked loops also have time-todigital conversion properties and can be used in monitoring and sensing applications. While DLLs can be designed with digital-only methods, their design involves direct manipulation of clock signals. Therefore, additional techniques are involved as opposed to standard custom digital datapath by: 2.


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Digital Analysis of the Delay- Lock Discriminator by Charles S. Mulloy Download PDF EPUB FB2

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Open : corporatingfeedback,andattemptstocorrelatethedelayofthereturn signalwithanestimate ofthe delaygenerated in Delay-Lock is mathematicallydescribed by a second-ordernon-linear. Enter the password to open this PDF file: Cancel OK.

File name:. Abstract: The delay-lock discriminator described in this paper is a statistically optimum device for the measurement of the delay between two correlated waveforms. This new device seems to have important potential in tracking targets and measuring distance, depth, or altitude.

This correspondence deals with the effect of multiple signals on the control voltage of the delay-lock discriminator (tracker). Given n returned signals with known delay and power, a formula for the tracker estimate is by: 1.

on the delay-lock discriminator, an optimum radar detector. Much of the work of this thesis was of a practical natureo A working model of the radar tracker was constructed~ Not havi~g a transmitter 6 ante~na, nor a suitable target, it was necessary to simulate these elements.

Therefore the words. Utilization of the delay-lock discriminator can lead to substantial simplification as compared to tracking systems relying exclusively on phase-lock loops.

Such improvements result because the delay-lock loop is free of the ambiguities inherent in phase-lock measurements. Code phase discriminator is the important part of the delay-locked loop, so its performance affects the pseudo-code tracking precision of receiver directly.

The receiver must then shift the phase of the replica code until it fully correlates with the SV C/A code. This operation is executed by the receiver delay lock loop (DLL). The DLL reaches the maximum correlation between the incoming SV code and the local replica code during the tracking phase by using an early–late by: LECTURE – ALL DIGITAL PHASE LOCK LOOPS (ADPLL) (Reference [2]) Outline • Building Blocks of the ADPLL • The signal are digital (binary) and may be a single digital signal or a combination of parallel digital signals.

In lock, the average number of File Size: KB. “This is a well-researched and thought provoking analysis of the legacy and complexity of racism that has broad implications for American politics and social policies.” -Vanessa Bush, Booklist "A tremendously important examination of the racial disparity in achievement in America; one that tests the reflexive assumptions of both liberals Cited by: served by this advice when it comes to the difficult subject of delay analysis.

Project scheduling (programming) in general, and delay analysis in particular, suffers from its own particular technical jargon, with terms such as ‘critical path’, ‘free float’, ‘logic links’ and ‘concurrent delay File Size: KB.

Analysis is not valid far from lock – e.g. during acquisition at startup Continuous time assumption – PLL/DLL is really a discrete time system • Updates once per cycle – If the bandwidth analysis of File Size: KB.

M.H. Perrott 2 Why Are Digital Phase-Locked Loops Interesting. Performance is important-Phase noise can limit wireless transceiver performance-Jitter can be a problem for digital processors The standard analog PLL implementation is problematic in many applications-Analog building blocks on a mostly digital chip pose - design and verification challengesFile Size: 3MB.

From Wikipedia, the free encyclopedia. Jump to navigation Jump to search. In electronics, a delay-locked loop (DLL) is a digital circuit similar to a phase-locked loop (PLL), with the main difference being the absence of an internal voltage-controlled oscillator, replaced by a delay line.

A DLL can be used to change the phase of a clock signal (a signal with a periodic waveform), usually to enhance. Delay-locked loops (DLLs) can be considered as feedback circuits that phase lock an output to an input without the use of an oscillator.

In some applications, DLLs are necessary or preferable over phase-locked loops (PLLs), with their advantages including lower sensitivity to supply noise and lower phase noise. This article deals with fundamental DLL design concepts.

Abstract The first-order probability density at the output of the correlation network of the delay-lock discriminator is determined using the methods developed by Arthur, Kac, and Siegert. The analysis assumes that the input signal is stationary and Gaussian and that the discriminator is locked : Abraham Boyarsky, S.

Rauch. digital delay-locked loop (DLL) that uses a lock-in pre-search (LPS) algorithm is presented for DDR3 and DDR4 SDRAMs.

By adopting a new LPS algorithm that changes the propagation delay of the course delay line (CDL) with five delay steps, the DLL is able to find the approximate locking point before the normal operation.

The DLL then performs aFile Size: 1MB. The “Travis” discriminator, shown in Fig. II, consists of two circuits tuned to frequencies displaced with respect to one Fig.

IIb are plotted the selectivity curves (A) and (B) corresponding to circuits (A) and (B) of Fig. output voltage is the algebraic sum of the two circuit voltages, that is, the arithmetic difference between the voltages across (A) and (B).

A 45nm CMOS, Low Jitter, All-Digital Delay Locked Loop with a Circuit to Dynamically Vary Phase to Achieve Fast Lock A Thesis Presented by Soumya Shivakumar Begur to The Department of Electrical and Computer Engineering in partial ful llment of the requirements for the degree of Master of Science in Electrical and Computer Engineering.

Selections of suitable precorrelation filter bandwidth in conjunction with the early-late correlator spacing can aid in mitigating the multipath impeding effects on delay lock loop (DLL) and receiver discriminators. Computer simulations of the impact of a dominant multipath on the discriminator tracking performance are by: 2.In this paper, we examine the effect of impulsive noise on GPS delay lock loops (DLL).

We consider the DLL for the GPS Coarse Acquisition code (C/A), which is used in civilian applications, but also needed in military GPS receivers to perform signal acquisition and by: 3.Detail analysis of this setup has been reported in [6] by assuming the delay-line as the discriminator element.

Then, the final calculated voltage (resulted from Equation (16) of [6]) and the.