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Spread spectrum communications handbook
1995
ChoiceReviews
Preserved Fulltext
Sequence Receivers
903
2.1 The Delay-Locked Loop
904
2.1.1 Mathematical Loop Model and Equation of
Operation
904
2.1.2 Statistical Characterization of the Equivalent
Additive Noise
909
2.1.3 ...
Jamming
716
2.1.1 Evaluation of Q 2pn/m
719
2.2 Performance of FH/MDPSK in the Presence of Partial-
Band Noise Jamming
728
2.3 Performance of DQASK in the Presence of Additive
White Gaussian Noise ...
doi:10.5860/choice.32-3356
fatcat:22q7rg6iijhgtpg3zdufcn7bh4
Phase stabilization of mode-locked lasers
2005
Journal of Modern Optics
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Finally, we present quantum interference control of injected currents in semiconductors, which provides a solid-state phase detector of the carrier-envelope phase. ...
Using phase-stable lasers it is possible to combine the output of different lasers phase coherently. ...
To perform an out-of-loop measurement of the offset frequency phase noise, we utilize two -to-2 interferometers to implement the self-referencing scheme shown in figure 2 [25] . ...
doi:10.1080/09500340412331303252
fatcat:wy4gc3bcprawlmfsslgtczxb24
Phase stabilization of modelocked lasers
2003
Postconference Digest Quantum Electronics and Laser Science, 2003. QELS.
Preserved Fulltext
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Finally, we present quantum interference control of injected currents in semiconductors, which provides a solid-state phase detector of the carrier-envelope phase. ...
Using phase-stable lasers it is possible to combine the output of different lasers phase coherently. ...
To perform an out-of-loop measurement of the offset frequency phase noise, we utilize two -to-2 interferometers to implement the self-referencing scheme shown in figure 2 [25] . ...
doi:10.1109/qels.2003.238374
fatcat:4dojpin5enctjg5e43xfj2y4pi
Operation of an optically coherent frequency comb outside the metrology lab
2014
Optics Express
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The frequency comb has residual optical linewidths of < 1 Hz, sub-radian residual optical phase noise, and residual pulse-to-pulse timing jitter of 2.4 - 5 fs, when locked to an optical reference. ...
its optical coherence and 5-fs-level timing jitter. ...
Acknowledgments This work was funded by the DARPA PULSE and QuASAR programs and by the National Institute of Standards and Technology (NIST). ...
doi:10.1364/oe.22.006996
pmid:24664048
fatcat:ifrooann7fdcjekspt26jelc3q
Coherent optical CDMA (OCDMA) systems used for high-capacity optical fiber networks-system description, OTDMA comparison, and OCDMA/WDMA networking
2000
Journal of Lightwave Technology
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In this paper, coherent OCDMA systems are introduced, and the issues of the system implementation within high-capacity optical fiber networks are discussed. ...
In the longer term, the advantages of OCDMA in tandem with WDMA (OCDMA/WDMA) networks are compelling and worthy of further investigation in the goal of realising an extensive, flexible, high throughput ...
The performance of a noncoherent code acquisition process in the presence of multiuser interference and optical device noise has been investigated in [39] . ...
doi:10.1109/50.848384
fatcat:bxa5nogonjaqpeqwsa45oari5m
Comb-assisted coherence transfer between laser fields
[article]
2014
arXiv
pre-print
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In fact, it is possible to exploit a partially stabilized optical comb to perform the cloning across a large frequency gap. ...
We realize this long-haul phase transfer by using a fibered Mach-Zehnder single-sideband modulator driven by an appropriate mix of the beat notes of the master and the slave laser with the comb. ...
In the end, such general schemes of comb-mediated coherence transfer rely on a few high speed phase-locked loops to achieve referencing of a CW slave laser to one or two high coherence CW master lasers ...
arXiv:1412.1102v1
fatcat:inkk3o4ln5gnndpvb765fmzc3i
Ranging Precision Analysis Of Lte Signals
2018
Zenodo
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Publication in the conference proceedings of EUSIPCO, Kos island, Greece, 2017 ...
ACKNOWLEDGMENT This work was supported in part by the Office of Naval Research (ONR) under Grant N00014-16-1-2305. ...
CONCLUSION The SSS ranging error in the presence of additive white noise and multipath was analyzed for LTE systems. ...
doi:10.5281/zenodo.1160209
fatcat:5xkdfq5aebck7dvpll3534i4l4
Impact and Detection of GNSS Jammers on Consumer Grade Satellite Navigation Receivers
2016
Proceedings of the IEEE
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This paper describes the main types of Global Navigation Satellite System (GNSS) jammers and reviews their impact on GNSS receivers. ...
| Jamming is the act of intentionally directing powerful electromagnetic waves toward a victim receiver with the ultimate goal of denying its operations. ...
Fig. 5 compares CAFs evaluated in the absence and in the presence of a CW Interference (CWI). ...
doi:10.1109/jproc.2016.2543266
fatcat:6cibnc37rrgs5n7fkq2laz2myi
Sub-Poisson States Heralded at a Hong-Ou-Mandel Interference Peak
[article]
2016
arXiv
pre-print
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This effect was harnessed so a detection on one of the arms could herald the presence of a photon in the other. ...
A peak in coincidence events has been observed in a modified Hong-Ou-Mandel interferometer fed with weak coherent states inside the region of overlapping wave-packets. ...
To perform the experimental verification of the above theoretical predictions, the optical output of a frequency-locked CW semiconductor laser centered at 1551.7 nm was directed to one of the input ports ...
arXiv:1601.08161v2
fatcat:uog3uw7mvbaf3j6t5wf4h6me2m
CW interference mitigation in GNSS receiver based on frequency-locked loop
2016
Science China Information Sciences
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The performance of the algorithm is validated through an analysis of the characteristics of the interference reduction filter and interference estimation precision. ...
This paper proposes a computationally effective algorithm based on a frequency-locked loop (FLL) to mitigate interference in GNSS receivers. ...
Conflict of interest The authors declare that they have no conflict of interest. ...
doi:10.1007/s11432-015-0763-9
fatcat:mazrdfrkhfepjeesnrjmhqgvyi
Phase locking of multiple optical fiber channels for a slow-light-enabled laser radar system
2013
Optics Express
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Here we describe in detail the optical phase locking system used in the design. ...
We have recently demonstrated a design for a multi-aperture, coherently combined, synchronized-and phased-array slow light laser radar (SLIDAR) that is capable of scanning in two dimensions with dynamic ...
We also wish to acknowledge Corning, Inc. for its loan of the DCF module, E. Watson and L. Barnes for their loan of the infrared camera used to record Fig. 6 , and G. Gehring, Y. Song, E. ...
doi:10.1364/oe.21.013094
pmid:23736563
fatcat:v7v34twhira27emgvfaiu6ivju
Analysis of Multi-Antenna GNSS Receiver Performance under Jamming Attacks
2016
Sensors
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In addition, code phase measurement biases due to the phase delay and group delay of antenna elements were observed. ...
In the tracking domain, the carrier Doppler, Phase Lock Indicator (PLI), and Carrier-to-Noise Ratio (C/N 0 ) are analyzed. ...
In addition, code phase measurement biases due to the phase delay and group delay of antenna elements were observed. ...
doi:10.3390/s16111937
pmid:27869672
pmcid:PMC5134596
fatcat:byrplzplave23leyyw2joxlcju
A versatile ultrastable platform for optical multidimensional Fourier-transform spectroscopy
2009
Review of Scientific Instruments
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This arrangement is ideal for performing coherent optical experiments, such as multidimensional Fourier-transform spectroscopy, which records the phase of the nonlinear signal as a function of the time ...
delay between several of the excitation pulses. ...
This work was supported by the National Science Foundation and the Chemical Sciences, Geosciences, and Biosciences Division Office of Basic Energy Sciences, U.S. Department of Energy. ...
doi:10.1063/1.3184103
pmid:19655944
fatcat:2a7xque3zbfx5iqlj3tixsv5ri
The Impact of Interference on GNSS Receiver Observables – A Running Digital Sum Based Simple Jammer Detector
2014
Radioengineering
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The investigated observables include the Automatic Gain Control (AGC) measurements, the digitized IF (Intermediate Frequency) signal levels, the Delay Locked Loop and the Phase Locked Loop discriminator ...
variances, and the Carrier-to-noise density ratio (C/N0) measurements. ...
of the Finnish Ministry of Defense and the Finnish Geodetic Institute, Finland. ...
doaj:94e0b0bd56584050b920386956ce74f9
fatcat:bsjqqrh74rdlfgdbjmz7a5avxy
Intra-Cavity Frequency-Doubled VECSEL System for Narrow Linewidth Rydberg EIT Spectroscopy
[article]
2022
arXiv
pre-print
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Here, we characterize the frequency stability of an intra-cavity frequency-doubled VECSEL with 690 mW of output power at 475 nm using the delayed self-heterodyne technique and direct comparison with a ...
They offer high power, low phase noise, wide frequency tunability, and excellent beam quality in a simple and inexpensive system architecture. ...
The authors thank James Cahill for use of the fiber delay-line spools, and Fredrik Fatemi for thoughtful discussion. J. ...
arXiv:2206.00096v3
fatcat:t4ee5eqrebezpjmlwx5k7ijeva
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