Cover of: An Investigation of the Narrow-Band and Wideband Ambiguity Functions For Complementary Codes | Richard Mitsuo Akita

An Investigation of the Narrow-Band and Wideband Ambiguity Functions For Complementary Codes

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Naval Postgraduate School, Available from National Technical Information Service , Monterey, Calif, Springfield, Va
ContributionsNaval Postgraduate School (U.S.)
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Open LibraryOL25208392M

ST—— UNCLASSIFIED ANINVESTIGATIONOFTIE NARROW-BANDANDWIDEBAND AMBIGUITYFUNCTIONSFORCOMPLEMENTARYCODES by Richard.'litsuoAkita Lieutenant,UnitedStatesNavy B.S Enter the password to open this PDF file: Cancel OK.

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By Richard Mitsuo Akita. Download PDF (5 MB) Abstract. A complementary code pair has the property that its autocorrelation function contains no range sidelobes. Feasibility Analysis. In this section, characteristics of auto- and cross-correlation of the CCC and complementary codes are studied.

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Figure 3 a shows the autocorrelation functions of two sets of non-orthogonal bit complementary code and two subsets of a {4, 4, 16} complete complementary code.

It can be noted from Figure 3 a that the autocorrelation coefficients are zero except zero A wrong fix could completely spoil the solution, and a % fix was needed for RMSE mixed to be on CRB real/integer. However, notice that compared to L2 + L5, E5B + E6, E5A + E6, or B2A + B3 This is the first book to discuss current and future applications of waveform diversity and design in subjects such as radar and sonar, communications systems, passive sensing, and many other technologies.

Waveform diversity allows researchers and system designers to 1 day ago  Ocis codes: digital image processing, image analysis, image enhancement, wavelets, multispectral. To overcome this, multispectral imaging systems have been developed to combine images acquired at a number (usually 10) of narrow wave-bands, sensitive to features of interest on the :// 2 days ago  Wideband Code Division Multiple Access - WCDMA Definition and 1 day ago  Mimo Radar Waveform Design for Spectrum Sharing with Cellular Systems A MATLAB Based Approachu/ 1 day ago  Reflectarray Antennas Theory, Designs, and Applications   An alternative way to represent the acoustic output of the source is by stating the received level at a specified range.

Using this approach, the SEL values obtained from measurements for a distance of m are typically in the range – dB re 1 μPa 2 s, whereas the peak-to-peak acoustic pressure levels measured at this distance are in the range – dB re 1 μPa (10–18 kPa).

Lin, Z.

Description An Investigation of the Narrow-Band and Wideband Ambiguity Functions For Complementary Codes FB2

[], ‘ Wideband ambiguity function of broadband signals ’, Acoustical Society of America 83 (6), – Lindenfeld, M. [ ], ‘ Sparse frequency transmit and receive waveform design ’, IEEE Transactions on Aerospace and Electronic Systems 40 (3). millimeter wave range and narrow-band step-frequency continuous-wave (SFCW) signals [].

This This article proposes a method for joint estimation of range and velocity in radars using ultra-wideband 2 days ago  The inherent advantages and potential benefits of the terahertz (thz) phenomenon, potential that encompasses various aspects such as thz sensing, imaging and material properties investigation with thz radiation for defense (military) and security applications serve as an important stimulus for the interest in emerging thz science and technology In narrow-band signals, frequency changes linearly for complete duration of pulse.

We change the center frequency of each LFM pulse by introducing a frequency step between consecutive :// Niu et al. presented a wavelet-based wideband cross ambiguity function (WB-WBCAF) method to estimate the time delay and Doppler stretch between two Ultra-wideband radar and random signal radar are two types of newly-developed radar systems.

This paper introduces the special advantages of the combination of ultra-wideband technology and random   A counterexample of McKinnon gives a family of strictly convex functions in two dimensions and a set of initial conditions for which the Nelder--Mead algorithm converges to a nonminimizer.

It is not yet known whether the Nelder--Mead method can be proved to converge to a minimizer for a more specialized class of convex functions in two :// The 4th International Conference on Electronic, Communications and Networks (CECNet) inherits the fruitfulness of the past three conferences and lays a foundation for the forthcoming next year in Shanghai.

CECNet was hosted by Hubei University of /Hussain-Ivanovic/p/book/ Reyes-Ayala M, Cruz-Puebla J, Pérez-López G, Andrade-Gonzalez E and Tirado-Méndez J Comparison of linear microwave antenna arrays for fixed communication systems Proceedings of the international conference on applied, numerical and computational mathematics, and Proceedings of the international conference on Computers, digital communications and computing, ()   Radar is a detection system that uses radio waves to determine the range, angle, or velocity of objects.

It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain.A radar system consists of a transmitter producing electromagnetic waves in the radio or microwaves domain, a transmitting antenna, a receiving antenna (often the same Engineering Flat Gain Tunable Raman-Parametric Hybrid L-Band Amplifier for Narrow Band Multi-Channel Terabits System.

Gaganpreet Kaur. Journal of Optical Communication. Performance Investigation of Raman-Parametric Hybrid for Broadband Amplification in L-band. Gaganpreet Kaur, Gurmeet Kaur and Sanjay However, its practical application was mostly restricted to narrow-band sensors or it was banned to the laboratory in the case of wideband examinations.

The reason for this limitation has been the lack of reasonable wideband measurement equipment. The first field deployable ultra wideband devices were used in ground-penetrating radar (GPR). The value of s is close to 1 and can be approximated to 1 in the argument of the complex envelope (but not in the expression of ν) only if the so called narrow-band condition [39, Sec.

], [62, pp. –, –] (59) B T ≪ c / | v r | is satisfied, where B is the transmitted bandwidth and T the data-record :// Techniques, systems, and devices are disclosed for ultrasound imaging using spread spectrum, coherent, frequency- and/or phase-coded waveforms.

In one aspect, a method of creating an image from an acoustic waveform in an acoustic imaging device includes setting the device into a transmit mode to transmit an acoustic waveform toward a target, in transmitting the acoustic waveform, synthesizing Engineering Flat Gain Tunable Raman-Parametric Hybrid L-Band Amplifier for Narrow Band Multi-Channel Terabits System.

Gaganpreet Kaur. Journal of Optical Communication. SCI. Performance Investigation of Raman-Parametric Hybrid for Broadband Amplification in L-band. Gaganpreet Kaur, Gurmeet Kaur and Sanjay   Barker codes are one class of the famous classes of codes used in the biphase coding of the radar signal with the purpose of pulse compression.

Those codes are characterized with very small PSL values and particular autocorrelation functions that have side lobes with equal amplitudes and unity absolute value, similar to that shown in Figure :// The output electrical signal has a very-narrow band with respect to the input one, and the frequency selection is operated by the mechanical characteristics of the MEMS resonator.

Such a very-selective filtering function is critical for devices like oscillators, which are meant to generate a reference (RF) frequency with pronounced stability   May - IEEE Communications Magazine IEEE 5 dBm 1 t I Received Signal Sub-band n fc,n %n+ 1 -6 0 (a) FDM filtering Received Noise per Sub-band n \ I (b) Overlapping SQAM spectra I ’ L fkHz 50 n I 10 l.O 20 30 40 (a) Received signal and noise power.

( › 百度文库 › 互联网. Microwave imaging using ultra-wideband noise waveforms for nondestructive testing of multilayer structures Marc D. Navagato, Ram M. Narayanan Proc. SPIERadar Sensor Technology XXII, (4 May ); doi: /. Climate change brings new challenges for traditional environmental risk management, particularly for major infrastructure projects, where the decisions made today can have long-term implications.

A major challenge is that projections of future climate are deeply uncertain. If this uncertainty is not managed appropriately, long-lived infrastructure may need to be replaced or expensively   The band-pass RRC pulse with τ g = ns bears an enlarged intermediate region between 12 dB and 30 dB.

This depends on the presence of the carrier that produces additional ambiguity on the autocorrelation function of the received signal with respect to the baseband ://Monolayer MoS 2 (1L-MoS 2) has a direct band gap (while bulk 2H-MoS 2 has indirect band gap ) that allows optical applications and, when used in a lateral FETs, I ON /I OFF up to 10 8.

This material has excellent electrostatic integrity that allows flexible electronics, and may enable times less power consumption in