Results 71 to 80 of about 547 (145)

Two-phase Optimization of Binary Sequences with Low Peak Sidelobe Level Value

open access: yes, 2021
The search for binary sequences with low peak sidelobe level value represents a formidable computational problem. To locate better sequences for this problem, we designed a stochastic algorithm that uses two fitness functions. In these fitness functions,
Bošković, Borko, Brest, Janez
core  

Target Detection Using Fused Unidentical Photonics-Based LFM Sub-Band Radar Signals With an Adaptive Feed Forward Network Equalizer

open access: yesIEEE Access
To address the challenges of costly frontend high frequency opto-electronics devices and the requirement of high bandwidth for improved range, resolution several band fusion techniques are proposed in this work.
Bikash Nakarmi   +8 more
doaj   +1 more source

Chaotic Phase-Coded Waveforms with Space-Time Complementary Coding for MIMO Radar Applications [PDF]

open access: yes, 2018
A framework for designing orthogonal chaotic phase-coded waveforms with space-time complementary coding (STCC) is proposed for multiple-input multiple-output (MIMO) radar applications.
Hong, Sheng   +5 more
core   +2 more sources

SAR antenna calibration techniques [PDF]

open access: yes
Calibration of SAR antennas requires a measurement of gain, elevation and azimuth pattern shape, boresight error, cross-polarization levels, and phase vs. angle and frequency. For spaceborne SAR antennas of SEASAT size operating at C-band or higher, some
Carver, K. R., Newell, A. C.
core   +1 more source

PULSE COMPRESSION IN SEARCH RADAR [PDF]

open access: yes, 1998
Pulse compression is a vvidely used method to maintain the range resolution ot radar while increasing the average power per pulse that can be placed on a target.
SELLER, Rudolf, TÖRÖK, Imre
core   +1 more source

Development of Variable Slope Piecewise-Based Brown Symbols for Application to Nonlinear Ambiguity Suppression [PDF]

open access: yes, 2003
In 1962, Palermo used two conjugate Linear Frequency Modulated (LFM) pulses to demonstrate a Non-linear Ambiguity Suppression (NLAS) technique to reduce ambiguous energy in radar returns. Using conjugate LFM pulse coding does not readily extend to larger
Kurian, John
core   +1 more source

Shuttle orbiter Ku-band radar/communications system design evaluation [PDF]

open access: yes
Tasks performed in an examination and critique of a Ku-band radar communications system for the shuttle orbiter are reported. Topics cover: (1) Ku-band high gain antenna/widebeam horn design evaluation; (2) evaluation of the Ku-band SPA and EA-1 LRU ...
Broad, P.   +7 more
core   +1 more source

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