Results 81 to 90 of about 1,803 (190)
Statistical Analysis of Performance of Optimisation‐Based SAR Autofocus
IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.Transionospheric SAR autofocus is a variational algorithm designed to overcome the limitations of conventional autofocus methods in correcting ionospheric distortions in spaceborne SAR images. This study provides a systematic statistical analysis of its robustness, examining the effects of turbulence, clutter, and noise on performance.
Patrick Haughey +2 more
wiley +1 more source
Random Stepped Frequency ISAR 2D Joint Imaging and Autofocusing by Using 2D-AFCIFSBL
Remote SensingWith the increasingly complex electromagnetic environment faced by radar, random stepped frequency (RSF) has garnered widespread attention owing to its remarkable Electronic Counter-Countermeasure (ECCM) characteristic, and it has been universally ...
Yiding Wang +3 more
doaj +1 more source
Three dimensional scattering center imaging techniques [PDF]
Two methods to image scattering centers in 3-D are presented. The first method uses 2-D images generated from Inverse Synthetic Aperture Radar (ISAR) measurements taken by two vertically offset antennas.
Burnside, W. D., Younger, P. R.
core +1 more source
Using Polynomial Wigner-Ville Distribution for Velocity Estimation in Remote Toll Applications [PDF]
, 2014 International audienceThis letter presents the use of polynomial Wigner- Ville distribution (PWVD) for accurate velocity estimation as used in remote road traffic management applications.
Meric, Stéphane, Pancot, Rébecca
core +2 more sources
Pareto‐Optimized Mobile‐Sink Routing for Energy‐Efficient Wireless Sensor Networks
International Journal of Energy Research, Volume 2025, Issue 1, 2025.Wireless sensor networks (WSNs) are inherently constrained by limited battery resources, making the design of energy‐efficient communication protocols critical for extending network lifetime. Cluster‐based routing, enhanced through optimization algorithms, has emerged as a promising solution to balance energy consumption and improve scalability.
Ayman A. Alharbi +3 more
wiley +1 more source
Resolution and Micro-Doppler Effect in Bi-ISAR System (in English)
Leida xuebao, 2013 Compared to the monostatic radar, bistatic radar has many special characteristics because of its spatial complexity. Bistatic Inverse Synthetic Aperture Radar (Bi-ISAR) can be employed as a radar imaging tool for obtaining non-cooperative target images ...
Deng Dong-hu +4 more
doaj +1 more source
Chip-based photonic radar for high-resolution imaging
, 2019 Radar is the only sensor that can realize target imaging at all time and all weather, which would be a key technical enabler for future intelligent society.
Cong, Rong +8 more
core
An augmented Lagrangian method for autofocused compressed SAR imaging [PDF]
, 2015 We present an autofocus algorithm for Compressed SAR Imaging. The technique estimates and corrects for 1-D phase errors in the phase history domain, based on prior knowledge that the reflectivity field is sparse, as in the case of strong scatterers ...
Cetin, Mujdat +5 more
core +1 more source
Improved Scattering Center Extraction From ISAR Data Using Simplex Optimization
International Journal of Antennas and Propagation, Volume 2025, Issue 1, 2025.Inverse synthetic‐aperture radar (ISAR) techniques have started to play a key role in calculating the radar cross‐section (RCS) values of objects from near‐field measurements. It is assumed that the scene (or the scatterer) is composed of scattering centers (SCs) whose locations and complex amplitudes are found from the ISAR data.
Bahar Ugurdogan +2 more
wiley +1 more source
An Adversarial Super-Resolution Remedy for Radar Design Trade-offs
, 2019 Radar is of vital importance in many fields, such as autonomous driving, safety and surveillance applications. However, it suffers from stringent constraints on its design parametrization leading to multiple trade-offs. For example, the bandwidth in FMCW
armanious +8 more
core +1 more source