For decades, high-frequency (HF) radar has played an important role in sensing the Earth's environment. Advances in radar technology are providing opportunities to significantly improve the performance of HF radar, and to introduce more applications. This paper presents a low-power, small-size, and multifunctional HF radar developed by the Ionospheric Laboratory of Wuhan University, referred to...

The Mars Science Laboratory landing radar underwent testing where the radar was attached to a helicopter with a rover mockup suspended underneath. The rover mockups position was varied while the radar was operating in order to test how the position of the rover affects the radar return. Knowledge of the rover mockup position at each time instant is crucial in determining what effects may be pre...

source localization is an essential part of array signal processing including radar, sonar, seismology and oceanography applications. the performance of the presented source localization methods are degraded substantially in practical situations. one of the conditions which decreases the performance o

Synthetic Aperture Radar (SAR) imaging is an expensive endeavor. It can be difficult for universities, small business, or individuals to experiment with SAR imaging and algorithm development on a low budget. For this reason, a uniquely inexpensive solution to FrequencyModulated Continuous-Wave (FMCW) radar was developed and then utilized as an ultra low cost SAR imaging system. This unique appr...

Radar offers advantages as a robotic perception modality because it is not as vulnerable to the vacuum, dust, fog, rain, snow and light conditions found in construction, mining, agricultural and planetary-exploration environments. However radar has shortcomings such as a large footprint, sidelobes, specularity effects and limited range resolution—all of which result in poor environment maps. Th...

CFAR (Constant False Alarm Rate) detectors were designed and evaluated in non-homogeneous DVB-T (Digital Video Broadcasting-Terrestrial) passive radar scenarios. The CA-CFAR (Cell-Averaged CFAR) is the most widespread incoherent CFAR technique. CA-CFAR detector is optimal under the assumption of homogeneous interference, but CA-CFAR performance is degraded when this assumption is not fulfilled....

[1] Numerous studies show a relationship between radar backscattering and surface roughness. While estimating the statistical properties of small-scale topography is of particular interest for geologic analysis of Cassini radar data, there is no analytic description of radar scattering over a wide range of incidence angles and roughness. This paper presents an empirical function that links the ...

In this article, a novel bicepstrum-based approach is suggested for ground moving radar target classification. Distinctive classification features were extracted from short-time backscattering bispectrum estimates of the micro-Doppler signature. Real radar data were obtained using surveillance Doppler microwave radar operating at 34 GHz. Classifier performance was studied in detail using the Ga...

At present, the research about radar clutter has been a special field, which greatly affects the development and application of radar in remote sensing. The radar clutter is very complicated, because it is a kind of random process, besides it isn’t visible to human. This paper presents an innovative and creative method to support this research. It makes use of ‘ 3S’ (RS, GPS, GIS) integrated te...

Some typical problems solved by the combination and the complementary use of different investigation techniques such as boroscopy, radar and sonic tests, flat-jack and sonic tests, sonic and radar tomography and others will be presented. Résumé On présente quelques problèmes typiques concernant bâtiments historiques, résolus par l’usage de techniques d'enquête complémentaires, telles que la bor...