Research on FMCW SAR signal characteristic and improved azimuth matched filtering algorithm

Hai-ping, Hou; Qu, Changsheng; Sun, Han-bing; Song, Ru-gang

doi:10.1109/apsar.2009.5374152

Cited by 3 publications

(1 citation statement)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As expected, the result of range and azimuth compression is a bi-dimensional sinc function multiplied by two complex exponentials, the former depending on both the minimum platform to target distance and a reference distance R ref used for the processing [ 39 ], the latter depending only on the reference distance and system parameters. Namely:

where f R is the range frequency, x 0 is the position of the target along the azimuth direction with respect to the center scene and τ ref is the time delay of the echo at reference range R ref , which corresponds to the range from the center scene.…”

Section: System Architecturementioning

confidence: 95%

Preliminary Study of a Millimeter Wave FMCW InSAR for UAS Indoor Navigation

Scannapieco

Renga

Moccia

2015

Sensors

View full text Add to dashboard Cite

Small autonomous unmanned aerial systems (UAS) could be used for indoor inspection in emergency missions, such as damage assessment or the search for survivors in dangerous environments, e.g., power plants, underground railways, mines and industrial warehouses. Two basic functions are required to carry out these tasks, that is autonomous GPS-denied navigation with obstacle detection and high-resolution 3D mapping with moving target detection. State-of-the-art sensors for UAS are very sensitive to environmental conditions and often fail in the case of poor visibility caused by dust, fog, smoke, flames or other factors that are met as nominal mission scenarios when operating indoors. This paper is a preliminary study concerning an innovative radar sensor based on the interferometric Synthetic Aperture Radar (SAR) principle, which has the potential to satisfy stringent requirements set by indoor autonomous operation. An architectural solution based on a frequency-modulated continuous wave (FMCW) scheme is proposed after a detailed analysis of existing compact and lightweight SAR. A preliminary system design is obtained, and the main imaging peculiarities of the novel sensor are discussed, demonstrating that high-resolution, high-quality observation of an assigned control volume can be achieved.

show abstract