We created the dataset of satellite imagery to perform object detection using convolutional neural network-based frameworks such as faster RCNN (faster region-based convolutional neural network), YOLO (you only look once), SSD (single-shot detector) and SIMRDWN (satellite imagery multiscale rapid detection with windowed networks). This study aims to compare the performance of existing deep learning algorithms for object detection in satellite imagery.

Object detection in satellite images has many challenges such as class variations, multiple objects pose, high variance in object size, illumination and a dense background. In satellite imagery, object detection is a very complicated task due to various reasons including low pixel resolution of objects and detection of small objects in the large scale (a single satellite image taken by Digital Globe comprises over 240 million pixels) satellite images. Originally published on Live Science.Object detection is a vital step in satellite imagery-based computer vision applications such as precision agriculture, urban planning and defense applications. The minisatellite, measuring less than 35 cubic feet (1 cubic meter), was launched in 2013 to chart global vegetation changes.įollow Becky Oskin Follow Live Science Facebook & Google+. The ESA flight-tracking experiment was a proof-of-concept study that tagged along on the Proba-V minisatellite. Secondary radar uses a transponder to send location information directly from the plane. Primary radar determines a plane's position by bouncing signals off the aircraft. The technology will both send and receive broadcasts from aircraft, giving flight information such as speed, position and altitude. The equipment could replace secondary radar and help improve safety by providing more accurate positions and better surveillance.

The satellite flight patterns reveal where to find peace and quiet from screaming jet engines: the Sahara, the Himalayas, Madagascar, Alaska's Brooks Range and, perhaps, a bare patch of Nevada desert (presumably the system isn't tracking military jets, which often buzz this corner of the Southwest).ĪDS-B signals are part of a new satellite tracking system that is being phased in worldwide for the commercial aviation industry.

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