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This paper presents the system performance and flight testing of an advanced technology demonstrator for a low-cost and small size near-field obstacle warning sensor for civil and military helicopters. Based on the previously developed sensor modules, the complete sensor system was successfully tested during flight tests and the results of the visualization of various obstacles detected like antennas,...
This paper reports for the first time on a novel development for a miniaturized and low cost near field obstacle warning sensor for helicopters based on an adapted electronically steerable automotive radar. All system components, from the RF-modules, to the baseband, signal processing algorithms and data visualization were developed and a complete radar prototype was built. First ground-based system...
This publication explores the influence of a realistic multipath channel model to satellite navigation applications in urban environments. In this context we have discovered that there is a tradeoff between accuracy and robustness concerning the bandwidth. While narrow band signals such as GPS C/A, BOC (1,1) proved to be robust especially under shadowing situations the wideband signals lost lock very...
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