Learn More
Multipath effects are investigated on inverse synthetic aperture radar (ISAR) image reconstruction of ships with rectilinear motion in different sea state. First, the generalized problems of multipath propagation in radar application are formulated. After a brief review of ISAR imaging principles, multipath propagation effects on ISAR imaging are(More)
Reliability and validity have always been the most important criteria in micro-satellite designing. Beside this, other important factors such as miniaturization, fault tolerance, data rate, redundancy and power consumption should also be fulfilled by satellite systems. The limitation to reliability and redundancy is the interdependent links of subsystem and(More)
Fuzzy learning algorithm of UAV is considered in this paper. It allows real time self-tuning of parameters of the controller's membership functions. The primary structure of the fuzzy controller is synthesized via &#x201C;crisp&#x201D; prototype based on the robust H<inf>2</inf>/H<inf>&#x221E;</inf>-optimization. It is shown that obtained control algorithm(More)
To address the issues of single event upsets caused by radiation in outer space to micro-satellites, we proposed a novel reconfigurable on-board computer system with three soft core CPUs inside the Field Programmable Gate Array(FPGA), with the function of error detecting and restoring configuration. Two of the soft core CPUs act as the central processing(More)
Satellite flying formation missions are being prepared by more and more aerospace centers for the potentials they have. They also bring challenges like clock synchronization. This paper introduces a dedicated hardware device, General Cell (GC), which is a general micro-platform of spacecraft C&amp;DH system, fully fits to formation flying space(More)
Due to the high cost of polymer electrolyte fuel cells (PEFCs), replacing platinum (Pt) with some inexpensive metal was carried out. Here, we deposited palladium nanoparticles (Pd-NPs) on nanoporous carbon (NC) after wrapping by poly[2,2'-(2,6-pyridine)-5,5'-bibenzimidazole] (PyPBI) doped with phosphoric acid (PA) and the Pd-NPs size was successfully(More)
This paper presents the application of the emulated bistatic radar (EBR) geometries to 3D interferometric inverse synthetic aperture radar (In-ISAR) imaging techniques. The EBR is introduced into the height estimation of a target in order to reduce the expenses and complexity associated with standard interferometric processing systems, while the In-ISAR(More)
  • 1