نتایج جستجو برای: radar

تعداد نتایج: 37462  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده فنی و مهندسی 1386

چکیده ندارد.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد 1386

چکیده ندارد.

Journal: :international journal of electrical and electronics engineering 0
mahdi fathi department of aerospace engineering, malek ashtar university of technology nematollah ghahramani faculty/ department of electrical engineering, malek ashtar university of technology mohammad ali shahi ashtiani faculty/ department of aerospace engineering, malek ashtar university of technology mohsen fallah faculty/ department of electrical engineering, malek ashtar university of technology ali mohammadi faculty/department of aerospace engineering, malek ashtar university of technology

against the range-dependent accuracy of the tracking radar measurements including range, elevation and bearing angles, a new hybrid adaptive kalman filter is proposed to enhance the performance of the radar aided strapdown inertial navigation system (ins/radar). this filter involves the concept of residual-based adaptive estimation and adaptive fading kalman filter and tunes dynamically the fil...

Journal: :iranian journal of public health 0
seyed mohammad javad mortazavi medical physics & medical engineering department, school of medicine, shiraz university of medical sciences, shiraz, iran ; the center for research on radiological sciences, school of allied medical sciences, shiraz university of medical sciences, shiraz, iran. shahram taeb naser dehghan

radar transmitters emit high-power radiofrequency radiation by creation of a high-voltage and high-frequency alternating electrical current.health effects of occupational exposure to military radar were investigated. visual reaction time was recorded with a simple blind computer-assisted-visual reaction time test. to assess the short-term memory, modified wechsler memory scale test was performe...

Journal: :آب و خاک 0
طوفانی نژاد طوفانی نژاد کمالی کمالی علیزاده علیزاده

abstract obtaining reliable precipitation observations is important for hydrological simulations and weather forecasting. radar data can provide insight in the spatial variation of precipitation and can also detect large areas of rain and estimate rainfall rates. weather radar systems nearly always operate in s-, c- or x-band. since x-band systems require smaller antennas than those at c- or s-...

Against the range-dependent accuracy of the tracking radar measurements including range, elevation and bearing angles, a new hybrid adaptive Kalman filter is proposed to enhance the performance of the radar aided strapdown inertial navigation system (INS/Radar). This filter involves the concept of residual-based adaptive estimation and adaptive fading Kalman filter and tunes dynamically the fil...

Journal: :فیزیک زمین و فضا 0
محسن اویسی مؤخر

ground penetrating radar (gpr) and magnetic methods were used at ghasr-e-shirin town in kermanshah province, southwest of iran for detecting a series of large ancient (ca 1500 years) underground cavities (tagh). the area of study is a historical monument which is named as emarat e khosro. radar and total intensity magnetic field measurements have been done on the eastern part of the complex, wh...

Journal: :رادار 0
حمید رضا دهقان منشادی مهرزاد بیغش محمد علی مسندی شیرازی

see through the wall radar, is a relatively new small range radar that uses electromagnetic waves to detect targets behind wall. because of its symmetry, a conducting sphere is often used as a reference scatterer to calibrate radars. in this paper, to simulate received signal for see through the wall radar, scattering model of a conducting sphere in free space is presented. then using a dielect...

  Abstract Mines with their displacements cause damage to infrastructure and land, so it is important to control the displacement caused by mines. Also, the amount of minerals extracted from mines has always been of interest to managers. On the other hand, radar interferometry, given the production of repetitive and full images and the acceptable accuracy of this method, in examining be sugge...

Abstract: This paper proposes a novel scheme for multi-static passive radar processing, based on soft-input soft-output processing and Bayesian sparse estimation. In this scheme, each receiver estimates the probability of target presence based on its received signal and the prior information received from a central processor. The resulting posterior target probabilities are transmitted to the c...

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