نتایج جستجو برای: radar cross

تعداد نتایج: 525358  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده فنی و مهندسی 1386
نصرت اله نادرزاده, محمدمهدی کارخانه چی,

چکیده ندارد.

15 صفحه اول
Journal: :مهندسی فناوری اطلاعات مکانی 0
رضا شاه حسینی reza shah-hosseini مصطفی اسمعیلی mostafa esmaeili عبدارضا صفری abdoreza safari سعید همایونی said homayouni جلال امینی jalal amini حمید عزت آبادی پور hamid ezzatabadipour

coregistration of optical and radar imageries is a major pre-processing step in many remote sensing applications including change detection and interferometric processing. specially, the coregistration faced more difficulties in radar imageries due to the high noise level and intense spatial-temporal decorrelation. hence, non-automatic coregistration methods are much more time consuming and ine...

متن کامل
Journal: :journal of electrical and computer engineering innovations 0
hossein mohammadzadeh department‎ of electrical and computer engineering‎, ‎isfahan university of technology (iut)‎, ‎isfahan‎, ‎iran abolghasem zeidaabadi-nezhad1 department‎ of electrical and computer engineering‎, ‎isfahan university of technology (iut)‎, ‎isfahan‎, ‎iran zaker hossein firouzeh department‎ of electrical and computer engineering‎, ‎isfahan university of technology (iut)‎, ‎isfahan‎, ‎iran

the radar cross section of a target plays an important role in the detection of targets by radars‎. ‎this paper presents a new method to predict the bistatic and monostatic rcs of coated electrically large objects. ‎the bodies can be covered by lossy electric and/or magnetic radar absorbing materials (rams)‎. ‎these materials can be approximated by the fresnel reflection coefficients‎. ‎the pro...

متن کامل
2014
P. JYOTSNA TIRUMALA RAO

The performance of multiple input multiple output (MIMO) radar configurations of distributed antennas are analyzed. Statistical multiple input multiple output (MIMO) radar develops angular diversity to mitigate the impact of radar cross section fluctuations (RCF). The fluctuations can be modeled with scattering model consists of non-orthogonal waveforms for fast target or radar cross section fl...

متن کامل
2016
Armin Parsa

An experimental study of glacier ice detection in rain using X-band radar is presented. The radar data were collected in the Greenland Sea region in August 2013, using a cross-polarized X-band radar, capable of simultaneously measuring coand cross-polarized backscattered waves. The system was deployed on the Oden, a Swedish icebreaker. During the deployment, raw coand cross-polarized radar data...

متن کامل
ژورنال: سنجش و ایمنی پرتو 2020
Hosseni-Moradi, seysd ali, Nanakar, hassan, Nazirzadeh, mehdi,

In this paper, the use of quantum technology in the radar system and the advantages of these radars as compared to classical radars have been analyzed. In the beginning, briefly, we present the basic structure of the theory of quantum electrodynamics, and then the role of photon in this theory and photon interactions is presented.  In the next step, the most general form of the quantum radar cr...

متن کامل
Journal: :رادار 0
مهران تسلیمی عطاالله ابراهیم زاده

radar cross section (rcs) calculation is an important issue of objects stealth and identification. it is necessary to design the rcs software because of the high cost of rcs measurements in practice. in this paper, designing of efficient software using physical optics theorem for radar cross section calculation of the complex perfect electric conductors or complex dielectric objects for high fr...

متن کامل
پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده ریاضی و کامپیوتر 1387
کمال اعتصامی, حسین جوادپور, اردشیر حسین پور,

چکیده ندارد.

15 صفحه اول
Journal: :Remote Sensing 2014
Wen-Qin Wang Huaizong Shao

Radar sensor networks, including biand multi-static radars, provide several operational advantages, like reduced vulnerability, good system flexibility and an increased radar cross-section. However, radar-to-radar interference suppression is a major problem in distributed radar sensor networks. In this paper, we present a cross-matched filtering-based radar-to-radar interference suppression alg...

متن کامل
2009
A. Le Gall M. A. Janssen R. D. Lorenz H. Zebker L. Wye P. Paillou

In June 2008, during the T44 swath, the Cassini SAR (Synthetic Aperture Radar) observed sinuous channels in the South-west of the Xanadu region (Fig. 1 and 2). Some parts of these channels exhibit very large radar cross-sections, up to 5 dB whereas the angle of incidence was ~20°. This is larger than allowed by the coherent backscatter model considered to explain the unusual reflective and pola...

متن کامل

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید

function paginate(evt) { url=/search_year_filter/ var term=document.getElementById("search_meta_data").dataset.term pg=parseInt(evt.target.text) var data={ "year":filter_year, "term":term, "pgn":pg } filtered_res=post_and_fetch(data,url) window.scrollTo(0,0); } function update_search_meta(search_meta) { meta_place=document.getElementById("search_meta_data") term=search_meta.term active_pgn=search_meta.pgn num_res=search_meta.num_res num_pages=search_meta.num_pages year=search_meta.year meta_place.dataset.term=term meta_place.dataset.page=active_pgn meta_place.dataset.num_res=num_res meta_place.dataset.num_pages=num_pages meta_place.dataset.year=year document.getElementById("num_result_place").innerHTML=num_res if (year !== "unfilter"){ document.getElementById("year_filter_label").style="display:inline;" document.getElementById("year_filter_place").innerHTML=year }else { document.getElementById("year_filter_label").style="display:none;" document.getElementById("year_filter_place").innerHTML="" } } function update_pagination() { search_meta_place=document.getElementById('search_meta_data') num_pages=search_meta_place.dataset.num_pages; active_pgn=parseInt(search_meta_place.dataset.page); document.getElementById("pgn-ul").innerHTML=""; pgn_html=""; for (i = 1; i <= num_pages; i++){ if (i===active_pgn){ actv="active" }else {actv=""} pgn_li="
  • " +i+ "
    • "; pgn_html+=pgn_li; } document.getElementById("pgn-ul").innerHTML=pgn_html var pgn_links = document.querySelectorAll('.mypgn'); pgn_links.forEach(function(pgn_link) { pgn_link.addEventListener('click', paginate) }) } function post_and_fetch(data,url) { showLoading() xhr = new XMLHttpRequest(); xhr.open('POST', url, true); xhr.setRequestHeader('Content-Type', 'application/json; charset=UTF-8'); xhr.onreadystatechange = function() { if (xhr.readyState === 4 && xhr.status === 200) { var resp = xhr.responseText; resp_json=JSON.parse(resp) resp_place = document.getElementById("search_result_div") resp_place.innerHTML = resp_json['results'] search_meta = resp_json['meta'] update_search_meta(search_meta) update_pagination() hideLoading() } }; xhr.send(JSON.stringify(data)); } function unfilter() { url=/search_year_filter/ var term=document.getElementById("search_meta_data").dataset.term var data={ "year":"unfilter", "term":term, "pgn":1 } filtered_res=post_and_fetch(data,url) } function deactivate_all_bars(){ var yrchart = document.querySelectorAll('.ct-bar'); yrchart.forEach(function(bar) { bar.dataset.active = false bar.style = "stroke:#71a3c5;" }) } year_chart.on("created", function() { var yrchart = document.querySelectorAll('.ct-bar'); yrchart.forEach(function(check) { check.addEventListener('click', checkIndex); }) }); function checkIndex(event) { var yrchart = document.querySelectorAll('.ct-bar'); var year_bar = event.target if (year_bar.dataset.active == "true") { unfilter_res = unfilter() year_bar.dataset.active = false year_bar.style = "stroke:#1d2b3699;" } else { deactivate_all_bars() year_bar.dataset.active = true year_bar.style = "stroke:#e56f6f;" filter_year = chart_data['labels'][Array.from(yrchart).indexOf(year_bar)] url=/search_year_filter/ var term=document.getElementById("search_meta_data").dataset.term var data={ "year":filter_year, "term":term, "pgn":1 } filtered_res=post_and_fetch(data,url) } } function showLoading() { document.getElementById("loading").style.display = "block"; setTimeout(hideLoading, 10000); // 10 seconds } function hideLoading() { document.getElementById("loading").style.display = "none"; } -->