هدایت شده از Strategy
اندِ اِندِ طراحی و آینده پژوهی بعد از سالها تحقیق و تدریس!!! شما هم اگه خوووووب برید آمریکا درس بخونید شاید یه روزی بتونید در این سطح در جهت تامین منافع آمریکا طرح بدید و راست راست بگردید!!!
هدایت شده از AllStudents
مقابله با جنگهای شناختی
Countering Cognitive Warfare
زمان: دوشنبه 17/ 11 / 1401 ساعت 14 تا 15
لینک شرکت در جلسه:
https://vroom.ut.ac.ir/fnst4/
دانشکدۀ علوم و فنون نوین دانشگاه تهران و دانشکدۀ حقوق و علوم سیاسی دانشگاه تهران
هدایت شده از دانشگاه تهران
🔹 ولادت با سعادت مولای متقیان، حضرت علی (ع) تبریک و تهنیت باد
@UT_NEWSLINE
هدایت شده از خبرگزاری تسنیم
مشاهده دومین بالون چینی بر فراز آمریکای لاتین
🔹️سخنگوی پنتاگون: ما گزارشهایی درباره یک بالون که بر فراز آمریکای لاتین حرکت میکند، دریافت کردهایم. ارزیابی ما این است که این یک بالون نظارتی دیگر چین باشد.
🔹وزیر امور خارجه آمریکا: مطمئن هستیم که بالن شناسایی شده چین بر فراز شمال ایالات متحده برای اهداف جاسوسی استفاده میشود و در این مورد با متحدان و شرکای خود صحبت کردیم.
tn.ai/2847875
@TasnimNews
بالون های ارتفاع بالا (High-altitude balloon) از 18 تا 37 کیلومتر میتونن برن بالا (59 تا 121 هزار پا). اما برای خیلی کارih به اون اون ارتفاع نیازی نیست چون یه چیزایی به اسم (balloon satellites ) هم هستند که در ارتفاع 18 تا 21 کیلومتری (60 تا 70 هزار پایی) خیلی از کارهای ماهواره را خیلی ارزونتر از ماهواره انجام میدن. ارتفاع پرواز بالن های جاسوسی 24 تا 37 کیلومتر هست البته فرستادنشون بالا سر دشمن آسون نیست.
هدایت شده از Strategy
Sacyr News Blog
Stratospheric balloons for spying from high altitudes
Several companies are trying to develop balloons that cannot be detected by enemy radar. Credit: NASA.
Tungsteno
Stratospheric balloons for spying from high altitudes
In addition to monitoring natural disasters, high-altitude balloons could also prove useful for surveillance missions. Their low cost and ability to operate for days at a time make them an attractive alternative over other aircraft. As such, the US Department of Defense intends to transform them into a key military weapon.
ISABEL RUBIO ARROYO | Tungsteno
Flying high in the skies and spying on the enemy from above without being detected is the dream of many military organisations. While airplanes and satellites are an expensive and limited alternative for surveillance missions, the US Department of Defense is experimenting with high-altitude balloons. These aircraft have been a very useful tool for science and technological innovation, both in the study of the cosmos and in weather research and forecasting. Here we analyse the viability of this old technology compared to the most sophisticated drones and latest-generation aircraft.
The dream of surveillance from above
Among the main disadvantages of drones and airplanes are the time limitations to survey an area and the cost. "Even with something like the Global Hawk (the US main strategic reconnaissance drone), you only get about 20 hours over the area of interest, and less than that if you have to travel a significant distance to get there," says Justin Bronk, an analyst for the UK defence thinktank RUSI, in Popular Mechanics magazine.
While multiple powers are looking for ways to monitor an area for weeks at a time at an affordable price, some have identified stratospheric balloons (which fly between 15 and 50 kilometres above sea level) as a potential solution. One such example is World View Enterprises, an Arizona-based company that develops technology for the Pentagon and NASA, as well as offering space tourism services. A couple of years ago, the company managed to keep one of its balloons aloft for 32 days. Its creators claim that such balloons, which have a volume of up to 800,000 cubic feet (22,650 cubic metres), could be used to monitor natural disasters or for military reconnaissance missions.
The low cost of high-altitude balloons and their ability to operate for days at a time may make them an attractive alternative over other aircraft. Credit: NASA Wallops.
Technology to detect supersonic missiles
The COLD STAR (COvert Long Dwell STratospifer ARchitecture) programme of the US Department of Defense aims to spy on its enemies with stratospheric balloons equipped with high-fidelity sensors, autonomous navigation systems and artificial intelligence. Such aircraft, which appear to have already been tested, could be used to detect hypersonic missiles—which travel at least five times faster than the speed of sound. In addition, the gondola (the basket hanging from the balloon) can carry everything from daylight and thermal cameras to radar, radio frequency sensors, solar panels or swarms of drones to carry out more surveillance missions.
The balloons in this programme are designed to remain completely transparent to enemy radar. In theory, their gondolas could also go unnoticed by being designed without straight lines and sharp corners that produce reflections. But in reality, no balloon can ever be completely invisible, as the Popular Mechanics website points out: "Even at 80,000 feet [about 24 kilometres] such a large object is visible as a bright blob if caught by sunlight at the right angle." Still, Bronk stresses that many older radar systems automatically identify objects flying slowly overhead as birds. In the face of antiquated radar technology, these balloons could pass undetected.