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TecSAR-1
TecSAR-1, also known as TechSAR, Polaris and Ofeq-8, is an Israeli reconnaissance satellite, equipped with a synthetic-aperture radar (SAR) developed by Elta Systems. It was successfully launched at 03:45 UTC on 21 January 2008, by PSLV C-10 launch vehicle, from the Satish Dhawan Space Centre in India. The TecSAR satellite is fitted with a large dish-like antenna to transmit and receive radar signals that can penetrate darkness and thickness of clouds. Built by Israel Aerospace Industries, TecSAR ranks among the world's most advanced space systems. Elta Systems Ltd cooperates with Azerbaijan to produce a TecSAR reconnaissance satellite system for the country. According to Azerbaijani military experts, this is an indispensable system for military operations in the mountainous terrains of Azerbaijan. Launch The satellite was successfully delivered into its target orbit about twenty minutes after launch. The four-stage PSLV rocket flew in the CA, or "Core Alone" configurat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ofeq-7
Ofeq-7, (also known as Ofek 7 or Offek-7), is part of the Ofeq family of Earth observation satellites designed and built by Israel Aerospace Industries (IAI) for the Israel Ministry of Defense. Launch The Ofeq-7 was launched by a Shavit 2 space launch vehicle on 10 June 2007 at 23:40 UTC. Equipped with advanced technology and a series of new enhancements to provide improved imagery, it is placed into an elliptical orbit In astrodynamics or celestial mechanics, an elliptic orbit or elliptical orbit is a Kepler orbit with an eccentricity of less than 1; this includes the special case of a circular orbit, with eccentricity equal to 0. In a stricter sense, it ... of . Mission Three days after its launch, on 13 June 2007, IAI MBT Space Division received the first images taken by the satellite. The Ofeq-7 is a follow-on spacecraft to Ofeq-5 that was placed into orbit in 2002. References Reconnaissance satellites of Israel Spacecraft launched in 2007 Spa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ofeq-9
Ofeq-9, also known as Ofek 9 ("Horizon in Hebrew), is part of the Ofeq family of reconnaissance satellites designed and built by Israel Aerospace Industries (IAI) for the Israeli Ministry of Defense. Launch It was launched on 22 June 2010, at 19:00 UTC, from Palmachim Air Baise in Israel. It was delivered using an improved version of the Shavit launcher. Mission The payload is believed to be the multi-spectral "Jupiter" space camera produced by El-Op. While precise imaging capabilities remain classified, sources say that like the still operating Ofeq-5 and Ofeq-7, Ofeq-9 offers a resolution "much better than" a half-meter. The satellite was also said to be able to detect objects being carried by people. The satellite operates in a retrograde low Earth orbit A low Earth orbit (LEO) is an orbit around Earth with a period of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less than 0.25. Most of the artificial objects in outer space are in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imaging Radar
Imaging radar is an application of radar which is used to create two-dimensional images, typically of landscapes. Imaging radar provides its light to illuminate an area on the ground and take a picture at radio wavelengths. It uses an antenna and digital computer storage to record its images. In a radar image, one can see only the energy that was reflected back towards the radar antenna. The radar moves along a flight path and the area illuminated by the radar, or footprint, is moved along the surface in a swath, building the image as it does so. Digital radar images are composed of many dots. Each pixel in the radar image represents the radar backscatter for that area on the ground: brighter areas represent high backscatter, darker areas represents low backscatter. The traditional application of radar is to display the position and motion of typically highly reflective objects (such as aircraft or ships) by sending out a radiowave signal, and then detecting the direction and de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azerbaijani Armed Forces
The Azerbaijani Armed Forces ( az, Azərbaycan Silahlı Qüvvələri) were re-established according to the Law of the Republic of Azerbaijan on the Armed Forces from 9 October 1991. The Azerbaijan Democratic Republic (ADR) had originally formed its own armed forces from 26 June 1918 but were dissolved after Azerbaijan was absorbed into the Soviet Union as the Azerbaijan Soviet Socialist Republic from 28 April 1920. After the Soviet Union dissolved in 1991–92, the armed forces were reformed based on Soviet bases and equipment left on Azerbaijani soil. The armed forces have three branches: the Azerbaijani Land Forces, the Azerbaijani Air and Air Defence Force, and the Azerbaijani Navy. Associated forces include the Azerbaijani National Guard, the Internal Troops of Azerbaijan, and the State Border Service, which can be involved in state defense under certain circumstances. According to the Azerbaijani media sources the military expenditures of Azerbaijan for 2009 were set at U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Latrun
Latrun ( he, לטרון, ''Latrun''; ar, اللطرون, ''al-Latrun'') is a strategic hilltop in the Latrun salient in the Ayalon Valley, and a depopulated Palestinian village. It overlooks the road between Tel Aviv and Jerusalem, 25 kilometers west of Jerusalem and 14 kilometers southeast of Ramla. It was the site of fierce fighting during the 1948 war. During the 1948–1967 period, it was occupied by Jordan at the edge of a no man's land between the armistice lines. In the 1967 war, it was occupied by Israel. The hilltop includes the Latrun Abbey, Mini Israel (a park with scale models of historic buildings around Israel), The International Center for the Study of Bird Migration (ICSBM), and the Yad La-Shiryon Memorial and Museum. Neve Shalom (Oasis of Peace) is a joint Jewish-Arab community on a hilltop south of Latrun. Canada Park is nearby to the east. Etymology The name Latrun is ultimately derived from the ruins of a medieval Crusader castle. There are two theories re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
X Band
The X band is the designation for a band of frequencies in the microwave radio region of the electromagnetic spectrum. In some cases, such as in communication engineering, the frequency range of the X band is rather indefinitely set at approximately 7.0–11.2 GHz. In radar engineering, the frequency range is specified by the Institute of Electrical and Electronics Engineers (IEEE) as 8.0–12.0 GHz. The X band is used for radar, satellite communication, and wireless computer networks. Radar X band is used in radar applications including continuous-wave, pulsed, single- polarization, dual-polarization, synthetic aperture radar, and phased arrays. X band radar frequency sub-bands are used in civil, military, and government institutions for weather monitoring, air traffic control, maritime vessel traffic control, defense tracking, and vehicle speed detection for law enforcement. X band is often used in modern radars. The shorter wavelengths of the X band allow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orbital Inclination
Orbital inclination measures the tilt of an object's orbit around a celestial body. It is expressed as the angle between a reference plane and the orbital plane or axis of direction of the orbiting object. For a satellite orbiting the Earth directly above the Equator, the plane of the satellite's orbit is the same as the Earth's equatorial plane, and the satellite's orbital inclination is 0°. The general case for a circular orbit is that it is tilted, spending half an orbit over the northern hemisphere and half over the southern. If the orbit swung between 20° north latitude and 20° south latitude, then its orbital inclination would be 20°. Orbits The inclination is one of the six orbital elements describing the shape and orientation of a celestial orbit. It is the angle between the orbital plane and the plane of reference, normally stated in degrees. For a satellite orbiting a planet, the plane of reference is usually the plane containing the planet's equator. For pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apsis
An apsis (; ) is the farthest or nearest point in the orbit of a planetary body about its primary body. For example, the apsides of the Earth are called the aphelion and perihelion. General description There are two apsides in any elliptic orbit. The name for each apsis is created from the prefixes ''ap-'', ''apo-'' (), or ''peri-'' (), each referring to the farthest and closest point to the primary body the affixing necessary suffix that describes the primary body in the orbit. In this case, the suffix for Earth is ''-gee'', so the apsides' names are ''apogee'' and ''perigee''. For the Sun, its suffix is ''-helion'', so the names are ''aphelion'' and ''perihelion''. According to Newton's laws of motion, all periodic orbits are ellipses. The barycenter of the two bodies may lie well within the bigger body—e.g., the Earth–Moon barycenter is about 75% of the way from Earth's center to its surface. If, compared to the larger mass, the smaller mass is negligible (e.g., f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Low Earth Orbit
A low Earth orbit (LEO) is an orbit around Earth with a period of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less than 0.25. Most of the artificial objects in outer space are in LEO, with an altitude never more than about one-third of the radius of Earth. The term ''LEO region'' is also used for the area of space below an altitude of (about one-third of Earth's radius). Objects in orbits that pass through this zone, even if they have an apogee further out or are sub-orbital, are carefully tracked since they present a collision risk to the many LEO satellites. All crewed space stations to date have been within LEO. From 1968 to 1972, the Apollo program's lunar missions sent humans beyond LEO. Since the end of the Apollo program, no human spaceflights have been beyond LEO. Defining characteristics A wide variety of sources define LEO in terms of altitude. The altitude of an object in an elliptic orbit can vary significantly along the orbit. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Federal Government Of The United States
The federal government of the United States (U.S. federal government or U.S. government) is the national government of the United States, a federal republic located primarily in North America, composed of 50 states, a city within a federal district (the city of Washington in the District of Columbia, where most of the federal government is based), five major self-governing territories and several island possessions. The federal government, sometimes simply referred to as Washington, is composed of three distinct branches: legislative, executive, and judicial, whose powers are vested by the U.S. Constitution in the Congress, the president and the federal courts, respectively. The powers and duties of these branches are further defined by acts of Congress, including the creation of executive departments and courts inferior to the Supreme Court. Naming The full name of the republic is "United States of America". No other name appears in the Constitution, and this i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shavit 2
Shavit 2 (Hebrew: "comet" – שביט) is a small lift launch vehicle produced by Israel from 1982 onwards, to launch satellites into low Earth orbit. It was first launched on 19 September 1988 (carrying an Ofek-1 satellite payload), making Israel the eighth nation to have an orbital launch capability after the USSR, United States, France, Japan, People's Republic of China, United Kingdom, and India. The Shavit 2 project is believed to have been an offshoot development, resulting from Israel's Jericho nuclear armed intercontinental ballistic missile (ICBM) program. Shavit rockets are launched from Palmachim Airbase by the Israel Space Agency into highly retrograde orbits over the Mediterranean Sea to prevent debris coming down in populated areas and also to avoid flying over nations hostile to Israel to the east; this results in a lower payload-to-orbit than east-directed launches would allow. The launcher consists of three stages powered by solid-fuel rocket motors, wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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