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golden goose italy it is necessary to set up a dedicated

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  • Started 10 years ago by zki5u1m820

  1. zki5u1m820
    Member

    <p> but after finding the target can be set can "burn" mode to improve the tracking distance, providing more reaction time of shipboard weapon systems. Stealth make shipborne radar target to reduce the power to make themselves exposed to the threat of other weapons systems, stealth objectives, battlefield transparency is much stronger than the non-stealthy side. When warning radar and weapons systems to provide precision tracking data to meet the required distance,doudoune moncler pas cher, one's own ship was not enough weapons reaction time,hogan rebel, and they already can implement missile attack. Currently stealth target detection commonly used means is the use of VHF radar, millimeter-wave radar or dual / multi-radar, the use of stealth target at certain frequency bands and viewing angle characteristics of stealth effect is reduced to increase its detection range. For example, the US military's F-117 stealth fighter, for 2-3 cm wavelength radar, the RCS radar cross-sectional area of about 0.1 square meters.</p>

    <p> height erected early Wenxin impact on ship larger, we must strike a balance between the height and the ship's stability erected between, so its detection range sea is limited. In view of the phased array radar erection height is usually low, the operating wavelength is longer, wider near its blind spots and more, therefore occurs on the sea surface target tracking discontinuity because of the limited bandwidth of the radar work, so it is difficult to reduce work through broadband this phenomenon. With the widespread use of States Navy supersonic anti-ship missiles, low-altitude sea-skimming missiles has become a major threat facing the ship,hogan 2014, there supersonic and hypersonic anti-ship missile, the threat is even more serious, for shipboard weapon systems The reaction time requirements are higher, which requires phased array radar has a detection range farther out to sea,hogan interactive, the higher the rate of search data and better tracking precision track to meet the weapon fire control system response time and data quality requirements. This ship-based multifunction phased array radar has been difficult to competent, it is necessary to set up a dedicated, erected with high use of the sea for Sea Surface Targets and better performance of the band, using the best of form and signal processing methods to reduce sea miscellaneous wave interference, improve the performance of sea-skimming target observations. Such as the October 2013 launch of the United States Zhu super new destroyer.</p>

    <p> but also has a fire control radar accuracy. Its alert warning from the more than 300 kilometers, the whole airspace search data rates from 10 to 20 seconds. To meet carrier-guided weapon systems and fire control accuracy requirements, radar tracking accuracy can not be more than 10 points,hogan uomo, and tracking accuracy in general shipboard surveillance radars often within a few degrees. Consider multi-disciplinary performance and the current level of technology and economy, shipborne phased array radar in S-band radars are generally as a working band. S-band and C-band and X-band comparison, beam width, the available bandwidth is narrow, sea clutter suppression capability is not strong. For CMM,hogan 2014, this type of needle beam radar are used,hogan sito ufficiale, in order to improve reliability, are generally used to work in a saturated amplification mode solid-state transmitter. Since the transmitter output power is not adjustable, it is not as common as the transmit beam forming performed on the Sea Surface Targets,hogan outlet online, resulting in more intense at sea clutter low altitude or sea-skimming mode. When nearshore work if other abnormal evaporation waveguide propagation effects are obvious, there will be a large number of remote land, islands and other clutter appear multiple folding distance clutter suppression will further increase the difficulty. In order to ensure multi-tasking and multi-target capability,hogan outlet, this time is generally not used MTD or PD,golden goose scarpe, a large number of time-consuming radar resources work, which limits the radar clutter suppression effect. Radar detection of the sea is linear transmission type, affected curvature of the Earth, the detection distance is generally horizon. As the saying goes,hogan olympia donna, stand high and see far ahead, to increase the distance of the sea is the best way to detect radar aircraft is high, but because of the phased array radar larger heavier weight.</p>

    <p> not only install the SPY-3 Multi-function phased array radar,hogan donna, also installed X-band radar coordinate to solve the detection problem at low altitude sea-skimming targets. Chinese navy in the domestic 346 type of phased array radar guided missile destroyer 052C and 052D also installed 366 installed multi-band over the horizon radar, the sea over the horizon detection range of up to 100 kilometers to hundreds of kilometers. Data Figure: 052D destroyer main mast radar CloseShipboard multifunction phased array radar search stealth targets and no advantage.</p>

    <p> Although multifunction phased array radar has many advantages, but as with any weapons and equipment, has its benefits but also disadvantages. From the cost, the cost of phased array radar is generally high, often several times and even ordinary radar hundreds of times,hogan prezzi, which makes the multifunction phased array radar equipment is generally only on some high-end battle ships; from fitness Ship loaded terms,hogan scarpe, due to the weight multifunction phased array radar generally heavier and larger, therefore, it can only be equipped on large ships. From the energy consumption,hogan interactive donna, the multi-function phased array radar power is larger, long boot of the ships spend much valuable energy resources. In performance,moncler doudoune, multi-function phased array radar also has some shortcomings,doudoune femme moncler, such as sea clutter suppression clutter in particular lack of capacity, lack of ability to detect stealth targets, lack of self-defense in the fight against noise interference, detecting low altitude and sea-skimming target lack of capacity,golden goose outlet online, in the strong clutter performance degradation. Data Figure: The new generation of carrier-052D missile destroyer equipped with active phased array radar systemRange surveillance capability shipboard multifunction phased array radar existing early warning radar.</p>
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