<p> Li Heng return capsule placement in order to improve forecast accuracy,hogan uomo, to ensure the safety of the astronauts, to have reached the required engineering design scheme to overthrow the impact point prediction accuracy firmly locked within 1 km.Innovation dilemmaOur self-developed Beidou satellite navigation system,hogan on line,http://bbs.fenglu1688.com/home.php?mod=space&uid=16661, following the US GPS and the Russian GLONASS systems mature system of the third satellite navigation system.Successively in time, inevitably people can not help think of "reference" word. When the second-generation Beidou satellite navigation engineering-related research on Li Heng and his team assume,scarpe hogan, "reference" as a time-saving shortcuts,hogan donna, and indeed make some people move the heart."Than the painted gourd dipper,hogan outlet roma, I can not answer why so many put satellite deployment, optimization problems can only be controlled by others." Li Heng Choice from basic research to start,http://hyunjoochina1st.s-club.tw/viewthread.php?tid=94431&extra=, rather than blindly follow foreign design and control concepts.A few years, Li Heng led the research group has undertaken in three navigation constellation design and configuration control related topics of major projects,hogan saldi, completed the Beidou navigation satellite constellation II deployment and stable operation of the top-level design programs.People did not expect that.</p>
<p>"Satellite could extended service, how long can the extended service,piumino woolrich, the star is an important determinant of fuel. Once the fuel runs out, the loss of the satellite will orbit correction capability gradually scrapped." Control Technology Xi'an Satellite Control Center director,http://bbs.cgangs.com/home.php?mod=spacecp&ac=blog, said Yang Kaizhong The key is to achieve fuel savings of precise measurement and control of the satellite - This is a long term Heng years.By the end of 1999,hogan rebel outlet, China's self-developed spin-stabilized satellite "Fengyun" launch soon. When he was 32-year-old Li Heng read in satellite attitude control software code after discovery,hogan bianche, mathematical models and algorithms used in the original program has lagged behind the level of computer development.Do you want to change? As a young engineer,hogan interactive, Li Heng was not sure in my heart. After all,hogan bambino,http://www.syl5.com/home.php?mod=space&uid=25590, the original proposal is the older generation of scientists personally validated the classical model, and after years of using the test case could change how bad end?"Relates to the cost of hundreds of million of satellite, can change not change, it is in the heart uneasy." After more than two months,hogan bambino, Li Heng years repeatedly checking derivation,hogan spaccio, identified the new program better, he made a report to the leadership. Satellite Development Party certainly do not agree with chicken changed.After once again communicate.</p>
<p> Li Heng was finally when he was in the deputy chief engineer of the Xi'an Satellite Control Center,http://lemvll.com/forum.php?mod=viewthread&tid=49940,scarpe hogan outlet, under the support of Chinese Academy of Sciences Li Jisheng, get a chance on the same stage with the old program simulation tests. As a result,hogan outlet roma,http://www.maleoworld.com/index.php/User:S7%C3%88%C3%95%C3%96%C2%AE%C3%8F%C2%A6%C3%92%C3%93#hogan_outlet_oGn0IQJmZdDNEmX3o5, the new program wins.Later,outlet hogan italia, this new algorithm in the "FY" satellite monitoring and control tasks successfully used the satellite attitude determination accuracy is increased by 30 times, orbit control accuracy increased by nearly 10 times,hogan bimbi, saving on-board fuel nearly 15 kilograms,http://218.3.39.116:554/bbs/showtopic-2235667.aspx,hogan uomo, an increase of 7 satellite Year over energy security,http://www.kh.rim.or.jp/~goburin/cgi-bin/custombbs.cgi/, the spin satellite monitoring the level of China into the international advanced level.Difficult to deny the authority to deny yourself is no small task.Shenzhou V mission.</p>