航空学报
航空學報
항공학보
ACTA AERONAUTICA ET ASTRONAUTICA SINICA
2001年
2期
175-176
,共2页
双星定位%全球定位系统%导航
雙星定位%全毬定位繫統%導航
쌍성정위%전구정위계통%도항
双星定位系统只需要两颗同步卫星便可以为用户提供定位服务,但却存在着用户位置易暴露和用户数量易饱和这两大缺陷。建议采用三颗同步导航卫星像GPS卫星那样向用户播发导航电文,用户接收机根据这些导航电文信息以及气压高度表信息,像GPS接收机那样解算用户位置,从而克服了双星定位的两大缺陷。仿真表明本定位原理行之有效。
雙星定位繫統隻需要兩顆同步衛星便可以為用戶提供定位服務,但卻存在著用戶位置易暴露和用戶數量易飽和這兩大缺陷。建議採用三顆同步導航衛星像GPS衛星那樣嚮用戶播髮導航電文,用戶接收機根據這些導航電文信息以及氣壓高度錶信息,像GPS接收機那樣解算用戶位置,從而剋服瞭雙星定位的兩大缺陷。倣真錶明本定位原理行之有效。
쌍성정위계통지수요량과동보위성편가이위용호제공정위복무,단각존재착용호위치역폭로화용호수량역포화저량대결함。건의채용삼과동보도항위성상GPS위성나양향용호파발도항전문,용호접수궤근거저사도항전문신식이급기압고도표신식,상GPS접수궤나양해산용호위치,종이극복료쌍성정위적량대결함。방진표명본정위원리행지유효。
The GEOSTAR system uses only two geostationary satellites to provide positioning service for a certain user, while there are two great drawbacks in it, i.e, the position of the user is liable to be detected by enemy and the number of users is liable to be saturated. This paper suggests a brand new positioning system which employs three geostationary satellites emitting radio signals to users just like the GPS satellites do, and allows the user's receiver to solve position based on the received radio signal as well as the reading of barometer; hence, the drawbacks of GEOSTAR are overcome. Simulation results show that the principle of this new positioning system is correct and effective.