现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2014年
19期
82-84,88
,共4页
卫星信号%电离层%对流层%大气层结构特点分析
衛星信號%電離層%對流層%大氣層結構特點分析
위성신호%전리층%대류층%대기층결구특점분석
satellite signal%ionosphere%troposphere%atmospheric structure feature analysis
针对卫星信号下行路径上存在的折射和延迟等问题，分析了大气层的结构特点及其对卫星信道造成的不利影响，其中电离层对C波段信号的折射、对流层对Ka波段信号的延迟和电离层闪烁是分析的重点。提出了应对大气层不利影响的方法，指出必须设计可变参数模型并结合实时空间天气和气象预报的数据才能实现对卫星信道的有效校正和补偿。
針對衛星信號下行路徑上存在的摺射和延遲等問題，分析瞭大氣層的結構特點及其對衛星信道造成的不利影響，其中電離層對C波段信號的摺射、對流層對Ka波段信號的延遲和電離層閃爍是分析的重點。提齣瞭應對大氣層不利影響的方法，指齣必鬚設計可變參數模型併結閤實時空間天氣和氣象預報的數據纔能實現對衛星信道的有效校正和補償。
침대위성신호하행로경상존재적절사화연지등문제，분석료대기층적결구특점급기대위성신도조성적불리영향，기중전리층대C파단신호적절사、대류층대Ka파단신호적연지화전리층섬삭시분석적중점。제출료응대대기층불리영향적방법，지출필수설계가변삼수모형병결합실시공간천기화기상예보적수거재능실현대위성신도적유효교정화보상。
For the refraction and delay phenomena existing in the down-going way of satellite signal,the structure features of the atmosphere and the adverse effect of atmosphere on the satellite signal channel are analyzed. The C band signal refraction in ionosphere,the delay of Ka band signal in troposphere and the ionosphere scintillation are analyzed emphatically in this pa-per. The countermeasures for the adverse effects are proposed. It is pointed out that only by designing of the parameter variable model,and combination with the real-time space weather and forecasting data of meteorology can the effective correction and compensation of the satellite signal channel be realized.
