GPSによる三周波数アンビギュイテイ決定(AMBIGUITY RESOLUTION : AR)に関する研究

GPSによる三周波数アンビギュイテイ決定(AMBIGUITY RESOLUTION : AR)に関する研究
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DOI:
10.9749/jin.112.219
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发表时间:
2005-03
期刊:
The Journal of Japan Institute of Navigation
影响因子:
--
通讯作者:
信明 久保;明生 安田
信明 久保;明生 安田
中科院分区:
其他
文献类型:
--
作者:
信明 久保;明生 安田

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作为GPS(全球定位系统)现代化的一部分,GPS系统将增加第三个民用频率1176.45MHz。载波相位差分用户将是主要受益者。从模糊度成功率(ASR)的结果,使用三频信号模拟的数据,模糊度解算(AR)中的三个频率的好处可以确认。研究发现,在短基线和中基线(约小于30km)下,三频域中采用宽线法可以改善AR。但是,由于电离层误差,载波相位差分测量的较长距离用户将从新频率看到有限的增益。如果使用几何无关方法,AR将变得与基线影响无关,并且可以通过仅降低载波相位信号噪声来改善。
As part of the modernization of GPS (Global positioning system), a third civil frequency at 1176.45MHz will be added to the GPS system. The carrier-phase differential user will be a prime beneficiary. From the results of ambiguity success rate (ASR) using data from triple frequencies signal simulation, the benefits from the triple frequency in ambiguity resolution (AR) can be confirmed. It can be found that in the triple frequencies, AR will be improved under short and medium baseline (about less than 30km) by using widelane method. But the longer distance user of carrier-phase differential measurement will see limited gains from the new frequency because of ionosphere error. If the geometry-free method is used, AR will become independent on the baseline influence, and can be improved by only reducing carrier phase signal noise.