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首页> 外文会议>12th international technical meeting of the Satellite Division of the Institute of Navigation (ION GPS-99) >Double Difference Ambiguity Resolution for GLONASS/GPS Carrier Phase
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Double Difference Ambiguity Resolution for GLONASS/GPS Carrier Phase

机译：GLONASS / GPS载波相位的双差歧义度解析度

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The satellite constellation and the signal structure of thernRussian GLONASS and the US GPS are comparable.rnGLONASS observations can be processed similarly tornGPS data, if the differences in the reference frame, thernsystem time and in the frequencies of the satellite signalsrnare taken into consideration. The last item leads to a newrnterm in the double difference phase observation equationrnand may destroy the integer nature of the ambiguities.rnThis new term depends on the wavelength difference ofrnthe two satellites involved and the error in the initial sin-gle difference ambiguities. In order to account for thernnew term, we use an iterative ambiguity resolution algo-rithmrnand solve for one double difference ambiguity inrneach iteration step. In the first iteration step the ambiguityrnwith the smallest rms error, resp. the smallest wavelengthrndifference of the two satellites, will be fixed to an integerrnnumber if certain criteria are fulfilled. Each successfullyrnresolved double difference ambiguity of a satellite pairrnwith different wavelengths leads to an improved accuracyrnof the single difference ambiguities in the next iterationrnstep. Thus, the new term is getting smaller with each it-erationrnstep and this should finally allow to resolve therndouble difference ambiguities for all satellite pairs.rnThe algorithm is mainly suited for static GLONASS/GPSrnprocessing of long sessions ( 3 1 hour). We show the re-sultsrnof the ambiguity resolution of two baselines havingrna length of 5 m and 6.6 km, respectively.
机译：俄罗斯GLONASS和美国GPS的卫星星座和信号结构具有可比性。如果考虑参考帧，系统时间和卫星信号频率的差异，则可以对GPS数据进行类似的处理。最后一项导致了双差相位观测方程中的一个新项，并且可能破坏模糊度的整数性质。这个新项取决于所涉及的两个卫星的波长差和初始正弦差模糊度的误差。为了解决新项，我们使用迭代歧义解法算法，求解一个双差歧义歧义迭代步骤。在第一步迭代中，具有最小均方根误差的模糊度分别为。如果满足某些条件，两颗卫星的最小波长差将固定为整数。每个具有不同波长的卫星对的每个成功解决的双差模糊度都将在下一迭代步骤中提高单精度模糊度的精度。因此，新的项随着它的每步迭代而变得越来越小，这最终应该可以解决所有卫星对的双差歧义。该算法主要适用于长时间会话（3 1小时）的静态GLONASS / GPSrn处理。我们显示了结果分别为两个长度分别为5 m和6.6 km的基线的歧义分辨率。

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