2017 GPS Solut: Impacts of BeiDou stochastic model on reliability: overall test, w-test and minimal detectable biasLi Bofeng, Zhang Lei, Verhagen SandraExtensive studies have concluded that the GNSS observations are heteroscedastic and physically correlated. Typically, the observation precisions are elevation dependent and between-frequency cross-correlations and time correlations exi...
2017 Geod Geodyn: Comparison and analysis of unmodelled errors in GPS and BeiDou signalsZhang Zhetao, Li Bofeng, Shen Yunzhong, Yang LingExtensive studies on signal noise analysis of Global Navigation Satellite Systems (GNSS) receivers are mainly based on zero and/or short baselines where a pair of receivers is required. This paper develops a new signal noise assessment method for a...
2017 Acta Geod Geophys: A noise analysis method for GNSS signals of a standalone receiverZhang Zhetao, Li Bofeng, Shen Yunzhong, Yang LingExtensive studies on signal noise analysis of Global Navigation Satellite Systems (GNSS) receivers are mainly based on zero and/or short baselines where a pair of receivers is required. This paper develops a new signal noise assessment method for a ...
2017 GPS Solut: Impact of GPS differential code bias in dual- and triple-frequency positioning and satellite clock estimationLi Haojun, Li Bofeng, Lou Lizhi, Yang Ling, WanThe features and differences of various GPS differential code bias (DCB)s are discussed. The application of these biases in dual- and triple-frequency satellite clock estimation is introduced based on this discussio...
2017 Stu G: Multiple linear regression with correlated explanatory variables and responsesFang Xing, Li Bofeng, Wang Miaomiao, Alkhatib Hamza, Zeng Wenxian, Yao YibinN YAO1We discuss the Bayesian inference based on the Errors-In-Variables (EIV) model. The proposed estimators are developed not only for the unknown parameters but also for the variance factor with or without prior inform...
2017 SR: Multiple linear regression with correlated explanatory variables and responsesLi Bofeng, Wang MiaomiaoDifferent from the traditional linear regression model that captures only the errors of dependent variables (responses), this contribution presents a new multiple linear regression model where, besides the errors of responses, the errors of explanatory variables and their cor...
2017 GPS Solut: Optimal Doppler-aided smoothing strategy for GNSS navigationZhou, Bofeng LiLCarrier-phase-smoothed code (CPSC), i.e., smoothing of the code using carrier phases, has widely been used to reduce the code noise in GNSS applications. However, the efficiency of CPSC suffers significantly from cycle slips, interruptions and jitters. The GNSS Doppler, as an instantaneous me...
2016 Acta Geod Geophys : A noise analysis method for GNSS signals of a standalone receiver. Zhang Zhetao, Li Bofeng, Shen Yunzhong, Yang LingExtensive studies on signal noise analysis of Global ...
2016 测绘学报 无缝线性回归与预测模型 王苗苗， 李博峰回归模型的建立传统地采用最小二乘方法并忽略自变量观测误差。
2016 同济大学学报: 顾及自变量与因变量误差及相关性的线性回归 王苗苗，李博峰，沈云中提出一种顾及自变量和因变量观测误差及误差相关性的线性回归新方法，并导出了求解线性回归系数的迭代公式。
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