【摘 要】
:
Compared with the current multi-step method to solve the coordinate of the transponder, the combined solution of GNSS observation data and acoustic observation data is more consistent with the actual
【机 构】
:
Information Engineering University, 450001, Zhengzhou, China
论文部分内容阅读
Compared with the current multi-step method to solve the coordinate of the transponder, the combined solution of GNSS observation data and acoustic observation data is more consistent with the actual operation state, but if the error of attitude angle cannot be eliminated in the process of coordinate transformation, the accuracy of the transponder positioning will be seriously affected. Aiming at this shortcoming, based on the proposed GNSS/ acoustic joint positioning model in this paper, the attitude angle is used as the parameter to be estimated to participate in the filtering solution, and the filtering effect of the new model is verified by simulation and experimental data in this paper. The results show that: after the attitude parameters’ adding into the filtering model for estimation, the results of the three-dimensional coordinate error of the transponder are improved in varying degrees, and when the range of attitude error is larger, the improvement effect is more obvious.
其他文献
The BDS-3 basic system has already been established, starting to provide global service. As a new generation navigation system, the BDS-3 adopts a global ionospheric model, called BDGIM. Single-freque
Earth Rotation Parameter (ERP) is one of the most important parameters in the area of positioning and navigation, autonomous orbit determination and Earth reference framework. However, due to the rest
Adaptive antenna array technology used to improve the anti-jamming ability of navigation receiver now. Inversion process in adaptive antenna array anti-jamming is complicated in FPGA, which takes up a
Given the communication features of STDMA among inter-satellite links, this the-sis proposed a hierarchical planning method for the inter-satellite links network of navigation constellation. First, we
The GNSS signals are vulnerable to radio frequency interferences. Among these interferences, continuous wave interferences (CWIs) are able to jam the GNSS signals. After pulse-modulation, the CWIs fur
In this paper, we systematically discussed and analyzed the uncertainties of four typical time transfer links, including the satellite-ground two-way link, the satellite-ground lambda link, the ground
This paper focuses on the approach to attitude estimation. When describing the attitude of a dynamic object, the quaternion has a better numerical continuity and stability compared with other conventi
The message service is the most distinctive part of the BeiDou System (BDS), whose coverage area will be expanded from China & surroundings to the global surface space at BDS-3 stage. This is an innov
Snowfall is an important freshwater resource; manual monitoring and laser detection can monitor snow to a certain extent, but there is a lot of uncertainty in time and space.Traditional ground-based g
This Soil moisture is an important part of the surface water cycle. Effective monitoring of soil moisture is of great significance for weather forecasting, flood forecasting and crop growth. Existing