期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
应用波路计算提高折射法勘探资料解释精度
1
作者 王清玉 《人民长江》 北大核心 1992年第6期7-10,共4页
为提高地震折射法勘探精度,在推断的模型上,以炮点到接收点的路径计算弹性波的响应时间,画出的时距曲线与实测时距曲线进行比较,其吻合程度,说明资料解释精度。但因各种原因,解释精度不高,以永定河陈家庄水库溢洪道地段应用折射法勘探... 为提高地震折射法勘探精度,在推断的模型上,以炮点到接收点的路径计算弹性波的响应时间,画出的时距曲线与实测时距曲线进行比较,其吻合程度,说明资料解释精度。但因各种原因,解释精度不高,以永定河陈家庄水库溢洪道地段应用折射法勘探基岩起伏界面为例。所测原始资料采用Pc—1500计算机处理,直接输出结果,并对其解释结果经波路计算,提高了精度,如Z测线81—92测点,长110m,采用t_0法、哈里斯法及表层剥去法对原始资料分别进行三次可能的解释。t_0法和哈里斯法解释结果十分吻合。表层剥去法三次解释结果略有不同。经波路计算验证,表层剥去法第三次解释相对误差最小,最符合实际情况。并选定该结果为81~92测点段最终勘探成果。后经钻探验证,成果误差很小。 展开更多
关键词 地震折射 波路计算 地球物理勘探
下载PDF
Energy-Efficient Transceiver Design for Multi-Pair Two-Way Relay Systems 被引量:3
2
作者 Fei Zesong Li Na +1 位作者 Xing Chengwen Gong Shiqi 《China Communications》 SCIE CSCD 2015年第9期133-140,共8页
In this paper, we focus on energy-efficient transceiver and relay beamforming design for multi-pair two-way relay system. The multi-antenna users and the multi-antenna relay are considered in this work. Different from... In this paper, we focus on energy-efficient transceiver and relay beamforming design for multi-pair two-way relay system. The multi-antenna users and the multi-antenna relay are considered in this work. Different from the existing works, the proposed algorithm is energy-efficient which is more applicable to the future green network. It considers both the sum-MSE problem and the power consumption problem for the users under the relay power constraint. Based on the optimal condition decomposition(OCD) method, the energy-efficient precoders at the users can be designed separately with limited information exchanged. The proposed relay beamforming algorithm is based on the alternative direction method of multipliers(ADMM) which has simpler iterative solution and enjoys good convergence. Simulation results demonstrate the performance of the proposed algorithms in terms of power consumption and MSE performance. 展开更多
关键词 two-way relay energy efficient optimal condition decomposition alternative direction method of multipliers
下载PDF
High-efficiency calculation method for watershed rainfallrunoff routing using one-dimensional dynamic wave equations
3
作者 LI Jun GUO Xiao-jun ZHAO Ling-ling 《Journal of Mountain Science》 SCIE CSCD 2017年第10期2097-2105,共9页
Efficiency in solving the Saint-Venant equations for watershed rainfall-runoff routing is important in flood hydrology. This paper presents a high-efficiency numerical solution of one-dimensional dynamic wave equation... Efficiency in solving the Saint-Venant equations for watershed rainfall-runoff routing is important in flood hydrology. This paper presents a high-efficiency numerical solution of one-dimensional dynamic wave equations(HEDWE) for watershed rainfall-runoff routing, in which the full momentum equation is written as a quadratic equation with only one unknown variable Q, water depth is derived from the continuity equation using the two-step predictorcorrector method, and the discrete scheme is the explicit upwind scheme. The results of numerical tests showed the HEDWE approach has several major advantages. 1) It is a stable numerical method, even for an initially dry area. 2) Its computational efficiency is higher than 4.76E+05 times/s. 3) It can be used for overland flow, river flow, and combinations thereof. The primary disadvantages of the HEDWE approach are its unsuitability for rapidly varying flow, such as dam-break floods. 展开更多
关键词 Dynamic wave Flood routing Channel routing Overland flow
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部