Asset Details
Do you wish to reserve the book?
GNSS时间序列中随机漫步消噪的改进半软阈值算法及其评估
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
GNSS时间序列中随机漫步消噪的改进半软阈值算法及其评估
Do you wish to request the book?
GNSS时间序列中随机漫步消噪的改进半软阈值算法及其评估
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
GNSS时间序列中随机漫步消噪的改进半软阈值算法及其评估
2016
Overview
全球导航卫星定位系统在卫星定轨和信号质量等方面存在的差异性,造成GNSS时间序列中的随机漫步噪声十分复杂,已经成为制约GNSS技术在高精度变形监测行业领域深入应用的瓶颈。本文针对具有量级小、频率低、敏感性差等复杂特征的随机漫步噪声,提出了一种改进的半软阈值算法,通过引入可变因子形成了统一的半软阈值函数体系,提高了常规半软阈值对随机漫步噪声的适应性。为了验证和评估改进半软阈值算法的效果,利用MATLAB平台仿真生成有线性趋势项、年周期项和随机漫步噪声的GNSS时间序列,共1700个历元。结果表明,改进的半软阈值法较经典方法在信噪比和均方根误差上表现出更加优良的性能。自相关分析的评估结果表明,改进方法所消除的噪声与随机漫步噪声在形态特征上具有高度的一致性。谱指数分析评估结果,进一步从定量角度验证了改进方法对随机漫步噪声的特有适用性。
Publisher
武汉理工大学资源与环境工程学院,湖北 武汉430070,香港理工大学土地测量与地理资讯学系,香港 999077%武汉理工大学资源与环境工程学院,湖北 武汉,430070%武汉大学测绘学院,湖北 武汉,430079%香港理工大学土地测量与地理资讯学系,香港,999077
Subject
We currently cannot retrieve any items related to this title. Kindly check back at a later time.