【摘 要】
：
A BeiDou/GPS indirectfusion process method based on double-difference data was proposed in this article.Based on the multi-mode navigation data from the 6 inter
论文部分内容阅读
A BeiDou/GPS indirectfusion process method based on double-difference data was proposed in this article.Based on the multi-mode navigation data from the 6 internal stations and 10 foreign stations of M-GEX (The IGS Multi-GNSS GlobalExperiment) combined with the GPS data from 120 IGS stations,anaccuracyverification testof orbit determination was developed.The results show that the accuracy of satellite orbit overlap is about 10cm in radial directionfor BeiDou IGSO.For MEO the accuracy is 15cm in radial direction and for GEO is about 20cm.The orbit RMS for GPS satellite is about 2cm by comparing with IGS final products.
其他文献
The structure designing of satellite clock correction,ephemeris and system time parameters in navigation message directly affects navigating performance such as
自1987年4月至12月,我院以针灸配合电振动疗法治疗“月经过期者”200例,现将其效果和体会介绍如下。资料与方法一、治疗对象:200例就诊时疑早孕要求人流,而妊娠试验均为阴性
本研究报道一例累及皮质软脑膜异常强化的视神经脊髓炎谱系疾病（NMOSD）患者，临床表现为反复视神经炎和脊髓炎，经糖皮质激素免疫性治疗后临床症状和影像学均明显改善。这种表现为
食用植物油1-8月,我国共进口食用植物油431.6万吨,同比下降16.3%;进口值为36.1亿美元,与去年同期持平。从2月份开始,我国食用植物油进口量连续7个月同比下降
From January t
神经衰弱过去一向认为是常见病,随着近三十年来神经衰弱概念的变迁,提出了不少值得深思的问题,再加上我国学者对神经衰弱积累了很多经验及体会。为此,组织国内有关专家学者,
Joint space‐time adaptive process(STAP) is an advanced interference suppression method for GNSS receiver.The STAP method based on power inversion(PI) and beam
氯乙烯单体(VCM)主要用于合成聚氯乙烯,制造聚氯乙烯塑料。已被广泛的应用于现代工农业和国防工业,与人民生活也极为密切。目前国际癌症研究机构(IARC)已正式将氯乙烯列为对
世博会是大资本、新技术的比拼场,而由16家行业佼佼者组成的民企联合馆的亮相,则有着更多深意。它是如何意外诞生的?
World Expo is a big capital, new technology competi
【摘 要】近年来，随着社会经济的快速发展，工业、交通运输业、餐饮业的大量增加，有害污染物、烟尘、二氧化硫、氢氧化物、一氧化碳、碳氢化合物等排放到大气环境中造成大气污染，严重危害人们生活、生产及健康。为了改善人民群众的生活环境，提高城区大气环境质量，满足当代人生活需要，加强大气污染治理，走可持续发展道路，本文分析了大气污染原因及特点，针对大气污染的防治提出了几点可行性建议。 【关键词】大气污染；防