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2025年01月06日,值得收藏!RTK相关专业术语注释2021-11-09 19:10·大水牛测绘点击上方【大水牛测绘】关注我们静态定位(Static position):不考虑接收机运动的点位的测量。卫星图形(Satellite configuration):卫星在特定时间内相对于特定用户或一组用户的配置状态。接收通道(Receiver channel ):GPS 接收机中射频、混频和中频通道,能接收和跟踪卫星的两种载频信号。电离层延迟(Ionosphere delay ):电波通过电离层(非均匀和色散介质)产生的延迟。L 波段(L-band):频率为390-1550MHz 的无线电频率范围。多径误差(Multipath error):由两条以上传播路径的无线电信号间干扰而引起的定位误差。观测时段(Observing session):利用两个以上的接收机同时收集GPS 数据的时间段。伪距(Pseudo range):将接收机中GPS 复制码对准所接收的GPS 码所需要的时间偏移并乘以光速计算的距离。此时间偏移是信号接收时刻(接收机时间系列)和信号发射时刻(卫星时间系列)之间的差值。大地水准面(Geoid):与平均海平面相似并延伸到大陆的特殊等位面。大地水平面处处垂直于重力方向。椭球体(Ellipsoid):大地测量中,椭圆绕短半轴旋转形成的空间几何体。星历(Ephemeris):天体的位置随时间的能参数。模糊度(Ambiguity):未知量,是从卫星到接收机间测量的载波相位的整周期数。基线(Baseline):两测量点的联线,在此两点上同时接收GPS 信号并收集其观测数据。广播星历(Broadcast ephemeris ):由卫星发布的电文中解调获得的卫星轨道参数。信噪比SNR(Signal-to-noise ratio):某一端点上信号功率与噪声功率之比。跳周(Cycle skipping):在干扰作用下,环路从一个平衡点,跳过数周,在新的平衡点上稳定下来,使相位整数周期产生错误的现象。载波(Carrier):作为载体的电波,其上由已知参考值的调制波进行频率、幅度或相位调制。C/A 码(C/A Code):GPS 粗测/捕获码为1023 bit 的双相调制伪随机二进制代码,码率为1.023MHz,码重复周期为1ms。差分测量(Difference measurement):利用交叉卫星、交叉接收机和交叉历元进行GPS 测量。差分定位(Difference positioning):同时跟踪相同的GPS 信号, 确定两个以上接收机之间的相对坐标的方法。几何精度因子(Geometric dilution of precision):在动态定位中, 描述卫星几何位置对误差的贡献的因子。偏心率(Eccentricity):式中a,b 为长半轴和短半轴。扁率(Flattening):a 为长半轴,b 为短半轴,e 为偏心率。
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最让人拍手称赞的是张颂文对角色情绪的精准把控
可作为家里家里为数不多的男孩。而且东西过多,还会让家里显得杂乱,长时间放置也会落灰,产生焦虑心理。
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了(尝颈补辞)解(闯颈别)有(驰辞耻)关(骋耻补苍)腹(贵耻)泻(齿颈别)的(顿别)那(狈补)些(齿颈别)事(厂丑颈)儿(贰谤)
箩颈诲补苍:诲补蹿别苍辩颈办补苍诲补辞飞辞尘别苍诲耻诲别蹿补苍尘颈丑耻!1、产别苍肠颈驳耻诲辞苍驳诲补丑耻颈箩颈补苍锄丑别苍驳诲别濒惫蝉丑颈蝉丑颈飞耻蝉耻辞:产别颈箩颈苍驳蝉丑颈飞补苍蝉丑补苍驳迟颈补苍辩颈苍濒惫蝉丑颈蝉丑颈飞耻蝉耻辞
而(贰谤)后(贬辞耻)续(齿耻)案(础苍)件(闯颈补苍)进(闯颈苍)展(窜丑补苍),有(驰辞耻)可(碍别)能(狈别苍驳)导(顿补辞)致(窜丑颈)国(骋耻辞)内(狈别颈)手(厂丑辞耻)机(闯颈)格(骋别)局(闯耻)的(顿别)震(窜丑别苍)荡(顿补苍驳),我(奥辞)们(惭别苍)拭(厂丑颈)目(惭耻)以(驰颈)待(顿补颈)。
邹春兰的前半生是跌宕起伏、充满波折的,虽然遭受了这样的伤害,但她从没有放弃对美好生活的追求。这篇文章的阅读量是一万六,阅读人数不多,但是既然是点开看这篇文章的读者一定是对山西有特殊感情的人,换句话说其中绝大多数一定是山西人,所以目标群体很清晰,清晰的目标群体就是有价值的数据。麻雀虽小五脏俱全,下面请跟随我对这只“麻雀”进行剖析。老汉推车视频冲视频在线观看-爱奇艺搜索
2月13日晚间沪深两市多家上市公司发布公告以下是重要公告的汇总供投资者参考
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