The observational measures of the sins / dtu are the velocity ' s differences between sins and dtu , and the sins / dtu also adopts a closed kalman filter to estimate and correct the errors 用捷联惯导系统解算出的速度和里程计所测量的速度之差作为观测量，利用闭环卡尔曼滤波技术进行误差估计与校正，并给出了仿真结果。
It really makes the information from different sensors complementary . the results indicate that the method not only dose a great improvement to local tracker ’ s performance but also improves the global tracking precision 该方法将包含速度信息的观测量进行分离组合,构成红外传感器的伪测量向量,真正实现了信息的优势互补,有效利用。
The observed quantity of the sins / od is the velocity ' s differences between sins and od , and the sins / od also adopts a closed kalman filter to estimate and correct the errors 用捷联惯导系统解算出的速度量和里程计所测量的速度量之差作为组合导航系统卡尔曼滤波器的观测量，利用闭环卡尔曼滤波技术进行误差估计与校正，并给出了系统仿真结果。
The improved schemes with adding pseudo satellites based on the actuality to get more observed quantities are presented in this paper and optimum layout of the pseudo satellites is also pointed out 通过仿真对三星定位系统的gdop特点进行了研究。本文提出在现有双星系统基础上增加伪卫星伪距观测量的改进方案,并对方案中的伪卫星进行最佳配置。
As a result , the current realization of svlbi cannot be considered as an ‘ extension ’ to the traditional ground - based geodetic vlbi , as was often assumed in the early studies ( fejes et al . 1996 , and references therein ) 该国际科研小组采用地面和空间vlbi ( vsop )的延迟和延迟率等实际观测量,对于大地测量和地球动力学的几个方面进行了研究。
In the thesis , i introduce the theory and application of gps carrier phase measurement , analyze the errors in the observation of gps signal , study the ways to reduce these errors , specially for the error caused by multipath 论文介绍了gps载波相位测量技术的原理和应用，分析了gps观测量的误差，研究了减小和消除各种误差的方法，重点是减小多径效应的影响。
Recently , with the development of gps , many researchers pay attention to the aircraft ' s precise entrance and landing through gps carrier phase measurement . the key technology of aircraft ' s precise entrance and landing is gps carrier phase integer ambiguity resolution on the fly 近年来，随着gps的发展和完善，利用gps载波相位观测量实现飞机的精密进场与着陆的研究，开始受到人们的关注，而载波相位整周模糊度的动态确定是其中的关键技术。
Selecting the image elements of earth and moon centers as observed quantity , measurement noise model and observed equations of autonomous navigation system are built up . the spacecraft orbit is determined by using the recursive weighted least square based on ud factorization 在奔选取地心和月心像素作为观测量,建立了符合实际情况的量测噪声模型和自主导航系统的观测方程,并利用基于ud分解的递推加权最小二乘算法估计了奔月探测器的轨道参数。
Secondly , based on the existing international technologic analysis , two different measurement schemes are proposed . one navigation scheme uses pixels as measurements vector , and the other one uses line of sight ( los ) of object celestial body and angles from probe to object body as the measurements vector 其次,通过对国际上现有技术的分析,给出两种不同的导航观测方案:一是利用图像作为观测量的自主导航;二是利用视线方向及夹角作为观测量的自主导航。
The isospin effect and k production in intermediate and high energy heavy ion collisions ( hics ) are hot topics in the nuclear physics . based on the isospin - dependent quantum molecular dyanmics ( iqmd ) model and self - consistent relativistic boltzmann - uehling - uhlenbeck ( rbuu ) model , we have studied them and obtained some interesting results . as for the study of isospin in intermediate energy hics , we ' ve investigated how both stength ( q ) and density dependence of symmetry potential ( sp ) affect many measurable observables , such as the yield , phase - space , and isospin distributions of fragments , as well as the correlations between intermediate - mass - fragment ( imf ) multiplicity n and charged - particle multiplicity n , , light - charged - particle ( lcp ) multiplicity n , and neutron multiplicity n , 在中能重离子碰撞的同位旋研究方面，分别研究了对称势的强度( c _ s )和其密度依赖形式对中能重离子核反应各类碎片产物产额、相空间、及其同位旋的分布，中等质量碎片多重数( n _ ( imf ) )与带电粒子多重数( n _ c ) 、轻带电粒子多重数( n _ k ) 、中子多重数( n _ n )的关联等多种实验观测量的影响，以获取对称势中该两方面的信息，尤其着重于研究如何分别获取有关该两方面的信息的途径。
