reaching 发表于 2025-3-26 21:21:51
Introduction and historical background,contrast to the three spatial coordinates which can increase or decrease, time always grows. The recent concept of 4-D guidance has special significance in coordinating flight paths such as in air traffic control or in space rendezvous operations, where the notions of ’here-now’ or ’there-then’ assume paramount importance.不公开 发表于 2025-3-27 01:40:15
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Inertial Rotation Sensors,re depicted in Figure 4.1. The transformation of any vector from Earth axes .., .., .. to body axes .., .., .. is performed by the Euler transformation =[Φ][Θ][Ψ], formulated in detail in Appendix A4.PTCA635 发表于 2025-3-27 14:07:13
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Introduction and historical background, . is generally defined in three dimensional space. Sometimes, on adding the fourth’dimension’, namely, time, a four-dimensional space is defined. In contrast to the three spatial coordinates which can increase or decrease, time always grows. The recent concept of 4-D guidance has special significangustation 发表于 2025-3-28 09:25:09
Principles and Elements of Measurement Systems,and their interconnections are described in generic form. Thus, a common conceptual framework is provided for a variety of existing aerospace sensors. The underlying requirements for standards and reference values are introduced, and the principal classes of measurement devices are defined, includin毁坏 发表于 2025-3-28 12:47:33
Random Processes and Signals,, which is based on traditional text, has been selected to serve in the solution of problems arising in aerospace applications and treating measurement and process noise in filtering, smoothing, and prediction operations. These, along with sensors, have often become an integral part of a measurement