argument of perigee

简明释义

近地点角距

英英释义

例句

1.The mission planners reviewed the argument of perigee to ensure the satellite would pass over the target area.

任务规划者审查了近地点参数以确保卫星将经过目标区域。

2.To predict the satellite's position accurately, engineers must calculate the argument of perigee along with other orbital elements.

为了准确预测卫星的位置，工程师必须计算近地点参数以及其他轨道元素。

3.The argument of perigee is crucial for understanding how the satellite will interact with atmospheric drag.

近地点参数对于理解卫星如何与大气阻力相互作用至关重要。

4.During the launch, the argument of perigee was adjusted to optimize the satellite's trajectory.

在发射过程中，调整了近地点参数以优化卫星的轨迹。

5.The satellite's orbit is defined by several parameters, including the argument of perigee, which determines the angle of closest approach to Earth.

卫星的轨道由几个参数定义，包括近地点参数，它决定了与地球最近接触的角度。

作文

In the study of celestial mechanics, understanding the orbits of celestial bodies is crucial. One important aspect of an orbit is its shape and orientation, which can be described using several parameters. Among these parameters, the argument of perigee plays a significant role. The argument of perigee (近地点幅角) is defined as the angle between the ascending node of an orbit and the perigee, measured within the orbital plane. This concept is essential for comprehending the motion of satellites, planets, and other celestial objects as they travel around a primary body, such as Earth.To appreciate the significance of the argument of perigee, it is essential to understand what perigee is. Perigee refers to the point in an orbit where a satellite or celestial object is closest to the Earth. Conversely, apogee is the point where the object is farthest from the Earth. The argument of perigee helps us determine how elongated or circular an orbit is and where the closest approach occurs in relation to the ascending node.The argument of perigee is particularly important in satellite operations. For instance, communication satellites often have specific orbital requirements to maintain optimal coverage over certain areas on Earth. By adjusting the argument of perigee, engineers can ensure that the satellite maintains its position relative to the surface, providing consistent communication signals. Furthermore, understanding the argument of perigee allows scientists to predict potential collisions with other objects in space, as well as plan maneuvers to avoid such events.In addition to practical applications, the argument of perigee also has theoretical implications in astrodynamics. Researchers study the argument of perigee to gain insights into the gravitational interactions between celestial bodies. For example, when two bodies exert gravitational forces on each other, their orbits can change over time, leading to variations in the argument of perigee. This can result in phenomena such as orbital precession, where the orientation of an orbit shifts gradually over time.Moreover, the argument of perigee can be influenced by various factors, including atmospheric drag, gravitational perturbations from other celestial bodies, and even solar radiation pressure. These influences can cause the argument of perigee to vary, necessitating regular adjustments to satellite trajectories to maintain desired operational parameters.In conclusion, the argument of perigee is a fundamental concept in the field of celestial mechanics that describes the orientation of an orbit relative to the Earth. Its importance cannot be overstated, as it affects satellite positioning, collision avoidance, and our understanding of gravitational interactions in space. As we continue to explore the cosmos and deploy more satellites, a thorough grasp of the argument of perigee will remain vital for both practical applications and theoretical advancements in astrophysics.

在天体力学的研究中，理解天体的轨道至关重要。轨道的一个重要方面是其形状和方向，这可以通过几个参数来描述。在这些参数中，近地点幅角起着重要作用。近地点幅角（argument of perigee）被定义为轨道升交点与近地点之间的角度，该角度是在轨道平面内测量的。这个概念对于理解卫星、行星和其他天体在围绕主天体（如地球）运动时的行为至关重要。要理解近地点幅角的重要性，首先需要了解什么是近地点。近地点是指卫星或天体在其轨道上距离地球最近的点。相反，远地点是指该物体距离地球最远的点。近地点幅角帮助我们确定轨道的拉伸程度或圆形程度，以及最近接近发生在升交点的哪个位置。近地点幅角在卫星操作中尤为重要。例如，通信卫星通常具有特定的轨道要求，以保持对地球某些区域的最佳覆盖。通过调整近地点幅角，工程师可以确保卫星相对地表保持其位置，从而提供稳定的通信信号。此外，理解近地点幅角还使科学家能够预测与太空中其他物体的潜在碰撞，并计划规避这样的事件。除了实际应用外，近地点幅角在天体动力学中也具有理论意义。研究人员研究近地点幅角以深入了解天体之间的引力相互作用。例如，当两个天体相互施加引力时，它们的轨道可能会随时间变化，从而导致近地点幅角的变化。这可能导致轨道进动现象，即轨道的方向随着时间的推移逐渐变化。此外，近地点幅角可能受到多种因素的影响，包括大气阻力、其他天体的引力干扰，甚至太阳辐射压力。这些影响可能导致近地点幅角的变化，因此需要定期调整卫星轨迹以保持所需的操作参数。总之，近地点幅角是天体力学领域的一个基本概念，它描述了轨道相对于地球的方向。它的重要性不容小觑，因为它影响着卫星定位、碰撞避免以及我们对太空中引力相互作用的理解。随着我们继续探索宇宙并部署更多卫星，对近地点幅角的透彻掌握将仍然对实际应用和天体物理学的理论进步至关重要。