1. 来自STK官网的解释
主要信息来源:https://help.agi.com/stk/
STK在线帮助版本:12.0
Google在线翻译,有补充。
1.1 Sensor(传感器)
Sensor performance is a major concern for satellite system engineers and integrators. Sensors can be used to represent such equipment as optical or radar sensors, receiving or transmitting antennas, and lasers. The sensor object can also be useful for defining another object's field of view. Sensors are children of vehicles, facilities and targets. The sensor object can also have children of its own.
传感器性能是卫星系统工程师和集成商关注的主要问题。传感器可用于表示光学或雷达传感器、接收或发射天线和激光器等设备。传感器对象也可用于定义针对另一个对象的视野。传感器是车辆、设施和目标对象的子节点(传感器本身不能作为场景的子节点)。传感器对象也可以有自己的子节点,传感器的可能子节点包括:雷达、接收机、发射机、天线。
1.1.1 传感器基本属性
| roperty |
Description |
| Set parameters defining a sensor's field of view. 设置定义传感器视场的参数。包括七类传感器:
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| Position a sensor with respect to its parent object. 设置传感器相对于父对象的位置,有5种模式:
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| Set parameters to determine how a sensor is aimed, e.g. with respect to its parent object, the central body, objects selected for tracking, etc. 设置参数以确定传感器相对于其父对象、中心体、指定跟踪的目标等的指向/瞄准方式,包括:
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| Define an azimuth-elevation mask for the sensor. 为传感器定义方位仰角掩码。 |
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| Select a refraction model to constrain an atmosphere-based sensor's line of sight and elevation angles. 选择折射模型来约束基于大气的传感器的视线和仰角(大气折射)。 |
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| Define the resolution of the sensor in terms of focus and image quality. 根据焦点和图像质量定义传感器的分辨率。 |
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| Record useful information about the sensor. |
1.1.2 传感器约束(Constraints)属性
| Property |
Description |
| Impose minimum elevation and line-of-sight constraints on access from the sensor to another object. 对从传感器到另一个物体的访问施加最小仰角和视线限制。 |
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| Impose a variety of access constraints from the sensor to another object based on the position of the Sun and the Moon. 根据太阳和月亮的位置,对从传感器到另一个物体的各种访问限制。 |
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| Impose time-based access constraints from the sensor to another object. 从传感器到另一个物体施加基于时间的访问限制。 |
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| impose a variety of sensor-specific constraints. 施加各种传感器特定的约束。 |
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| Use inclusion and exclusion zones to define areas where access is or is not allowed. 使用包含区和排除区来定义允许或不允许访问的区域。 |
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| Limit access based on sensor characteristics and the quality of the inview. 根据传感器特性和考虑中的(inview)质量限制访问。 |
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STK是一款强大的航天动力学和通信分析软件,其核心组件之一是传感器建模。传感器包括多种类型,如光学、雷达和激光器,具有定义视场、位置、指向和约束等属性。雷达作为传感器的子类,增加了特定的建模参数,如SAR和搜索/跟踪功能。发射机和接收机则详细规定了信号发射和接收的参数,而天线模型关注其物理特性与指向。所有这些对象需放置在父节点如卫星、飞机等下,且可以设置环境、约束和RF属性来影响性能。
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