GPS Anti Spoof Pro 4+
Frank Reed
专为 iPad 设计
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- ¥148.00
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简介
Instantly compare observed celestial navigation altitudes with high precision, live calculated altitudes. Shoot the Sun, tap pause in the app, and get instant feedback.
Pro version of the app is for serious navigation use and includes data for the Sun, Moon, Venus, Mars, Jupiter. Saturn. the 57 standard navigational stars, plus Polaris. Pro version can function for weeks in the middle of the ocean without network access.
This app calculates the exact altitude that should be observed in celestial navigation at sea or on land assuming that the GPS position is correct. No paperwork is required, no tables of corrections. All corrections are included automatically: index error, system time error, dip of the horizon, refraction, temperature and pressure corrections to refraction, altitude above sea level, parallax, and also gravitational deflection of the vertical (a correction of up 2 nautical miles not handled by any other celestial navigation sight-clearing product) are all included automatically. If the GPS position is wrong, due to Spoofing at sea, observations will not match. With this app and occasional quick sextant sights, mariners can reliably detect GPS spoofing.
No GPS Spoofing? The app also functions as a celestial navigation trainer: take a sight and immediately compare against the app's display. No paperwork and instant feedback will improve celestial sextant skills in hours instead of days or weeks.
The app works off-network, even in the middle of the ocean. If a network connection is available, the app will download temperature and pressure information automatically. Or weather data can be entered manually, if desired.
The ephemeris data is generated from the same JPL numerical integrations of lunar and planetary motions used by the official Nautical Almanac and Astronomical Almanac. All coordinates are accurate to one second of arc, and displayed altitudes are accurate to a tenth of a minute of arc.
新内容
版本 1.0.33
Important maintenance update.
App 隐私
开发者“Frank Reed”已表明该 App 的隐私规范可能包括了下述的数据处理方式。有关更多信息,请参阅开发者隐私政策。
未收集数据
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隐私处理规范可能基于你使用的功能或你的年龄等因素而有所不同。了解更多
信息
- 提供者
- Frank Reed
- 大小
- 23.8 MB
- 类別
- 导航
- 兼容性
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- iPhone
- 设备需装有 iOS 11.0 或更高版本。
- iPad
- 设备需装有 iPadOS 11.0 或更高版本。
- iPod touch
- 设备需装有 iOS 11.0 或更高版本。
- Mac
- 需要 macOS 11.0 或更高版本以及装有 Apple M1 或更高版本芯片的 Mac。
- Apple Vision
- 设备需装有 visionOS 1.0 或更高版本。
- 语言
-
英语
- 年龄分级
- 4+
- Copyright
- © 2023 Clockwork Mapping, Conanicut Island USA
- 价格
- ¥148.00
支持
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家人共享
启用“家人共享”,即可让最多 6 个家庭成员使用此 App。