International Geomagnetic Reference Field (IGRF) - Revision history

Yash at 10:51, 23 February 2018

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Yash at 02:17, 8 February 2018

2018-02-08T02:17:54Z

Yash at 02:17, 8 February 2018

2018-02-08T02:17:32Z

Yash at 02:17, 8 February 2018

2018-02-08T02:17:11Z

Yash at 22:51, 24 January 2018

2018-01-24T22:51:03Z

Yash at 22:50, 24 January 2018

2018-01-24T22:50:33Z

Yash at 22:50, 24 January 2018

2018-01-24T22:50:13Z

Yash: Created page with "Earth has its own magnet which is about tilted by about 11 degrees from the axis passing through the north and south poles. It is made of molten metals and it is changing cont..."

2018-01-24T22:49:49Z

Created page with "Earth has its own magnet which is about tilted by about 11 degrees from the axis passing through the north and south poles. It is made of molten metals and it is changing cont..."

New page

Earth has its own magnet which is about tilted by about 11 degrees from the axis passing through the north and south poles. It is made of molten metals and it is changing continuously but slowly that’s why IGRF model is updated in every five years. IGRF model is created by International Association of Geomagnetism and Aeronomy (IAGA using satellites and some observatories. The cool fact about the Earth’s magnetic field is that because of it, we are alive. Yeah! This shield blocks the dangerous cosmic radiation (energetic protons) coming from the Sun. (HOW? <ref>http://ctaps.yu.edu.jo/physics/Courses/Phys102/Phys102_Web_Resources/Mag_field.htm<\ref>)
[[File:MagneticField.png|frame|center]]
The IGRF model provides magnetic field vector in NED (North East Down) frame at any given latitude, longitude and altitude. <br \>
Position of the satellite can be taken from the propagator model and fed into the IGRF model (appropriate conversion is required from ECI to NED frame) and the IGRF model will give magnetic field vector. Magnetic field vector is important for magnetometer sensor and magneto-torquer actuator. <br \>
Other than IGRF, there are some other models such as World Magnetic Model (WMM).<ref> https://www.ngdc.noaa.gov/geomag/WMM/DoDWMM.shtml.</ref>The difference between WMM and IGRF [12] is that WMM is valid for less number of years but more accurate as it is produced by dedicated agencies like NCEI and BGS for US and UK defense purposes.<br \> <br \>
If you are done reading this page, you can go back to [[Attitude Determination and Control Subsystem]].

== References ==

@@ Line 1: / Line 1: @@
 Earth has its own magnet which is about tilted by about 11 degrees from the axis passing through the north and south poles. It is made of molten metals and it is changing continuously but slowly that’s why IGRF model is updated in every five years. IGRF model is created by International Association of Geomagnetism and Aeronomy (IAGA using satellites and some observatories. The cool fact about the Earth’s magnetic field is that because of it, we are alive. Yeah! This shield blocks the dangerous cosmic radiation (energetic protons) coming from the Sun. [http://ctaps.yu.edu.jo/physics/Courses/Phys102/Phys102_Web_Resources/Mag_field.htm HOW?]
-[[File:EMF.png|frame|center]]
+[[File:EMF.png|frame|center|Earth's magnetic field. Image reproduced from [https://commons.wikimedia.org/wiki/File:Earth%27s_magnetic_field,_schematic.svg here]]]
 The IGRF model provides magnetic field vector in NED (North East Down) frame at any given latitude, longitude and altitude. <br \>
 Position of the satellite can be taken from the propagator model and fed into the IGRF model (appropriate conversion is required from ECI to NED frame) and the IGRF model will give magnetic field vector. Magnetic field vector is important for magnetometer sensor and magneto-torquer actuator. <br \>

@@ Line 1: / Line 1: @@
-Earth has its own magnet which is about tilted by about 11 degrees from the axis passing through the north and south poles. It is made of molten metals and it is changing continuously but slowly that’s why IGRF model is updated in every five years. IGRF model is created by International Association of Geomagnetism and Aeronomy (IAGA using satellites and some observatories. The cool fact about the Earth’s magnetic field is that because of it, we are alive. Yeah! This shield blocks the dangerous cosmic radiation (energetic protons) coming from the Sun. HOW?<ref>http://ctaps.yu.edu.jo/physics/Courses/Phys102/Phys102_Web_Resources/Mag_field.htm<\ref>
+Earth has its own magnet which is about tilted by about 11 degrees from the axis passing through the north and south poles. It is made of molten metals and it is changing continuously but slowly that’s why IGRF model is updated in every five years. IGRF model is created by International Association of Geomagnetism and Aeronomy (IAGA using satellites and some observatories. The cool fact about the Earth’s magnetic field is that because of it, we are alive. Yeah! This shield blocks the dangerous cosmic radiation (energetic protons) coming from the Sun. [http://ctaps.yu.edu.jo/physics/Courses/Phys102/Phys102_Web_Resources/Mag_field.htm HOW?]
 [[File:MagneticField.png|frame|center]]
 The IGRF model provides magnetic field vector in NED (North East Down) frame at any given latitude, longitude and altitude. <br \>

@@ Line 1: / Line 1: @@
-Earth has its own magnet which is about tilted by about 11 degrees from the axis passing through the north and south poles. It is made of molten metals and it is changing continuously but slowly that’s why IGRF model is updated in every five years. IGRF model is created by International Association of Geomagnetism and Aeronomy (IAGA using satellites and some observatories. The cool fact about the Earth’s magnetic field is that because of it, we are alive. Yeah! This shield blocks the dangerous cosmic radiation (energetic protons) coming from the Sun. (HOW?)<ref>http://ctaps.yu.edu.jo/physics/Courses/Phys102/Phys102_Web_Resources/Mag_field.htm<\ref>
+Earth has its own magnet which is about tilted by about 11 degrees from the axis passing through the north and south poles. It is made of molten metals and it is changing continuously but slowly that’s why IGRF model is updated in every five years. IGRF model is created by International Association of Geomagnetism and Aeronomy (IAGA using satellites and some observatories. The cool fact about the Earth’s magnetic field is that because of it, we are alive. Yeah! This shield blocks the dangerous cosmic radiation (energetic protons) coming from the Sun. HOW?<ref>http://ctaps.yu.edu.jo/physics/Courses/Phys102/Phys102_Web_Resources/Mag_field.htm<\ref>
 [[File:MagneticField.png|frame|center]]
 The IGRF model provides magnetic field vector in NED (North East Down) frame at any given latitude, longitude and altitude. <br \>

@@ Line 3: / Line 3: @@
 The IGRF model provides magnetic field vector in NED (North East Down) frame at any given latitude, longitude and altitude. <br \>
 Position of the satellite can be taken from the propagator model and fed into the IGRF model (appropriate conversion is required from ECI to NED frame) and the IGRF model will give magnetic field vector. Magnetic field vector is important for magnetometer sensor and magneto-torquer actuator. <br \>
-Other than IGRF, there are some other models such as World Magnetic Model (WMM).<ref>  https://www.ngdc.noaa.gov/geomag/WMM/DoDWMM.shtml.</ref> The difference between WMM and IGRF<ref>https://www.ngdc.noaa.gov/geomag/faqgeom.shtml#What_is_the_difference_between_IGRF_and_WMM_models</ref> is that WMM is valid for less number of years but more accurate as it is produced by dedicated agencies like NCEI and BGS for US and UK defense purposes.<br \> <br \>
+Other than IGRF, there are some other models such as World Magnetic Model (WMM).<ref>  https://www.ngdc.noaa.gov/geomag/WMM/DoDWMM.shtml.</ref> The difference between WMM and IGRF<ref>https://www.ngdc.noaa.gov/geomag/faqgeom.shtml#What_is_the_difference_between_IGRF_and_WMM_models</ref> is that WMM is valid for less number of years but more accurate as it is produced by dedicated agencies like NCEI and BGS for US and UK defense purposes.
 If you are done reading this page, you can go back to [[Attitude Determination and Control Subsystem]].
 == References ==