diff --git a/dev/index.html b/dev/index.html index 7c4130d..4e987d8 100644 --- a/dev/index.html +++ b/dev/index.html @@ -1,3 +1,3 @@ Home · SatelliteToolboxAtmosphericModels.jl
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SatelliteToolboxAtmosphericModels.jl

This package implements atmospheric models for the SatelliteToolbox.jl ecosystem. Currently, the following models are available:

Installation

julia> using Pkg
-julia> Pkg.install("SatelliteToolboxAtmosphericModels")

References

  • [1] Vallado, D. A (2013). Fundamentals of Astrodynamics and Applications. 4th ed. Microcosm Press, Hawthorn, CA, USA.
+julia> Pkg.install("SatelliteToolboxAtmosphericModels")

References

diff --git a/dev/lib/library/index.html b/dev/lib/library/index.html index 7e1479f..2507d19 100644 --- a/dev/lib/library/index.html +++ b/dev/lib/library/index.html @@ -1,9 +1,9 @@ -Library · SatelliteToolboxAtmosphericModels.jl
Edit on GitHub

Library

Documentation for SatelliteToolboxAtmosphericModels.jl.

SatelliteToolboxAtmosphericModels.AtmosphericModels.JB2008Output — Type
struct JB2008Output{T<:Number}

Output of the atmospheric model Jacchia-Bowman 2008.

Fields

  • total_density::T: Total atmospheric density [1 / m³].
  • temperature::T: Temperature at the selected position [K].
  • exospheric_temperature::T: Exospheric temperature [K].
  • N2_number_density::T: Number density of N₂ [1 / m³].
  • O2_number_density::T: Number density of O₂ [1 / m³].
  • O_number_density::T: Number density of O [1 / m³].
  • Ar_number_density::T: Number density of Ar [1 / m³].
  • He_number_density::T: Number density of He [1 / m³].
  • H_number_density::T: Number density of H [1 / m³].
source
SatelliteToolboxAtmosphericModels.AtmosphericModels.JR1971Output — Type
struct JR1971Output{T<:Number}

Output of the atmospheric model Jacchia-Roberts 1971.

Fields

  • total_density::T: Total atmospheric density [1 / m³].
  • temperature::T: Temperature at the selected position [K].
  • exospheric_temperature::T: Exospheric temperature [K].
  • N2_number_density::T: Number density of N₂ [1 / m³].
  • O2_number_density::T: Number density of O₂ [1 / m³].
  • O_number_density::T: Number density of O [1 / m³].
  • Ar_number_density::T: Number density of Ar [1 / m³].
  • He_number_density::T: Number density of He [1 / m³].
  • H_number_density::T: Number density of H [1 / m³].
source
SatelliteToolboxAtmosphericModels.AtmosphericModels.Nrlmsise00Flags — Type
struct Nrlmsise00Flags

Flags to configure NRLMSISE-00.

Fields

  • F10_Mean::Bool: F10.7 effect on mean.
  • time_independent::Bool: Independent of time.
  • sym_annual::Bool: Symmetrical annual.
  • sym_semiannual::Bool: Symmetrical semiannual.
  • asym_annual::Bool: Asymmetrical annual.
  • asyn_semiannual::Bool: Asymmetrical semiannual.
  • diurnal::Bool: Diurnal.
  • semidiurnal::Bool: Semidiurnal.
  • daily_ap::Bool: Daily AP.
  • all_ut_long_effects::Bool: All UT/long effects.
  • longitudinal::Bool: Longitudinal.
  • ut_mixed_ut_long::Bool: UT and mixed UT/long.
  • mixed_ap_ut_long::Bool: Mixed AP/UT/long.
  • terdiurnal::Bool: Terdiurnal.
  • departures_from_eq::Bool: Departures from diffusive equilibrium.
  • all_tinf_var::Bool: All TINF variations.
  • all_tlb_var::Bool: All TLB variations.
  • all_tn1_var::Bool: All TN1 variations.
  • all_s_var::Bool: All S variations.
  • all_tn2_var::Bool: All TN2 variations.
  • all_nlb_var::Bool: All NLB variations.
  • all_tn3_var::Bool: All TN3 variations.
  • turbo_scale_height::Bool: Turbo scale height variations.
source
SatelliteToolboxAtmosphericModels.AtmosphericModels.Nrlmsise00Output — Type
struct Nrlmsise00Output{T<:Number}

Output structure for NRLMSISE00 model.

Fields

  • total_density::T: Total mass density [kg / m³].
  • temperature: Temperature at the selected altitude [K].
  • exospheric_temperature: Exospheric temperature [K].
  • N_number_density: Nitrogen number density [1 / m³].
  • N2_number_density: N₂ number density [1 / m³].
  • O_number_density: Oxygen number density [1 / m³].
  • aO_number_density: Anomalous Oxygen number density [1 / m³].
  • O2_number_density: O₂ number density [1 / m³].
  • H_number_density: Hydrogen number density [1 / m³].
  • He_number_density: Helium number density [1 / m³].
  • Ar_number_density: Argon number density [1 / m³].

Remarks

Anomalous oxygen is defined as hot atomic oxygen or ionized oxygen that can become appreciable at high altitudes (> 500 km) for some ranges of inputs, thereby affection drag on satellites and debris. We group these species under the term Anomalous Oxygen, since their individual variations are not presently separable with the drag data used to define this model component.

source
SatelliteToolboxAtmosphericModels.AtmosphericModels.exponential — Method
exponential(h::Number) -> Float64

Compute the atmospheric density [kg / m³] at the altitude h [m] above the ellipsoid using the exponential atmospheric model:

                ┌            ┐
+Library · SatelliteToolboxAtmosphericModels.jl
Edit on GitHub
Library
Documentation for SatelliteToolboxAtmosphericModels.jl.
SatelliteToolboxAtmosphericModels.AtmosphericModels.JB2008Output — Type
struct JB2008Output{T<:Number}
Output of the atmospheric model Jacchia-Bowman 2008.
Fields
  • total_density::T: Total atmospheric density [1 / m³].
  • temperature::T: Temperature at the selected position [K].
  • exospheric_temperature::T: Exospheric temperature [K].
  • N2_number_density::T: Number density of N₂ [1 / m³].
  • O2_number_density::T: Number density of O₂ [1 / m³].
  • O_number_density::T: Number density of O [1 / m³].
  • Ar_number_density::T: Number density of Ar [1 / m³].
  • He_number_density::T: Number density of He [1 / m³].
  • H_number_density::T: Number density of H [1 / m³].
source
SatelliteToolboxAtmosphericModels.AtmosphericModels.JR1971Output — Type
struct JR1971Output{T<:Number}
Output of the atmospheric model Jacchia-Roberts 1971.
Fields
  • total_density::T: Total atmospheric density [1 / m³].
  • temperature::T: Temperature at the selected position [K].
  • exospheric_temperature::T: Exospheric temperature [K].
  • N2_number_density::T: Number density of N₂ [1 / m³].
  • O2_number_density::T: Number density of O₂ [1 / m³].
  • O_number_density::T: Number density of O [1 / m³].
  • Ar_number_density::T: Number density of Ar [1 / m³].
  • He_number_density::T: Number density of He [1 / m³].
  • H_number_density::T: Number density of H [1 / m³].
source
SatelliteToolboxAtmosphericModels.AtmosphericModels.Nrlmsise00Flags — Type
struct Nrlmsise00Flags
Flags to configure NRLMSISE-00.
Fields
  • F10_Mean::Bool: F10.7 effect on mean.
  • time_independent::Bool: Independent of time.
  • sym_annual::Bool: Symmetrical annual.
  • sym_semiannual::Bool: Symmetrical semiannual.
  • asym_annual::Bool: Asymmetrical annual.
  • asyn_semiannual::Bool: Asymmetrical semiannual.
  • diurnal::Bool: Diurnal.
  • semidiurnal::Bool: Semidiurnal.
  • daily_ap::Bool: Daily AP.
  • all_ut_long_effects::Bool: All UT/long effects.
  • longitudinal::Bool: Longitudinal.
  • ut_mixed_ut_long::Bool: UT and mixed UT/long.
  • mixed_ap_ut_long::Bool: Mixed AP/UT/long.
  • terdiurnal::Bool: Terdiurnal.
  • departures_from_eq::Bool: Departures from diffusive equilibrium.
  • all_tinf_var::Bool: All TINF variations.
  • all_tlb_var::Bool: All TLB variations.
  • all_tn1_var::Bool: All TN1 variations.
  • all_s_var::Bool: All S variations.
  • all_tn2_var::Bool: All TN2 variations.
  • all_nlb_var::Bool: All NLB variations.
  • all_tn3_var::Bool: All TN3 variations.
  • turbo_scale_height::Bool: Turbo scale height variations.
source
SatelliteToolboxAtmosphericModels.AtmosphericModels.Nrlmsise00Output — Type
struct Nrlmsise00Output{T<:Number}
Output structure for NRLMSISE00 model.
Fields
  • total_density::T: Total mass density [kg / m³].
  • temperature: Temperature at the selected altitude [K].
  • exospheric_temperature: Exospheric temperature [K].
  • N_number_density: Nitrogen number density [1 / m³].
  • N2_number_density: N₂ number density [1 / m³].
  • O_number_density: Oxygen number density [1 / m³].
  • aO_number_density: Anomalous Oxygen number density [1 / m³].
  • O2_number_density: O₂ number density [1 / m³].
  • H_number_density: Hydrogen number density [1 / m³].
  • He_number_density: Helium number density [1 / m³].
  • Ar_number_density: Argon number density [1 / m³].
Remarks
Anomalous oxygen is defined as hot atomic oxygen or ionized oxygen that can become appreciable at high altitudes (> 500 km) for some ranges of inputs, thereby affection drag on satellites and debris. We group these species under the term Anomalous Oxygen, since their individual variations are not presently separable with the drag data used to define this model component.
source
SatelliteToolboxAtmosphericModels.AtmosphericModels.exponential — Method
exponential(h::Number) -> Float64
Compute the atmospheric density [kg / m³] at the altitude h [m] above the ellipsoid using the exponential atmospheric model:
                ┌            ┐
                 │    h - h₀  │
 ρ(h) = ρ₀ . exp │ - ──────── │ ,
                 │      H     │
-                └            ┘
in which ρ₀, h₀, and H are parameters obtained from tables that depend only on h.
source
SatelliteToolboxAtmosphericModels.AtmosphericModels.jb2008 — Method
jb2008(instant::DateTime, ϕ_gd::Number, λ::Number, h::Number[, F10::Number, F10ₐ::Number, S10::Number, S10ₐ::Number, M10::Number, M10ₐ::Number, Y10::Number, Y10ₐ::Number, DstΔTc::Number]) -> JB2008Output{Float64}
-jb2008(jd::Number, ϕ_gd::Number, λ::Number, h::Number[, F10::Number, F10ₐ::Number, S10::Number, S10ₐ::Number, M10::Number, M10ₐ::Number, Y10::Number, Y10ₐ::Number, DstΔTc::Number]) -> JB2008Output{Float64}
Compute the atmospheric density using the Jacchia-Bowman 2008 (JB2008) model.
This model is a product of the Space Environment Technologies, please, refer to the following website for more information:
http://sol.spacenvironment.net/JB2008/
If we omit all space indices, the system tries to obtain them automatically for the selected day jd or instant. However, the indices must be already initialized using the function SpaceIndices.init().
Arguments
  • jd::Number: Julian day to compute the model.
  • instant::DateTime: Instant to compute the model represent using DateTime.
  • ϕ_gd: Geodetic latitude [rad].
  • λ: Longitude [rad].
  • h: Altitude [m].
  • F10: 10.7-cm solar flux [sfu] obtained 1 day before jd.
  • F10ₐ: 10.7-cm averaged solar flux using a 81-day window centered on input time obtained   1 day before jd.
  • S10: EUV index (26-34 nm) scaled to F10.7 obtained 1 day before jd.
  • S10ₐ: EUV 81-day averaged centered index obtained 1 day before jd.
  • M10: MG2 index scaled to F10.7 obtained 2 days before jd.
  • M10ₐ: MG2 81-day averaged centered index obtained 2 day before jd.
  • Y10: Solar X-ray & Ly-α index scaled to F10.7 obtained 5 days before jd.
  • Y10ₐ: Solar X-ray & Ly-α 81-day averaged centered index obtained 5 days before jd.
  • DstΔTc: Temperature variation related to the Dst.
Returns
  • JB2008Output{Float64}: Structure containing the results obtained from the model.
source
SatelliteToolboxAtmosphericModels.AtmosphericModels.jr1971 — Method
jr1971(instant::DateTime, ϕ_gd::Number, λ::Number, h::Number[, F10::Number, F10ₐ::Number, Kp::Number]) -> JR1971Output{Float64}
-jr1971(jd::Number, ϕ_gd::Number, λ::Number, h::Number[, F10::Number, F10ₐ::Number, Kp::Number]) -> JR1971Output{Float64}
Compute the atmospheric density using the Jacchia-Roberts 1971 model.
If we omit all space indices, the system tries to obtain them automatically for the selected day jd or instant. However, the indices must be already initialized using the function SpaceIndices.init().
Arguments
  • jd::Number: Julian day to compute the model.
  • instant::DateTime: Instant to compute the model represent using DateTime.
  • ϕ_gd::Number: Geodetic latitude [rad].
  • λ::Number: Longitude [rad].
  • h::Number: Altitude [m].
  • F10::Number: 10.7-cm solar flux [sfu].
  • F10ₐ::Number: 10.7-cm averaged solar flux, 81-day centered on input time [sfu].
  • Kp::Number: Kp geomagnetic index with a delay of 3 hours.
Returns
  • JR1971Output{Float64}: Structure containing the results obtained from the model.
source
SatelliteToolboxAtmosphericModels.AtmosphericModels.nrlmsise00 — Method
nrlmsise00(instant::DateTime, h::Number[, ϕ_gd::Number, λ::Number, F10ₐ::Number, F10::Number, ap::Union{Number, AbstractVector}]; kwargs...) -> Nrlmsise00Output{Float64}
-nrlmsise00(jd::Number, h::Number[, ϕ_gd::Number, λ::Number, F10ₐ::Number, F10::Number, ap::Union{Number, AbstractVector}]; kwargs...) -> Nrlmsise00Output{Float64}
Compute the atmospheric density using the NRLMSISE-00 model.
If we omit all space indices, the system tries to obtain them automatically for the selected day jd or instant. However, the indices must be already initialized using the function SpaceIndices.init().
Arguments
  • instant::DateTime: Instant to compute the model represent using DateTime.
  • jd::Number: Julian day to compute the model.
  • h::Number: Altitude [m].
  • ϕ_gd::Number: Geodetic latitude [rad].
  • λ::Number: Longitude [rad].
  • F10ₐ::Number: 10.7-cm averaged solar flux, 90-day centered on input time [sfu].
  • F10::Number: 10.7-cm solar flux [sfu].
  • ap::Union{Number, AbstractVector}: Magnetic index, see the section AP for more   information.
Keywords
  • flags::Nrlmsise00Flags: A list of flags to configure the model. For more information,   see [Nrlmsise00Flags]@(ref). (Default = Nrlmsise00Flags())
  • include_anomalous_oxygen::Bool: If true, the anomalous oxygen density will be included   in the total density computation. (Default = true)
Returns
  • Nrlmsise00Output{Float64}: Structure containing the results obtained from the model.
AP
The input variable ap contains the magnetic index. It can be a Number or an AbstractVector.
If ap is a number, it must contain the daily magnetic index.
If ap is an AbstractVector, it must be a vector with 7 dimensions as described below:
IndexDescription
1Daily AP.
23 hour AP index for current time.
33 hour AP index for 3 hours before current time.
43 hour AP index for 6 hours before current time.
53 hour AP index for 9 hours before current time.
6Average of eight 3 hour AP indices from 12 to 33 hours prior to current time.
7Average of eight 3 hour AP indices from 36 to 57 hours prior to current time.
Extended Help
  1. The densities of O, H, and N are set to 0 below 72.5 km.
  2. The exospheric temperature is set to global average for altitudes below 120 km. The  120 km gradient is left at global average value for altitudes below 72.5 km.
  3. Anomalous oxygen is defined as hot atomic oxygen or ionized oxygen that can become  appreciable at high altitudes (> 500 km) for some ranges of inputs, thereby affection  drag on satellites and debris. We group these species under the term Anomalous  Oxygen, since their individual variations are not presently separable with the drag  data used to define this model component.
Notes on Input Variables
F10 and F10ₐ values used to generate the model correspond to the 10.7 cm radio flux at the actual distance of the Earth from the Sun rather than the radio flux at 1 AU. The following site provides both classes of values:
ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SOLAR_RADIO/FLUX/
F10, F10ₐ, and ap effects are neither large nor well established below 80 km and these parameters should be set to 150, 150, and 4 respectively.
If include_anomalous_oxygen is false, the total_density field in the output is the sum of the mass densities of the species He, O, N₂, O₂, Ar, H, and N, but does not include anomalous oxygen.
If include_anomalous_oxygen is false, the total_density field in the output is the effective total mass density for drag and is the sum of the mass densities of all species in this model including the anomalous oxygen.
source

+                └            ┘

in which ρ₀, h₀, and H are parameters obtained from tables that depend only on h.

source
SatelliteToolboxAtmosphericModels.AtmosphericModels.jb2008 — Method
jb2008(instant::DateTime, ϕ_gd::Number, λ::Number, h::Number[, F10::Number, F10ₐ::Number, S10::Number, S10ₐ::Number, M10::Number, M10ₐ::Number, Y10::Number, Y10ₐ::Number, DstΔTc::Number]) -> JB2008Output{Float64}
+jb2008(jd::Number, ϕ_gd::Number, λ::Number, h::Number[, F10::Number, F10ₐ::Number, S10::Number, S10ₐ::Number, M10::Number, M10ₐ::Number, Y10::Number, Y10ₐ::Number, DstΔTc::Number]) -> JB2008Output{Float64}

Compute the atmospheric density using the Jacchia-Bowman 2008 (JB2008) model.

This model is a product of the Space Environment Technologies, please, refer to the following website for more information:

http://sol.spacenvironment.net/JB2008/

If we omit all space indices, the system tries to obtain them automatically for the selected day jd or instant. However, the indices must be already initialized using the function SpaceIndices.init().

Arguments

  • jd::Number: Julian day to compute the model.
  • instant::DateTime: Instant to compute the model represent using DateTime.
  • ϕ_gd: Geodetic latitude [rad].
  • λ: Longitude [rad].
  • h: Altitude [m].
  • F10: 10.7-cm solar flux [sfu] obtained 1 day before jd.
  • F10ₐ: 10.7-cm averaged solar flux using a 81-day window centered on input time obtained 1 day before jd.
  • S10: EUV index (26-34 nm) scaled to F10.7 obtained 1 day before jd.
  • S10ₐ: EUV 81-day averaged centered index obtained 1 day before jd.
  • M10: MG2 index scaled to F10.7 obtained 2 days before jd.
  • M10ₐ: MG2 81-day averaged centered index obtained 2 day before jd.
  • Y10: Solar X-ray & Ly-α index scaled to F10.7 obtained 5 days before jd.
  • Y10ₐ: Solar X-ray & Ly-α 81-day averaged centered index obtained 5 days before jd.
  • DstΔTc: Temperature variation related to the Dst.

Returns

  • JB2008Output{Float64}: Structure containing the results obtained from the model.
source
SatelliteToolboxAtmosphericModels.AtmosphericModels.jr1971 — Method
jr1971(instant::DateTime, ϕ_gd::Number, λ::Number, h::Number[, F10::Number, F10ₐ::Number, Kp::Number]) -> JR1971Output{Float64}
+jr1971(jd::Number, ϕ_gd::Number, λ::Number, h::Number[, F10::Number, F10ₐ::Number, Kp::Number]) -> JR1971Output{Float64}

Compute the atmospheric density using the Jacchia-Roberts 1971 model.

If we omit all space indices, the system tries to obtain them automatically for the selected day jd or instant. However, the indices must be already initialized using the function SpaceIndices.init().

Arguments

  • jd::Number: Julian day to compute the model.
  • instant::DateTime: Instant to compute the model represent using DateTime.
  • ϕ_gd::Number: Geodetic latitude [rad].
  • λ::Number: Longitude [rad].
  • h::Number: Altitude [m].
  • F10::Number: 10.7-cm solar flux [sfu].
  • F10ₐ::Number: 10.7-cm averaged solar flux, 81-day centered on input time [sfu].
  • Kp::Number: Kp geomagnetic index with a delay of 3 hours.

Returns

  • JR1971Output{Float64}: Structure containing the results obtained from the model.
source
SatelliteToolboxAtmosphericModels.AtmosphericModels.nrlmsise00 — Method
nrlmsise00(instant::DateTime, h::Number[, ϕ_gd::Number, λ::Number, F10ₐ::Number, F10::Number, ap::Union{Number, AbstractVector}]; kwargs...) -> Nrlmsise00Output{Float64}
+nrlmsise00(jd::Number, h::Number[, ϕ_gd::Number, λ::Number, F10ₐ::Number, F10::Number, ap::Union{Number, AbstractVector}]; kwargs...) -> Nrlmsise00Output{Float64}

Compute the atmospheric density using the NRLMSISE-00 model.

If we omit all space indices, the system tries to obtain them automatically for the selected day jd or instant. However, the indices must be already initialized using the function SpaceIndices.init().

Arguments

  • instant::DateTime: Instant to compute the model represent using DateTime.
  • jd::Number: Julian day to compute the model.
  • h::Number: Altitude [m].
  • ϕ_gd::Number: Geodetic latitude [rad].
  • λ::Number: Longitude [rad].
  • F10ₐ::Number: 10.7-cm averaged solar flux, 90-day centered on input time [sfu].
  • F10::Number: 10.7-cm solar flux [sfu].
  • ap::Union{Number, AbstractVector}: Magnetic index, see the section AP for more information.

Keywords

  • flags::Nrlmsise00Flags: A list of flags to configure the model. For more information, see [Nrlmsise00Flags]@(ref). (Default = Nrlmsise00Flags())
  • include_anomalous_oxygen::Bool: If true, the anomalous oxygen density will be included in the total density computation. (Default = true)

Returns

  • Nrlmsise00Output{Float64}: Structure containing the results obtained from the model.

AP

The input variable ap contains the magnetic index. It can be a Number or an AbstractVector.

If ap is a number, it must contain the daily magnetic index.

If ap is an AbstractVector, it must be a vector with 7 dimensions as described below:

IndexDescription
1Daily AP.
23 hour AP index for current time.
33 hour AP index for 3 hours before current time.
43 hour AP index for 6 hours before current time.
53 hour AP index for 9 hours before current time.
6Average of eight 3 hour AP indices from 12 to 33 hours prior to current time.
7Average of eight 3 hour AP indices from 36 to 57 hours prior to current time.

Extended Help

  1. The densities of O, H, and N are set to 0 below 72.5 km.
  2. The exospheric temperature is set to global average for altitudes below 120 km. The 120 km gradient is left at global average value for altitudes below 72.5 km.
  3. Anomalous oxygen is defined as hot atomic oxygen or ionized oxygen that can become appreciable at high altitudes (> 500 km) for some ranges of inputs, thereby affection drag on satellites and debris. We group these species under the term Anomalous Oxygen, since their individual variations are not presently separable with the drag data used to define this model component.

Notes on Input Variables

F10 and F10ₐ values used to generate the model correspond to the 10.7 cm radio flux at the actual distance of the Earth from the Sun rather than the radio flux at 1 AU. The following site provides both classes of values:

ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SOLAR_RADIO/FLUX/

F10, F10ₐ, and ap effects are neither large nor well established below 80 km and these parameters should be set to 150, 150, and 4 respectively.

If include_anomalous_oxygen is false, the total_density field in the output is the sum of the mass densities of the species He, O, N₂, O₂, Ar, H, and N, but does not include anomalous oxygen.

If include_anomalous_oxygen is false, the total_density field in the output is the effective total mass density for drag and is the sum of the mass densities of all species in this model including the anomalous oxygen.

source
diff --git a/dev/man/exponential/index.html b/dev/man/exponential/index.html index c8f445a..aae8844 100644 --- a/dev/man/exponential/index.html +++ b/dev/man/exponential/index.html @@ -1,3 +1,3 @@ Exponential · SatelliteToolboxAtmosphericModels.jl
Edit on GitHub

Exponential Atmospheric Model

This model assumes we can compute the atmospheric density by:

\[\rho(h) = \rho_0 \cdot exp \left\lbrace - \frac{h - h_0}{H} \right\rbrace~,\]

where $\rho_0$, $h_0$, and $H$ are parameters obtained from tables. Reference [1] provides a discretization of those parameters based on the selected height $h$ that was obtained after evaluation of some accurate models.

In this package, we can compute the model using the following function:

function AtmosphericModels.exponential(h::T) where T<:Number

where h is the desired height [m].

Warning

Notice that this model does not consider important effects such as the Sun activity, the geomagnetic activity, the local time at the desired location, and others. Hence, although this can be used for fast evaluations, the accuracy is not good.

Examples

julia> AtmosphericModels.exponential(700e3)
-3.614e-14

References

  • [1] Vallado, D. A (2013). Fundamentals of Astrodynamics and Applications. 4th ed. Microcosm Press, Hawthorn, CA, USA.
+3.614e-14

References

diff --git a/dev/man/jb2008/index.html b/dev/man/jb2008/index.html index a711f6b..aa54708 100644 --- a/dev/man/jb2008/index.html +++ b/dev/man/jb2008/index.html @@ -47,4 +47,4 @@ O number density : 6.15818e+11 1 / m³ Ar number density : 6990.11 1 / m³ He number density : 5.06517e+11 1 / m³ - H number density : 4.32842e+09 1 / m³ + H number density : 4.32842e+09 1 / m³ diff --git a/dev/man/jr1971/index.html b/dev/man/jr1971/index.html index 72ed916..2ae0563 100644 --- a/dev/man/jr1971/index.html +++ b/dev/man/jr1971/index.html @@ -39,4 +39,4 @@ O number density : 1.88625e+12 1 / m³ Ar number density : 8826.28 1 / m³ He number density : 1.50861e+12 1 / m³ - H number density : 9.14578e+09 1 / m³ + H number density : 9.14578e+09 1 / m³ diff --git a/dev/man/nrlmsise00/index.html b/dev/man/nrlmsise00/index.html index 8da1d61..4575ab5 100644 --- a/dev/man/nrlmsise00/index.html +++ b/dev/man/nrlmsise00/index.html @@ -45,4 +45,4 @@ O₂ number density : 287502 1 / m³ Ar number density : 18.6967 1 / m³ He number density : 6.15464e+11 1 / m³ - H number density : 1.28711e+11 1 / m³ + H number density : 1.28711e+11 1 / m³ diff --git a/dev/search/index.html b/dev/search/index.html index 3dc0b3e..716697d 100644 --- a/dev/search/index.html +++ b/dev/search/index.html @@ -1,2 +1,2 @@ -Search · SatelliteToolboxAtmosphericModels.jl

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    +Search · SatelliteToolboxAtmosphericModels.jl

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