Athens Digisonde ionogram characteristics

Electron Density

ElectronDensity

Observed Property: ElectronDensity
Dimensionality Instance: 2DImageIonogram

Peak density of a plasma layer

PeakDensity

Observed Property: PeakDensity
Dimensionality Instance: 2DImageIonogram

Peak density of a regular plasma layer

PeakDensity_Regular

Observed Property: PeakDensity_Regular
Dimensionality Instance: 2DImageIonogram

E layer peak electron density

PeakDensity_E-Layer

Observed Property: PeakDensity_E-Layer
Dimensionality Instance: 2DImageIonogram

F1 layer peak electron density

PeakDensity_F1-Layer

Observed Property: PeakDensity_F1-Layer
Dimensionality Instance: 2DImageIonogram

F2 layer peak electron density

PeakDensity_F2-Layer

Observed Property: PeakDensity_F2-Layer
Dimensionality Instance: 2DImageIonogram

Peak density of an irregular plasma layer

PeakDensity_Irregular

Observed Property: PeakDensity_Irregular
Dimensionality Instance: 2DImageIonogram

Es layer peak electron density

PeakDensity_Es-Layer

Observed Property: PeakDensity_Es-Layer
Dimensionality Instance: 2DImageIonogram

Height of peak density of plasma layer

PeakHeight

Observed Property: PeakHeight
Dimensionality Instance: 2DImageIonogram

Height of peak density of regular plasma layer

LayerPeakHeight_Regular

Observed Property: LayerPeakHeight_Regular
Dimensionality Instance: 2DImageIonogram

E layer peak height

PeakHeight_E-Layer

Observed Property: PeakHeight_E-Layer
Dimensionality Instance: 2DImageIonogram

F1 layer peak height

PeakHeight_F1-Layer

Observed Property: PeakHeight_F1-Layer
Dimensionality Instance: 2DImageIonogram

F2 layer peak height

PeakHeight_F2-Layer

Observed Property: PeakHeight_F2-Layer
Dimensionality Instance: 2DImageIonogram

Peak density of an irregular plasma layer

LayerPeakHeight_Irregular

Observed Property: LayerPeakHeight_Irregular
Dimensionality Instance: 2DImageIonogram

Es layer peak electron density

PeakHeight_Es-Layer

Observed Property: PeakHeight_Es-Layer
Dimensionality Instance: 2DImageIonogram

Height of a layer at half peak density

HalfDensityHeight

Observed Property: HalfDensityHeight
Dimensionality Instance: 2DImageIonogram

F2 layer half-density height

HalfDensityHeight_F2-Layer

Observed Property: HalfDensityHeight_F2-Layer
Dimensionality Instance: 2DImageIonogram

Parameter of profile shape model

ProfileShapeParameter

Observed Property: ProfileShapeParameter
Dimensionality Instance: 2DImageIonogram

Density Profile Parameter in IRI

ProfileShapeParameter_IRI

Observed Property: ProfileShapeParameter_IRI
Dimensionality Instance: 2DImageIonogram

Density Profile Thickness B0

ProfileShapeParameter_B0

Observed Property: ProfileShapeParameter_B0
Dimensionality Instance: 2DImageIonogram

Density Profile Shape B1

ProfileShapeParameter_B1

Observed Property: ProfileShapeParameter_B1
Dimensionality Instance: 2DImageIonogram

Density Profile Shape D1

ProfileShapeParameter_D1

Observed Property: ProfileShapeParameter_D1
Dimensionality Instance: 2DImageIonogram

Parabolic Density Profile Model Parameter

ProfileShapeParameter_Parabolic

Observed Property: ProfileShapeParameter_Parabolic
Dimensionality Instance: 2DImageIonogram

Peak height of a parabolic plasma layer

ParabolicLayerPeakHeight

Observed Property: ParabolicLayerPeakHeight
Dimensionality Instance: 2DImageIonogram

Parabolic-approximation E layer peak height

PeakHeight_E-Layer_Parabolic

Observed Property: PeakHeight_E-Layer_Parabolic
Dimensionality Instance: 2DImageIonogram

Parabolic-approximation peak height of F2 layer

PeakHeight_F2-Layer_Parabolic

Observed Property: PeakHeight_F2-Layer_Parabolic
Dimensionality Instance: 2DImageIonogram

Parabolic-approximation peak height of F2 layer,with correction

PeakHeight_F2-Layer_ParabolicCorrected

Observed Property: PeakHeight_F2-Layer_ParabolicCorrected
Dimensionality Instance: 2DImageIonogram

Semi-thickness of a parabolic layer of plasma

ParabolicLayerSemiThickness

Observed Property: ParabolicLayerSemiThickness
Dimensionality Instance: 2DImageIonogram

Parabolic-approximation E layer semi-thickness

SemiThickness_E-Layer_Parabolic

Observed Property: SemiThickness_E-Layer_Parabolic
Dimensionality Instance: 2DImageIonogram

Parabolic-approximation F2 layer semi-thickness

SemiThickness_F2-Layer_Parabolic

Observed Property: SemiThickness_F2-Layer_Parabolic
Dimensionality Instance: 2DImageIonogram

Parabolic-approximation F1 layer semi-thickness

SemiThickness_F1-Layer_Parabolic

Observed Property: SemiThickness_F1-Layer_Parabolic
Dimensionality Instance: 2DImageIonogram

Chapman-approximation scale height of plasma layer

ChapmanLayerScaleHeight

Observed Property: ChapmanLayerScaleHeight
Dimensionality Instance: 2DImageIonogram

Chapman-approximation scale height of F2 layer

ScaleHeight_F2-Layer_Chapman

Observed Property: ScaleHeight_F2-Layer_Chapman
Dimensionality Instance: 2DImageIonogram

Total Vertical Electron Content

TotalElectronContent_Vertical

Observed Property: TotalElectronContent_Vertical
Dimensionality Instance: 2DImageIonogram

Electromagnetic Wave

EM-Wave

Observed Property: EM-Wave
Dimensionality Instance: 2DImageIonogram

EM-wave Direction

EM-Wave_Direction

Observed Property: EM-Wave_Direction
Dimensionality Instance: 2DImageIonogram

EM-wave Polarization

EM-Wave_Polarization

Observed Property: EM-Wave_Polarization
Dimensionality Instance: 2DImageIonogram

EM-wave Power

EM-Wave_Power

Observed Property: EM-Wave_Power
Dimensionality Instance: 2DImageIonogram

EM-wave Electric Field Vector,O-Mode

EM-Wave_ElectricField_O-Mode

Observed Property: EM-Wave_ElectricField_O-Mode
Dimensionality Instance: 2DImageIonogram

EM-wave Electric Field Vector,X-Mode

EM-Wave_ElectricField_X-Mode

Observed Property: EM-Wave_ElectricField_X-Mode
Dimensionality Instance: 2DImageIonogram

Critical Frequency

CriticalFrequency

Observed Property: CriticalFrequency
Dimensionality Instance: 2DImageIonogram

O-Mode Critical Frequency

CriticalFrequency_O-Mode

Observed Property: CriticalFrequency_O-Mode
Dimensionality Instance: 2DImageIonogram

X-Mode Critical Frequency

CriticalFrequency_X-Mode

Observed Property: CriticalFrequency_X-Mode
Dimensionality Instance: 2DImageIonogram

Z-Mode Critical Frequency

CriticalFrequency_Z-Mode

Observed Property: CriticalFrequency_Z-Mode
Dimensionality Instance: 2DImageIonogram

F2-layer Critical Frequency

CriticalFrequency_F2-Layer

Observed Property: CriticalFrequency_F2-Layer
Dimensionality Instance: 2DImageIonogram

F2-layer X-Mode Critical Frequency

CriticalFrequency_F2-Layer_X-Mode

Observed Property: CriticalFrequency_F2-Layer_X-Mode
Dimensionality Instance: 2DImageIonogram

F2-layer Z-Mode Critical Frequency

CriticalFrequency_F2-Layer_Z-Mode

Observed Property: CriticalFrequency_F2-Layer_Z-Mode
Dimensionality Instance: 2DImageIonogram

F1-layer Critical Frequency

CriticalFrequency_F1-Layer

Observed Property: CriticalFrequency_F1-Layer
Dimensionality Instance: 2DImageIonogram

F1-layer X-Mode Critical Frequency

CriticalFrequency_F1-Layer_X-Mode

Observed Property: CriticalFrequency_F1-Layer_X-Mode
Dimensionality Instance: 2DImageIonogram

E-layer Critical Frequency

CriticalFrequency_E-Layer

Observed Property: CriticalFrequency_E-Layer
Dimensionality Instance: 2DImageIonogram

E2-layer Critical Frequency

CriticalFrequency_E2-Layer

Observed Property: CriticalFrequency_E2-Layer
Dimensionality Instance: 2DImageIonogram

Es-layer Critical Frequency

CriticalFrequency_SporadicE-Layer

Observed Property: CriticalFrequency_SporadicE-Layer
Dimensionality Instance: 2DImageIonogram

Minimum Virtual Height of plasma layer

MinimumVirtualHeight

Observed Property: MinimumVirtualHeight
Dimensionality Instance: 2DImageIonogram

Minimum Virtual Height of F2 layer

MinimumVirtualHeight_F2-Layer

Observed Property: MinimumVirtualHeight_F2-Layer
Dimensionality Instance: 2DImageIonogram

Minimum Virtual Height of F1 layer

MinimumVirtualHeight_F1-Layer

Observed Property: MinimumVirtualHeight_F1-Layer
Dimensionality Instance: 2DImageIonogram

Minimum Virtual Height of F layer

MinimumVirtualHeight_F-Region

Observed Property: MinimumVirtualHeight_F-Region
Dimensionality Instance: 2DImageIonogram

Minimum Virtual Height of E layer

MinimumVirtualHeight_E-Layer

Observed Property: MinimumVirtualHeight_E-Layer
Dimensionality Instance: 2DImageIonogram

Minimum Virtual Height of E2 layer

MinimumVirtualHeight_E2-Layer

Observed Property: MinimumVirtualHeight_E2-Layer
Dimensionality Instance: 2DImageIonogram

Minimum Virtual Height of Es layer

MinimumVirtualHeight_SporadicE-Layer

Observed Property: MinimumVirtualHeight_SporadicE-Layer
Dimensionality Instance: 2DImageIonogram

Minimum Frequency of Reflections from Plasma Layer

MinimumEchoFrequency

Observed Property: MinimumEchoFrequency
Dimensionality Instance: 2DImageIonogram

Minimum frequency of Reflections from Plasma Layer

MinimumFrequency_FirstHop_AllLayers

Observed Property: MinimumFrequency_FirstHop_AllLayers
Dimensionality Instance: 2DImageIonogram

Minimum frequency of ionospheric reflections in F region

MinimumFrequency_F-Region

Observed Property: MinimumFrequency_F-Region
Dimensionality Instance: 2DImageIonogram

Minimum frequency of ionospheric reflections in E region

MinimumFrequency_E-Region

Observed Property: MinimumFrequency_E-Region
Dimensionality Instance: 2DImageIonogram

Minimum frequency of ionospheric reflections in Es layer

MinimumFrequency_SporadicE-Layer

Observed Property: MinimumFrequency_SporadicE-Layer
Dimensionality Instance: 2DImageIonogram

Top Frequency of Reflections from Plasma Layer

TopEchoFrequency

Observed Property: TopEchoFrequency
Dimensionality Instance: 2DImageIonogram

Top Frequency of O-Mode Reflections

TopFrequency_O-Mode

Observed Property: TopFrequency_O-Mode
Dimensionality Instance: 2DImageIonogram

Es-layer Top Frequency

TopFrequency_SporadicE-Layer

Observed Property: TopFrequency_SporadicE-Layer
Dimensionality Instance: 2DImageIonogram

F2-layer Top Frequency

TopFrequency_F2-Layer

Observed Property: TopFrequency_F2-Layer
Dimensionality Instance: 2DImageIonogram

Top Frequency of X-Mode Reflections

TopFrequency_X-Mode

Observed Property: TopFrequency_X-Mode
Dimensionality Instance: 2DImageIonogram

Range Spread of F layer trace

RangeSpread_SpreadF

Observed Property: RangeSpread_SpreadF
Dimensionality Instance: 2DImageIonogram

Frequency Spread of F layer trace

FrequencySpread_SpreadF

Observed Property: FrequencySpread_SpreadF
Dimensionality Instance: 2DImageIonogram

MUF(3000)

MaximumUsableFrequency_3000km

Observed Property: MaximumUsableFrequency_3000km
Dimensionality Instance: 2DImageIonogram

Virtual Height of a trace at given frequency

VirtualHeightAtGivenFrequency

Observed Property: VirtualHeightAtGivenFrequency
Dimensionality Instance: 2DImageIonogram

Resonance Frequency

ResonanceFrequency

Observed Property: ResonanceFrequency
Dimensionality Instance: 2DImageIonogram

Editor	National Observatory of Athens
Version	1
Created	Monday 14th Nov. 2022, 11:06
Last Modified	Monday 14th Nov. 2022, 11:20

Athens Digisonde ionogram characteristics

Type

Description

Capabilities (74)

Electron Density

Peak density of a plasma layer

Peak density of a regular plasma layer

E layer peak electron density

F1 layer peak electron density

F2 layer peak electron density

Peak density of an irregular plasma layer

Es layer peak electron density

Height of peak density of plasma layer

Height of peak density of regular plasma layer

E layer peak height

F1 layer peak height

F2 layer peak height

Peak density of an irregular plasma layer

Es layer peak electron density

Height of a layer at half peak density

F2 layer half-density height

Parameter of profile shape model

Density Profile Parameter in IRI

Density Profile Thickness B0

Density Profile Shape B1

Density Profile Shape D1

Parabolic Density Profile Model Parameter

Peak height of a parabolic plasma layer

Parabolic-approximation E layer peak height

Parabolic-approximation peak height of F2 layer

Parabolic-approximation peak height of F2 layer,with correction

Semi-thickness of a parabolic layer of plasma

Parabolic-approximation E layer semi-thickness

Parabolic-approximation F2 layer semi-thickness

Parabolic-approximation F1 layer semi-thickness

Chapman-approximation scale height of plasma layer

Chapman-approximation scale height of F2 layer

Total Vertical Electron Content

Electromagnetic Wave

EM-wave Direction

EM-wave Polarization

EM-wave Power

EM-wave Electric Field Vector,O-Mode

EM-wave Electric Field Vector,X-Mode

Critical Frequency

O-Mode Critical Frequency

X-Mode Critical Frequency

Z-Mode Critical Frequency

F2-layer Critical Frequency

F2-layer X-Mode Critical Frequency

F2-layer Z-Mode Critical Frequency

F1-layer Critical Frequency

F1-layer X-Mode Critical Frequency

E-layer Critical Frequency

E2-layer Critical Frequency

Es-layer Critical Frequency

Minimum Virtual Height of plasma layer

Minimum Virtual Height of F2 layer

Minimum Virtual Height of F1 layer

Minimum Virtual Height of F layer

Minimum Virtual Height of E layer

Minimum Virtual Height of E2 layer

Minimum Virtual Height of Es layer

Minimum Frequency of Reflections from Plasma Layer

Minimum frequency of Reflections from Plasma Layer

Minimum frequency of ionospheric reflections in F region

Minimum frequency of ionospheric reflections in E region

Minimum frequency of ionospheric reflections in Es layer

Top Frequency of Reflections from Plasma Layer

Top Frequency of O-Mode Reflections

Es-layer Top Frequency

F2-layer Top Frequency

Top Frequency of X-Mode Reflections

Range Spread of F layer trace

Frequency Spread of F layer trace

MUF(3000)

Virtual Height of a trace at given frequency

Resonance Frequency

Data Levels

Further Information and Resources