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CRPSAltitudeAttenuation Method

Apply altitude attenuation for a radioelement

Namespace:  Geosoft.Desktop.GXNetX
Assembly:  geosoft.desktop.gxnetx (in geosoft.desktop.gxnetx.dll) Version: 2025.2.0.42
Syntax
public static void AltitudeAttenuation(
	CGXNETCore gxNetShared,
	CDB db,
	int line,
	string input_channel,
	double height_att_coeff,
	double nom_altimeter,
	string stp_alt_channel,
	string output_channel
)

public static void AltitudeAttenuation(
	CGXNETCore gxNetShared,
	CDB db,
	int line,
	string input_channel,
	double height_att_coeff,
	double nom_altimeter,
	string stp_alt_channel,
	string output_channel
)

Parameters

gxNetShared
Type: GeoEngine.Core.GXNetXCGXNETCore
A shared CGXNETCore
db
Type: GeoEngine.Core.GXNetXCDB
DB Object
line
Type: SystemInt32
Line to process (NULLSYMB for all selected lines)
input_channel
Type: SystemString
Input channel name
height_att_coeff
Type: SystemDouble
Height attenuation coefficient (per metre at STP)
nom_altimeter
Type: SystemDouble
Nominal survey altitude (m)
stp_alt_channel
Type: SystemString
Input STP corrected altimeter channel name
output_channel
Type: SystemString
Output channel name (can be same channel as input)
Remarks
The altitude attenuation is calculated using the formula: Ns = Nm * exp(k * (H0 - H)) => Ns = Nm * exp(-k * (H - H0)) where: Ns = the count rate normalized to the nominal survey altitude, H0, Nm = the background corrected, stripped count rate at effective height H, k = height attenuation coefficient (per metre at STP) H = effective altitude (m) H0 = nominal survey altitude (m) The effective height was determined by applying Compton Stripping. HEIGHT ATTENUATION COEFF: Total Count (Recommended: -0.0070) (per metre at STP) Potassium (Recommended: -0.0088) Uranium (Recommended: -0.0082) Thorium (Recommended: -0.0070) Ref: See the RPSCORR.GXC file for details and implementation of the algorithm.
See Also