Imagery Calculator

Optical Sensors

Fill in all information known and click calculate - it calculates everything possible from your inputs

	Parameter	Value	Unit
	Sensor Characteristics
Sw	Sensor Width		mm
Fr	Focal Length		mm
Ps	Pixel Size		microns
Lambda	Center Wavelength		micrometers
D	Aperture Size		cm
	Flight/ Orbit Characteristics
H	Flying Height m AGL		m
H	Orbit Height km AGL		km
Teta	Off Nadir Angle		deg
	Image Characteristics
GSD	GSD		cm/pixel
GSD	GSD off nadir		cm/pixel
imW	Image Width		pixels
imH	Image Height		pixels
DW	Footprint Width		m
DH	Footprint Height		m
FOV	Field of View (in width)		degrees

Single Solutions:

Get GSD And Footprint, Different Methods Depending On Parameters Known


Sensor Specifications					Sensor Specifications					Sensor Specifications
Sw		Sensor Width Of The Camera	[millimeters]		H		Flying Height	[meters]		imW		Image Width	[pixels]
Fr		Focal Length Of The Camera	[millimeters]		Fr		Focal Length Of The Camera	[millimeters]		Fr		Focal Length Of The Camera	[millimeters]
H		Flying Height	[meters]		Ps		Pixel Size	[microns]		Sw		Sensor Width Of The Camera	[millimeters]
imW		Image Width	[pixels]							H		Flying Height	[meters]
imH		Image Height	[pixels]


Image Specifications					GSD					GSD
GSD		Ground Sampling Distance	[centimeters/pixel]		GSD		Ground Sampling Distance	[centimeters/pixel]		GSD		Ground Sampling Distance	[centimeters/pixel]
DW		Footprint Width	[meters]
DH		Footprint Height	[meters]

Get GSD Specific For Satellite Imagery


H		Orbit Height	[kilometers]		GSD Pan		Panchromatic GSD	[centimeters]		Teta		Pointing Angle/ Off Nadir Angle	[degrees]
Lambda		Central Wavelength	[micrometers]							GSD nadir		Ground Sampling Distance Nadir	[centimeters/pixel]
D		Aperture Size	[centimeters]
GSD					Multispectral GSD					GSD at given pointing angle (assumed flat earth)
GSD		Ground Sampling Distance	[centimeters/pixel]		GSD MS		Multispectral GSD	[centimeters/pixel]		GSD off nadir		Ground Sampling Distance	[centimeters/pixel]

Get Aperture Size

Aperture Size
H		Flying/ Orbit Height	[kilometers]
Lambda		Central Wavelenght	[micrometers]
GSD		Ground Sampling Distance	[centimeters/pixel]
D		Aperture Size	[centimeters]

Get Flying/ Orbit Height


GSD		Ground Sampling Distance	[centimeters/pixel]		GSD		Ground Sampling Distance	[centimeters/pixel]		GSD		Ground Sampling Distance	[centimeters/pixel]
Fr		Focal Length Of The Camera	[millimeters]		Fr		Focal Length Of The Camera	millimeters		Lambda		Central Wavelenghth	[micrometers]
imW		Image Width	[pixels]		Ps		Pixel Size	microns		D		Aperture Size	[centimeters]
Sw		Sensor Width Of The Camera	[millimeters]
Flying Height					Orbit Height					Orbit Height
H		Flying/ Orbit Height	[meters]		H		Flying/ Orbit Height	[meters]		H		Flying/ Orbit Height	[kilometers]

Get Focal Length


GSD		Ground Sampling Distance	[centimeters/pixel]		GSD		Ground Sampling Distance	[centimeters/pixel]
imW		Image Width	[pixels]		imW		Image Width	[pixels]
H		Flying Height	[meters]		H		Flying Height	[meters]
Sw		Sensor Width Of The Camera	[millimeters]
Focal Length					Focal Length	approximation	for when Sw not known
Fr		Focal Length Of The Camera	[millimeters]		Fr		Focal Length Of The Camera	[millimeters]

Get Sensor Width


Image Specifications
imW		Image Width	[pixels]		imW		Image Width	[pixels]
GSD		Ground Sampling Distance	[centimeters/pixel]		Ps		Sensor Pixel Size	[microns]
Fr		Focal Length Of The Camera	[millimeters]
H		Flying Height	[meters]


Sensor Width					Sensor Width
Sw		Sensor Width Of The Camera	[millimeters]		Sw		Sensor Width Of The Camera	[millimeters]

Get Pixel Size

Pixel Size
Sw		Sensor Width Of The Camera	[millimeters]
imW		Image Width	[pixels]
Ps		Pixel Size	[microns]

Get Field Of View

field of view
Sw		Sensor Width Of The Camera	[millimeters]
Sh		Sensor Height Of The Camera (optional)	[millimeters]
Fr		Focal Length	[millimeters]
FOV H		Field Of View Horizontally	[degrees]
FOV W		Field Of View Vertically	[degrees]

SAR Sensors

get Slant Range Resolution

Slant Range Resolution
B		CHIRP Bandwidth	[megahertz]	e.g. Radarsat2: 11.3 - 100 mHz, TerraSAR-X: 150/300 mHz,
Psr		Slant Range Resolution	[meters]

Get Ground Range Resolution

Ground Range Resolution
Psr		Slant Range Resolution	[meters]
H		Flying/ Orbit Height (not so important)	[kilometers]
Beta		Local Iincidence Angle	[degrees]
Pg		Ground Range Resolution	[meters]

Get Azimuth Range Resolution

Azimuth Range Resolution
D		Antenna Dimension In Azimuth Direction	[meters]
Pa		Azimuth Range Resolution	[meters]