Multispectral Scanner Sensor
The Multispectral Scanner System (MSS) Sensor were line scanning devices observing the Earth perpendicular to the orbital track. The cross-track scanning was accomplished by an oscillating mirror; six lines were scanned simultaneously in each of the four spectral bands for each mirror sweep. The forward motion of the satellite provided the along-track scan line progression.
Multispectral Scanner from Landsats 4 and 5 had a swath width of approximately 185 × 170 km from a height of approximately 900 km for Landsats 1, 2, and 3, and 705 km for Landsats 4 and 5. MSS data are widely used for general geologic studies as well as vegetation inventories.
MSS Sensor Specifications
- Sensor type: opto-mechanical
- Spatial Resolution: 68 m X 83 m (commonly resampled to 57 m, or 60 m)
- Spectral Range: 0.5 – 1.1 µm
- Number of Bands: 4, 5 (Landsat 3 only)
- Temporal Resolution: 18 days (L1-L3), 16 days (L4 & L5)
- Image Size: 185 km X 185 km
- Swath: 185 km
- Programmable: No
Multispectral Scanner Bands
Detectors record EMR in 4 bands:
- Bands 1 and 2 are in the visible portion of the spectrum and can detect cultural features, such as roads. These bands also show detail in water.
- Bands 3 and 4 are in the near-infrared portion used to identify land, water, and vegetation.
MSS Band Specifications
|Bands||Wavelenth (µm)||Resolution (m)||Uses|
|1||0.5-0.6||68 m X 83 m||Scans the region between blue and red|
chlorophy absorption bands.
Green reflectance of healthy vegetation.
Map water bodies.
|2||0.6-0.7||68 m X 83 m||Red chlorophy absorption band of healthy|
Identify vegetation types.
Determine soil boundary and geological
|3||0.7-0.8||68 m X 83 m||Identify crops.|
Identify soil and crop boundaries.
Identify land and water boundaries.
|4||0.8-1.1||68 m X 83 m|
Multispectral Scanner (MSS) 80-meter, multispectral data from Landsats 1 – 5.
Landsat MSS Band Specifications
|Band (L1-L2)||Band (L3)||Band (L4-L5)||µm||Resolution||L4/L5 TM Band Equivalent|
|4||4||1||0.5-0.6||68 m X 83 m||~ 2 (0.52–0.60 µm)|
|5||5||2||0.6-0.7||68 m X 83 m||~ 3 (0.63–0.69 µm)|
|6||6||3||0.7-0.8||68 m X 83 m||~ 4 (0.76–0.90 µm)|
|7||7||4||0.8-1.1||68 m X 83 m||~ 4 (0.76–0.90 µm)|
|N/A||8||N/A||10.4-12.6||68 m X 83 m||~ 6 (10.41-12.5 µm)|
Landsat TM Data Parameters
|Product Type||Level-1 Corrected|
|Pixel Size||60 m Reflective bands 4-7 (Landsat 1-3) and Bands 1-4 (Landsat 4-5)|
|Resampling method||cubic convolution (CC)|
|Map Projection||UTM – WGS 84|
Polar Stereographic for the continent of Antarctica.
|Image Orientation||Map (North Up)|