PSOrthoTile

PlanetScope 4-band Ortho Tiles as 25 km x 25 km UTM tiles. This data set includes imagery from all PlanetScope sensors.

Products Overview

All Ortho Tile products are provided in GeoTIFF format. The ortho tile product GeoTIFFs are resampled at 3.125 meters, and projected in the UTM projection using the WGS84 datum. An alpha mask is provided as a binary color channel, and can be used to remove or hide low quality pixels near the periphery of a given scene. This mask compensates for effects due to vignetting, low SNR, or hot or cold pixels.

PlanetScope Ortho Tiles are based on a worldwide, fixed UTM grid system. The grid is defined in 24 km by 24 km tile centers, with 1 km of overlap (each tile has an additional 500 m overlap with adjacent tiles), resulting in 25 km by 25 km tiles.

For PlanetScope split-frame satellites, imagery is collected as a series of overlapping framed scenes from a single satellite in a single pass. These scenes are subsequently orthorectified and an ortho tile is then generated from a collection of consecutive scenes, typically 4 to 5.

The PlanetScope Ortho Tile products are radiometrically, sensor, and geometrically corrected and aligned to a cartographic map projection. The geometric correction uses fine DEMs with a post spacing of between 30 and 90 meters. GCPs are used in the creation of every image and the accuracy of the product will vary from region to region based on available GCPs.

Product band order:

  • Band 1 = Blue
  • Band 2 = Green
  • Band 3 = Red
  • Band 4 = Near-infrared (analytic products only)

Item Properties

Property Name Description Type
id Globally unique item identifier. string
_permissions The permissions that the authenticated user has to the item. array
item_type Name of the item type. string
provider Name of the item provider (e.g. “planetscope”, ”rapideye”). string
satellite_id Globally unique satellite identifier. string
strip_id The unique identifier of the image stripe that the item came from. string
geometry Geographic boundary, formatted as a GeoJSON polygon. json
cloud_cover Average percentage of cloud coverage. double
gsd Ground sample distance - the distance between pixel centers as measured on the ground in meters. double
pixel_resolution Pixel resolution of the imagery in meters. double
epsg_code Ortho tile grid cell that the item is located in (not used if Scene). integer
sun_azimuth The angle of the sun, as seen by the observer, measured clockwise from the north (0 - 360). double
sun_elevation The angle of the sun above the horizon (0 - 90). double
view_angle The satellite's across-track, off-nadir viewing angle. Positive numbers denote east, negative numbers denote west (-25 - +25). double
grid_cell The grid cell identifier of the gridded item. integer
rows Number of rows in the image. integer
columns Number of columns in the image. integer
origin_x ULX coordinate of the extent of the data. The coordinate references the top left corner of the top left pixel. double
origin_y ULY coordinate of the extent of the data. The coordinate references the top left corner of the top left pixel. double
black_fill The percentage of the item containing black fill. double
anomalous_pixels Percentage of pixels that may have errors. Represented spatially in the UDM. double
usable_data Percentage of pixels that are usable, subtracting cloud cover and black fill. double
ground_control Positional accuracy of the item. If the item has uncertain positional accuracy, this value will be false. boolean
acquired Timestamp that the item was captured. datetime
published Timestamp that the item was published to the Planet API. datetime
updated Timestamp that the item record was last updated. datetime

Available Asset Types

Asset Name Description
visual Color corrected GeoTiff for visual applications.
visual_xml Visual asset XML metadata file.
analytic Radiometrically calibrated GeoTiff suitable for analytic applications.
analytic_xml Analytic asset XML metadata file.
analytic_dn Non-radiometrically calibrated GeoTiff suitable for analytic applications.
analytic_dn_xml Analytic DN asset XML metadata file.
udm Unusable Data Mask - Unusable data bit mask in GeoTIFF format for the visual and analytic scene assets.