Metadata Reference
Metadata is the term used to describe all the ancillary information about an image that might be important to the user.
This page captures all the metadata items that are present in ICEYE SLC and GRD Cloud Optimized GeoTIFF data products. The table indicates whether the metadata is available in the accompanying JSON metadata file, embeded as metadata in the GeoTIFF file or available in both. You can use the search bar at the top from any page and enter the metadata element you are interested in and it will find it on this page.
ICEYE Cloud Optimized GeoTIFF Metadata
| Field | Description | Data type | Units | Example | SLC JSON | GRD JSON | SLC GEOTIFF | GRD GEOTIFF |
|---|---|---|---|---|---|---|---|---|
| datetime | Acquisition center time. | string | UTC | "2025-06-27T11:24:12.843Z" | Yes | Yes | Yes | Yes |
| created | File creation time. | string | UTC | "2025-08-29T08:12:46Z" | Yes | Yes | Yes | Yes |
| start_datetime | Acquisition start time. | string | UTC | "2025-06-27T11:24:05.785Z" | Yes | Yes | Yes | Yes |
| end_datetime | Acquisition end time. | string | UTC | "2025-06-27T11:24:19.901Z" | Yes | Yes | Yes | Yes |
| platform | Platform (satellite) name. | string | "ICEYE-X42" | Yes | Yes | Yes | Yes | |
| constellation | Constellation name. | string | "ICEYE" | Yes | Yes | Yes | Yes | |
| sar:center_frequency | Center frequency of the radar instrument. | integer | Hz | 9600000000 | Yes | Yes | Yes | Yes |
| sar:frequency_band | Radar frequency band. | string | "X" | Yes | Yes | Yes | Yes | |
| sar:instrument_mode | SAR instrument acquisition mode (collection strategy) | string | "spotlight" | Yes | Yes | Yes | Yes | |
| sar:looks_azimuth | Number of looks in azimuth. | integer | 1 | Yes | Yes | Yes | Yes | |
| sar:looks_range | Number of looks in range. | integer | 1 | Yes | Yes | Yes | Yes | |
| sar:observation_direction | Observation (look) direction. | string | "right" | Yes | Yes | Yes | Yes | |
| sar:pixel_spacing_azimuth | Pixel spacing in azimuth. | number | m | 0.09 | Yes | Yes | Yes | Yes |
| sar:pixel_spacing_range | Pixel spacing in range matching the projection of the data product | number | m | 0.19 | Yes | Yes | Yes | Yes |
| sar:polarizations | List of transmit/receive polarizations. | array |
["VV"] | Yes | Yes | Yes | Yes | |
| sar:product_type | SAR product type. | string | "SLC-COG" | Yes | Yes | Yes | Yes | |
| sar:resolution_azimuth | Azimuth resolution (along-track). | number | m | 0.1 | Yes | Yes | Yes | Yes |
| sar:resolution_range | Range resolution (ability to distinguish across range). | number | m | 0.25 | Yes | Yes | Yes | Yes |
| sat:orbit_state | Orbit state during acquisition. | string | "descending" | Yes | Yes | Yes | Yes | |
| view:azimuth | View azimuth angle from true north. | number | degrees | 100.78 | Yes | Yes | Yes | Yes |
| view:incidence_angle | Incidence angle at scene center. | number | degrees | 31.94 | Yes | Yes | Yes | Yes |
| view:off_nadir | Angle, measured at the satellite, between the local vertical (nadir) and the radar line of sight to the scene center point on the ground | number | degrees | 28.94 | Yes | Yes | Yes | Yes |
| proj:centroid.lat | Latitude of scene center | number | degrees | 48.383333000006274 | Yes | Yes | Yes | Yes |
| proj:centroid.lon | Longitude of scene center | number | degrees | -4.500000000000001 | Yes | Yes | Yes | Yes |
| proj:code | Coordinate reference system code (EPSG). | string | "EPSG:4326" | Yes | Yes | Yes | Yes | |
| proj:shape | Raster shape [height, width] in pixels. | array |
pixels | [57446, 13878] | Yes | Yes | Yes | Yes |
| proj:transform | Affine transform from pixel to CRS coordinates. | array |
[-4.460495636346755, -2.2017657442157062e-07, -4.7798640613900575e-06, 48.40120537476053, -7.688449427876072e-07, 6.059… | Yes | Yes | Yes | Yes | |
| raster:bands[].bits_per_sample | Bits per sample for the band. | integer | bits | 16 | Yes | Yes | Yes | Yes |
| raster:bands[].data_type | Band sample data type. | string | "ui16" | Yes | Yes | Yes | Yes | |
| processing:software.forge | Forge software version. | string | "v0.12.1" | Yes | Yes | Yes | Yes | |
| processing:software.processor | Processor identifier or version. | string | "ICEYE_I_1.1.1" | Yes | Yes | Yes | Yes | |
| iceye:acquisition_prf | Pulse Repetition Frequency (PRF) of the collection. | number | Hz | 6832.87 | Yes | Yes | Yes | Yes |
| iceye:acquisition_range_sampling_rate | Sampling rate used for digital sampling., defines range sample spacing. | integer | Samples/s | 786365100 | Yes | Yes | Yes | Yes |
| iceye:average_scene_height | Average height of the scene from terrain model. | integer | meters | 81 | Yes | Yes | Yes | Yes |
| iceye:calibration_factor | Scaling coefficients to be applied to calibrate amplitude product to absolute brigthness intensity. | number | 2.3701258619904503e-05 | Yes | Yes | Yes | Yes | |
| iceye:coordinate_frame | Coordinate frame used for the orbit positions and velocities. | string | "ecef" | Yes | Yes | Yes | Yes | |
| iceye:doppler_centroid_coeffs | 2d array MxN where M is the number of estimates and N number of coefficients. | array |
[[1186.0097884377446], [1302.0044735688139], [1417.9991586998833], [1533.9938438309525], [1649.988528962022], [1765.983… | Yes | Yes | Yes | Yes | |
| iceye:doppler_centroid_datetimes | Timestamp for each doppler centroid estimate. | array |
UTC | ["2025-06-27T11:24:05.788Z", "2025-06-27T11:24:06.729Z", "2025-06-27T11:24:07.67Z", "2025-06-27T11:24:08.611Z", "2025-0… | Yes | Yes | Yes | Yes |
| iceye:doppler_cone_angle | Doppler cone angle is the angle between the velocity vector of the satellite and the line of sight to the scene center at the mid aperture position | number | degrees | 89.92 | Yes | Yes | Yes | Yes |
| iceye:doppler_rate_coeffs | Coefficients of doppler rate polynomial as a function of range time. Stored as a vector with size corresponding to the order of the doppler rate polynomial | array |
[-1457.4908537348836, 946973.7739678036, -273667766.68754256, 29668500987.46422] | Yes | Yes | Yes | Yes | |
| iceye:extent_azimuth | Scene extent in the azimuth direction. | integer | meters | 5000 | Yes | Yes | Yes | Yes |
| iceye:extent_range | Scene extent in the range direction. | number | meters | 2645.4 | Yes | Yes | Yes | Yes |
| iceye:filename | File name | string | "ICEYE_GBSG1X_20250627T112405Z_5045505_X42_SLF_SLC.json" | Yes | Yes | Yes | Yes | |
| iceye:focal_plane_normal | Unit normal vector of the image focal plan. | array |
meters | [0.6620963495002165, -0.05210811278801616, 0.7476049548793524] | Yes | Yes | Yes | Yes |
| iceye:frame_number | Identifier of the standardized ground tile (frame) that partitions acquisitions for cataloguing purposes | integer | 1 | Yes | Yes | Yes | Yes | |
| iceye:grazing_angle | Grazing angle at the center range. | number | degrees | 58.06 | Yes | Yes | Yes | Yes |
| iceye:grazing_angle_far | Grazing angle at the far range. | number | degrees | 57.95 | Yes | Yes | Yes | Yes |
| iceye:grazing_angle_near | Grazing angle at the near range. | number | degrees | 58.16 | Yes | Yes | Yes | Yes |
| iceye:ground_to_slant_coeff | Ground range to slant range polynomial coefficients | array |
[689296.4246138686, 0.5277304491972589, 5.21257826753107e-07, -4.0719873273670114e-13, 1.1418249839732888e-19] | Yes | Yes | Yes | Yes | |
| iceye:image_id | Image identifier | integer | 5045505 | Yes | Yes | Yes | Yes | |
| iceye:image_plane_normal | Unit normal vector of the projected image plan. | array |
meters | [0.16665251094235822, -0.84929998630678, 0.5009156354676009] | Yes | Yes | Yes | Yes |
| iceye:incidence_angle_coeffs | Coefficients of the polynomial for calculating the incidence angle dependence in range | array |
[31.744567475607397, 1.5192446811825352e-05, -1.964794848015556e-12, 3.876210048840908e-20] | Yes | Yes | Yes | Yes | |
| iceye:incidence_angle_far | Incidence angle at the far range. | number | degrees | 32.05 | Yes | Yes | Yes | Yes |
| iceye:incidence_angle_near | Incidence angle at the near range. | number | degrees | 31.84 | Yes | Yes | Yes | Yes |
| iceye:layover_angle | Layover angle at the center range. | number | degrees | -0.07 | Yes | Yes | Yes | Yes |
| iceye:looks_azimuth_bandwidth | Bandwith utilized for each azimuth look during mutlilooking. | number | Hz | 69462.59 | Yes | Yes | Yes | Yes |
| iceye:looks_azimuth_overlap | Percentage of bandwidth overlapping between azimuth looks. | integer | 0 | Yes | Yes | Yes | Yes | |
| iceye:looks_range_bandwidth | Bandwith utilized for each range look during mutlilooking. |
integer | Hz | 600000000 | Yes | Yes | Yes | Yes |
| iceye:looks_range_overlap | Percentage of bandwidth overlapping between range looks | integer | 0 | Yes | Yes | Yes | Yes | |
| iceye:orbit_mean_altitude | Average orbit altitude over the acquisition period. |
integer | meters | 595294 | Yes | Yes | Yes | Yes |
| iceye:orientation | Orientation of the data. By default we use `shadows-down` where the satellite is "over" the image. | string | "shadows-down" | Yes | Yes | Yes | Yes | |
| iceye:processing_bandwidth_azimuth | Doppler bandwidth used for azimuth compression (defines achievable azimuth resolution) |
number | Hz | 69462.59 | Yes | Yes | Yes | Yes |
| iceye:processing_bandwidth_range | Signal bandwidth used for range processing | integer | Hz | 600000000 | Yes | Yes | Yes | Yes |
| iceye:processing_end_datetime | Datetime at which this file was created. | string | UTC | "2025-08-29T08:12:46.280439Z" | Yes | Yes | Yes | Yes |
| iceye:processing_mode | Imaging mode short name | string | "SLF" | Yes | Yes | Yes | Yes | |
| iceye:processing_prf | Pulse Repetition Frequency (PRF) used during azimuth processing, representing the effective sampling frequency of the radar signal in the azimuth (time) domain. |
number | Hz | 80231.29 | Yes | Yes | Yes | Yes |
| iceye:pulse_bandwidth | Range of frequencies contained in each pulse. | integer | Hz | 600000000 | Yes | Yes | Yes | Yes |
| iceye:pulse_duration | Pulse Duration | number | Seconds | 2.9328e-05 | Yes | Yes | Yes | Yes |
| iceye:range | Slant Range distance to the center of the image | number | meters | 689995.3 | Yes | Yes | Yes | Yes |
| iceye:range_far | Slant Range distance to the far end of the image | number | meters | 690696.03 | Yes | Yes | Yes | Yes |
| iceye:range_near | Slant Range distance to the near end of the image | number | meters | 689296.4 | Yes | Yes | Yes | Yes |
| iceye:resolution_range_far | Range resolution at the far end of the image matching the projection of the image product. |
number | meters | 0.47 | Yes | Yes | Yes | Yes |
| iceye:resolution_range_near | Resolution at the far near of the image |
number | meters | 0.47 | Yes | Yes | Yes | Yes |
| iceye:rpc.err_bias | The RMS bias error in meters per horizontal axis of all points in the image (-1.0 if unknown) | string | "-1" | No | No | Yes | Yes | |
| iceye:rpc.err_rand | RMS random error in meters per horizontal axis of each point in the image (-1.0 if unknown) | string | "-1" | No | No | Yes | Yes | |
| iceye:rpc.height_off | RPC metadata | number | meters | 65.89068008902646 | Yes | Yes | Yes | Yes |
| iceye:rpc.height_scale | Geodetic height scale | number | 1985.3139712787613 | Yes | Yes | Yes | Yes | |
| iceye:rpc.lat_off | RPC metadata | number | degrees | 48.38349824848355 | Yes | Yes | Yes | Yes |
| iceye:rpc.lat_scale | Geodetic Latitude Scale | number | 0.03131258713543872 | Yes | Yes | Yes | Yes | |
| iceye:rpc.line_den_coeff | Twenty coefficients for the polynomial in the Denominator of the rn equation. | array |
[937.5478333905021, -16.152174582918615, 2.66321308103053, -15.732749953210087, -0.020253245003849916, 0.09088024188738… | Yes | Yes | Yes | Yes | |
| iceye:rpc.line_num_coeff | Twenty coefficients for the polynomial in the Numerator of the rn equation. | array |
[0.31310942547564613, -518.1230729399803, 98.58307195379003, -482.19724392613966, -2.8524751023892976, 12.3205558048048… | Yes | Yes | Yes | Yes | |
| iceye:rpc.line_off | RPC metadata | number | pixels | 6935.578599065032 | Yes | Yes | Yes | Yes |
| iceye:rpc.line_scale | RPC metadata | number | 17184.438550766587 | Yes | Yes | Yes | Yes | |
| iceye:rpc.long_off | RPC metadata | number | degrees | -4.499630001434166 | Yes | Yes | Yes | Yes |
| iceye:rpc.long_scale | Geodetic Longitude Scale | number | 0.04702429291588128 | Yes | Yes | Yes | Yes | |
| iceye:rpc.samp_den_coeff | Twenty coefficients for the polynomial in the Denominator of the cn equation. | array |
[2.8637490603606657, 0.07048866959982382, -0.009940440709574106, 0.013746271493462473, 9.92981470441374e-06, -2.1317899… | Yes | Yes | Yes | Yes | |
| iceye:rpc.samp_num_coeff | Twenty coefficients for the polynomial in the Numerator of the cn equation. | array |
[0.00025085559871048806, -0.6258372654112888, -3.2870285454739494, -0.003361131161303375, -0.07835104615616711, -0.0032… | Yes | Yes | Yes | Yes | |
| iceye:rpc.samp_off | RPC metadata | number | pixels | 28458.034337441357 | Yes | Yes | Yes | Yes |
| iceye:rpc.samp_scale | RPC metadata | number | 34238.420829056966 | Yes | Yes | Yes | Yes | |
| iceye:run_name | Processing instance name which produced this dataset. | string | "default" | Yes | Yes | Yes | Yes | |
| iceye:scene_id | Scene center coordinates encoded in a GeoHash. | string | "GBSG1X" | Yes | Yes | Yes | Yes | |
| iceye:shadow_angle | Shadow angle at the center range. | number | degrees | 280.78 | Yes | Yes | Yes | Yes |
| iceye:squint_angle | Squint angle at the center range. | integer | degrees | -90 | Yes | Yes | Yes | Yes |
| iceye:synthetic_aperture_angle | Angular extent over which the radar collect signals from a target. | number | degrees | 8.91 | Yes | Yes | Yes | Yes |
| iceye:window_function_azimuth | Windowing function used over azimuth frequencies | string | "TAYLOR_20_4" | No | Yes | No | Yes | |
| iceye:window_function_range | Windowing function used over range frequencies | string | "TAYLOR_20_4" | No | Yes | No | Yes | |
| iceye:zero_doppler_end_datetime | Time at which the radial velocity between the satellite and the ground target at the last azimuth position is zero, defining the end of the image in zero-Doppler time | string | UTC | "2025-06-27T11:24:13.351Z" | Yes | Yes | Yes | Yes |
| iceye:zero_doppler_start_datetime | Time at which the radial velocity between the satellite and the ground target at the first azimuth position is zero, defining the start of the image in zero-Doppler time | string | UTC | "2025-06-27T11:24:12.632Z" | Yes | Yes | Yes | Yes |
| AREA_OR_POINT | GeoTIFF tag indicating whether pixels represent an area or a point. | string | "Area" | No | No | Yes | Yes | |
| IMAGE_STRUCTURE.COMPRESSION | GeoTIFF compression. | string | "LZW" | No | No | No | Yes | |
| IMAGE_STRUCTURE.INTERLEAVE | Interleave mode. | string | "PIXEL" | No | No | Yes | Yes | |
| IMAGE_STRUCTURE.LAYOUT | GeoTIFF internal layout (e.g., COG). | string | "COG" | No | No | Yes | Yes | |
| PRODUCT_NAME | Product Name | string | "ICEYE_GBSG1X_20250627T112405Z_5045505_X42_SLF_SLC" | No | No | Yes | Yes |