{
	"$schema": "http://json-schema.org/draft-07/schema#",
	"$id": "https://raw.githubusercontent.com/ceos-wgiss/stac-best-practices/main/schemas/opensearch-eo.json#",
	"title": "OpenSearch parameter declarations",
	"type": "object",
	"properties": {
		"compositeType": {
			"description": "Type of composite product expressed as time period that the composite product covers  (e.g. P10D for a 10 day composite)",
			"title": "Composite type",
			"type": "string"
		},
		"dissemination": {
			"description": "A string identifying the dissemination method (e.g. EUMETCast, EUMETCast-Europe, DataCentre)",
			"title": "Dissemination",
			"type": "string"
		},
		"doi": {
			"description": "Digital Object Identifier identifying the product (see http://www.doi.org)",
			"title": "Digital Object Identifier",
			"type": "string"
		},
		"hasSecurityConstraints": {
			"description": "A string informing if the resource has any security constraints.",
			"title": "has Security Constraints",
			"type": "string",
			"enum": [
				true,
				false
			]
		},
		"instrument": {
			"description": "A string identifying the instrument (e.g. MERIS, AATSR, ASAR, HRVIR. SAR).",
			"title": "Instrument",
			"type": "string"
		},
		"orbitType": {
			"description": "A string identifying the platform orbit type (e.g. LEO, GEO)",
			"title": "Orbit type",
			"type": "string"
		},
		"spectralRange": {
			"description": "A string identifying the sensor spectral range (e.g. INFRARED, NEAR-INFRARED, UV, VISIBLE)",
			"title": "Spectral range",
			"type": "string"
		},
		"platform": {
			"description": "A string with the platform short name (e.g. Sentinel-1)",
			"title": "Platform",
			"type": "string"
		},
		"platformSerialIdentifier": {
			"description": "A string with the Platform serial identifier",
			"title": "Platform serial identifier",
			"type": "string"
		},
		"processingLevel": {
			"description": "A string identifying the processing level applied to the entry",
			"title": "Processing level",
			"type": "string"
		},
		"productType": {
			"description": "A string identifying the entry type (e.g. ER02_SAR_IM__0P, MER_RR__1P, SM_SLC__1S, GES_DISC_AIRH3STD_V005)",
			"title": "Product type",
			"type": "string"
		},
		"sensorType": {
			"description": "A string identifying the sensor type.",
			"title": "Sensor type",
			"type": "string",
			"enum": [
				"OPTICAL",
				"RADAR",
				"ALTIMETRIC",
				"ATMOSPHERIC",
				"LIMB"
			]
		},
		"wavelength": {
			"description": "A number, set or interval requesting the sensor wavelengths in nanometers.",
			"title": "Wavelength",
			"type": "integer"
		},
		"title": {
			"description": "A name given to the resource [INSPIRE]",
			"title": "Title",
			"type": "string"
		},
		"topicCategory": {
			"description": "Main theme(s) of the dataset [INSPIRE]",
			"title": "Topic category",
			"type": "string"
		},
		"keyword": {
			"description": "Commonly used word(s) or formalised word(s) or phrase(s) used to describe the subject [INSPIRE].",
			"title": "Keyword",
			"type": "string"
		},
		"abstract": {
			"description": "Abstract [INSPIRE].",
			"title": "Abstract",
			"type": "string"
		},
		"denominator": {
			"description": "Level of detail expressed as a scale factor or a ground distance. Here: the number below the line in a vulgar fraction. [INSPIRE]",
			"title": "Denominator",
			"type": "integer"
		},
		"distanceValue": {
			"description": "Sample ground distance. Here: the distance as decimal value. Used in combination with distanceUOM. [INSPIRE]",
			"title": "Distance value",
			"type": "number"
		},
		"distanceUOM": {
			"description": "Sample ground distance. Here: the name of the unit of measure. CodeList, one of: meter, km,….  Used in combination with distanceValue. [INSPIRE]",
			"title": "Distance value",
			"type": "string"
		},
		"organisationName": {
			"description": "A string identifying the name of the organization responsible for the resource [INSPIRE]",
			"title": "Organisation name",
			"type": "string"
		},
		"organisationRole": {
			"description": "The function performed by the responsible party [INSPIRE]",
			"title": "Organisation role",
			"type": "string"
		},
		"publicationDate": {
			"format": "date-time",
			"description": "The date when the resource was issued",
			"title": "Publication date",
			"type": "string"
		},
		"lineage": {
			"description": "General explanation of the data producer’s knowledge about the lineage of a dataset. [INSPIRE]",
			"title": "Lineage",
			"type": "string"
		},
		"useLimitation": {
			"description": "A string identifying informing if the resource has usage limitations. [INSPIRE]",
			"title": "Use limitation",
			"type": "string"
		},
		"accessConstraint": {
			"description": "Applied to assure the protection of privacy or intellectual property, and any special restrictions or limitations on obtaining the resource [INSPIRE]",
			"title": "Access constraint",
			"type": "string"
		},
		"otherConstraint": {
			"description": "Other restrictions and legal prerequisites for accessing and using the resource or metadata. [INSPIRE]",
			"title": "Other constraint",
			"type": "string"
		},
		"classification": {
			"description": "Name of the handling restrictions on the resource or metadata. [INSPIRE]",
			"title": "Classification",
			"type": "string"
		},
		"language": {
			"description": "Language of the intellectual content of the metadata record. [INSPIRE]",
			"title": "Language",
			"type": "string"
		},
		"specification": {
			"description": "Title of the specification [INSPIRE]",
			"title": "Specification",
			"type": "string"
		},
		"specificationDate": {
			"format": "date-time",
			"description": "Reference date of specification [INSPIRE]",
			"title": "Specification date",
			"type": "string"
		},
		"specificationdateType": {
			"description": "Type reference date of specification [INSPIRE]",
			"title": "Specification date type",
			"type": "string",
			"enum": [
				"creation",
				"revision",
				"publication"
			]
		},
		"degree": {
			"description": "This is the degree of conformity of the resource to the related specification. Possible values: true (if conformant), false (if not conformant), null (if not evaluated) [INSPIRE].",
			"title": "Degree",
			"type": "string",
			"enum": [
				true,
				false,
				null
			]
		},
		"parentIdentifier": {
			"description": "A string identifying the parent of the entry in a hierarchy of resources",
			"title": "Parent identifier",
			"type": "string"
		},
		"productionStatus": {
			"description": "A string identifying the status of the entry.",
			"title": "Production status",
			"type": "string",
			"enum": [
				"ARCHIVED",
				"ACQUIRED",
				"CANCELLED"
			]
		},
		"acquisitionType": {
			"description": "Used to distinguishthe appropriateness of the acquisition for 'general' use, whether the product is a nominal acquisition, special calibration product or other",
			"title": "Acquisition type",
			"type": "string",
			"enum": [
				"NOMINAL",
				"CALIBRATION",
				"OTHER"
			]
		},
		"orbitNumber": {
			"description": "A number, set or interval requesting the acquisition orbit",
			"title": "Orbit number",
			"type": "integer"
		},
		"orbitDirection": {
			"description": "A string identifying the acquisition orbit direction.",
			"title": "Orbit direction",
			"type": "string",
			"enum": [
				"ASCENDING",
				"DESCENDING"
			]
		},
		"track": {
			"description": "A string identifying the orbit track",
			"title": "Track",
			"type": "string"
		},
		"frame": {
			"description": "A string identifying the orbit frame",
			"title": "Frame",
			"type": "string"
		},
		"swathIdentifier": {
			"description": "Swath identifier (e.g. Envisat ASAR has 7 distinct swaths (I1,I2,I3...I7) that correspond to precise incidence angles for the sensor). Value list can be retrieved with codeSpace.",
			"title": "Swath identifier",
			"type": "string"
		},
		"cloudCover": {
			"description": "A number, set or interval of the cloud cover % (0-100)",
			"title": "Cloud cover",
			"type": "integer"
		},
		"snowCover": {
			"description": "A number, set or interval of the snow cover % (0-100)",
			"title": "Snow cover",
			"type": "integer"
		},
		"lowestLocation": {
			"description": "A number, set or interval of the bottom height of datalayer (in meters).",
			"title": "Lowest location",
			"type": "number"
		},
		"highestLocation": {
			"description": "A number, set or interval of the top height of datalayer (in meters).",
			"title": "Lowest location",
			"type": "number"
		},
		"productVersion": {
			"description": "A string identifying the version of the Product.",
			"title": "Product version",
			"type": "string"
		},
		"productQualityStatus": {
			"description": "Must be provided if the product passed a quality check. Possible values: NOMINAL and DEGRADED.",
			"title": "Product quality status",
			"type": "string",
			"enum": [
				"NOMINAL",
				"DEGRADED"
			]
		},
		"productQualityDegradationTag": {
			"description": "Keywords giving information on the degradations affecting the product. Possible values are mission specific and can be freely define (e.g. 'RADIOMETRY', 'MISSING_LINES')",
			"title": "Product quality degradation tag",
			"type": "string"
		},
		"processorName": {
			"description": "A string identifying the processor software name",
			"title": "Processor name",
			"type": "string"
		},
		"processingCenter": {
			"description": "A string identifying the processing center (e.g. PDHS-E, PDHS-K, DPA, F-ACRI)",
			"title": "Processing center",
			"type": "string"
		},
		"creationDate": {
			"format": "date-time",
			"description": "The date when the metadata item was ingested for the first time (i.e. inserted) in the catalogue.",
			"title": "Creation date",
			"type": "string"
		},
		"modificationDate": {
			"format": "date-time",
			"description": "The date when the metadata item was last modified (i.e. updated) in the catalogue.",
			"title": "Modification date",
			"type": "string"
		},
		"processingDate": {
			"format": "date-time",
			"description": "A date interval requesting entries processed within a given time interval",
			"title": "Processing date",
			"type": "string"
		},
		"sensorMode": {
			"description": "A string identifying the sensor mode.",
			"title": "Sensor mode",
			"type": "string"
		},
		"archivingCenter": {
			"description": "A string identifying the archiving center.",
			"title": "Archiving center",
			"type": "string"
		},
		"processingMode": {
			"description": "Processing mode. Often referred to as Real Time, Near Real Time etc.",
			"title": "Processing mode",
			"type": "string"
		},
		"availabilityTime": {
			"format": "date-time",
			"description": "The time when the result became available (e.g. if postprocessing or laboratory analysis is required, it might be different to the phenomenonTime). dateTime in ISO 8601 format",
			"title": "Availability time",
			"type": "string"
		},
		"acquisitionStation": {
			"description": "A string identifying the station used for the acquisition.",
			"title": "Acquisition station",
			"type": "string"
		},
		"acquisitionSubType": {
			"description": "Acquisition sub-type.",
			"title": "Acquisition subtype",
			"type": "string"
		},
		"startTimeFromAscendingNode": {
			"description": "Start time of acquisition in milliseconds from Ascending node date.",
			"title": "Start time from ascending node",
			"type": "number"
		},
		"completionTimeFromAscendingNode": {
			"description": "Completion time of acquisition in milliseconds from Ascending node date.",
			"title": "Completion time from ascending node",
			"type": "number"
		},
		"illuminationAzimuthAngle": {
			"description": "Mean illumination/solar azimuth angle given in degrees. (i.e. uom='deg')",
			"title": "Illumination azimuth angle",
			"type": "number"
		},
		"illuminationZenithAngle": {
			"description": "Mean illumination/solar zenith angle given in degrees.",
			"title": "Illumination zenith angle",
			"type": "number"
		},
		"illuminationElevationAngle": {
			"description": "Mean illumination/solar elevation angle given in degrees. (i.e. uom='deg')",
			"title": "Illumination elevation angle",
			"type": "number"
		},
		"polarisationMode": {
			"description": "Polarisation mode taken from codelist: S (for single), D (for dual), T (for twin), Q (for quad), UNDEFINED",
			"title": "Polarisation mode",
			"type": "string",
			"enum": [
				"S",
				"D",
				"T",
				"Q",
				"UNDEFINED"
			]
		},
		"polarisationChannels": {
			"description": "Polarisation channel transmit/receive configuration: horizontal, vertical.",
			"title": "Polarisation channels",
			"type": "string",
			"enum": [
				"HH",
				"HV",
				"VH",
				"VV",
				"HH, VV",
				"HH, VH",
				"HH, HV",
				"VH, VV",
				"VH, HV",
				"VV, HV",
				"VV, VH",
				"HV, VH",
				"UNDEFINED"
			]
		},
		"antennaLookDirection": {
			"description": "Antenna look direction LEFT or RIGHT",
			"title": "Antenna look direction",
			"type": "string",
			"enum": [
				"LEFT",
				"RIGHT"
			]
		},
		"minimumIncidenceAngle": {
			"description": "Minimum incidence angle given in degrees (i.e. uom='deg')",
			"title": "Minimum incidence angle",
			"type": "number"
		},
		"maximumIncidenceAngle": {
			"description": "Maximum incidence angle given in degrees (i.e. uom='deg')",
			"title": "Maximum incidence angle",
			"type": "number"
		},
		"dopplerFrequency": {
			"description": "Doppler Frequency of acquisition",
			"title": "Doppler frequency",
			"type": "number"
		},
		"incidenceAngleVariation": {
			"description": "Incidence angle variation",
			"title": "Incidence angle variation",
			"type": "number"
		},
		"classifiedAs": {
			"format": "uri",
			"description": "{semantic:classifiedAs}",
			"title": "Classified as",
			"type": "string"
		}
	}
}