BepiColombo Laser Altimeter (BELA) bundle
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This bundle contains data and documentation from the BepiColombo Laser Altimeter (BELA) mounted on the Mercury Planetary Orbiter (MPO). 
It contains the following primary data collections:

	data_raw: BELA raw data products are intended to store BELA measurement data in a form close to the telemetry data received from the 
	           spacecraft. Unique time stamps are generated from the set of clock counts contained in the telemetry data. Types of data are: 
	           1) Altimetry Data Records (ADR): each containing data from one Mercury orbit, in binary tables;
	           2) Correlation window sample tables (CWS): they are produced when PULSE or SENSOR data records are included in the telemetry data; 
	           3) Range window sample tables (RWS): they are produced when SENSOR or ALBEDO data records are included in the telemetry data.
               ADR and CWS tables can include receiver parameters (Rx) and ranging parameters for up to four alternative return pulse candidates.
	
	data_calibrated: Data values are given in physical units, where applicable. The Calibrated product includes two preliminary ranging 
	           parameters in PULSE mode data records: the NominalTimeOfFlight, providing the measured time difference in milliseconds 
	           between emitted and return pulse, according to the nominal value for the sampling rate applied for recording the return pulse; 
	           and the CoarseRange, providing the measured distance to the surface in kilometers, according to NominalTimeOfFlight, 
	           and not considering the relative motion between s/c and target. As for the Raw product, Rx parameters and ranging parameters 
	           for up to four alternative return pulse candidates can be present.
               BELA Calibrated CWS and RWS tables, if present, contain the sensor samples available also in the corresponding table of the Raw product, 
               now corrected for electronic offsets and normalized according to the gain factor applied by the analog electronics unit (AEU).

	browse_derived: Browse products generated for derived data

	data_derived: Three categories of BELA Derived products can be distinguished, based on the type and coverage (both spatial and temporal) 
	               of required input data:
	               - Calibrated geo-located altimetry data records result from the combination of BELA Calibrated data with external data on 
	                   spacecraft position and attitude. 
                   - Results from analysis of an aggregated and, ultimately, global BELA data set. 
                   - Results from joint analysis of BELA data with observational data from other scientific instruments.

	document: documents necessary for the use and interpretation of the data


Each document and data product in this bundle is described by a PDS4 label in a separate file with the same name but with the extension XML. 
PDS4 labels are XML (eXtended Markup Language) files that conform to the PDS4 Information Model XML schema at 
https://pds.nasa.gov/pds4/schema/released/. They are best viewed in an XML-aware text editor, and may be used by software that 
can manipulate XML documents.

See these sources for more information.

- For information about PDS4, see https://pds.nasa.gov/pds4/about/

Additional information can be found in the bundle and collection labels and document collection.