A dataset provided by the European Space Agency

Name CH1ORB-L-SARA-2-NPO-EDR-SWIM
Mission CHANDRAYAAN-1
URL ftp://psa.esac.esa.int/pub/mirror/pub/mirror/CHANDRAYAAN-1/SARA/CH1ORB-L-SARA-2-NPO-EDR-SWIM-V1.0
DOI https://doi.org/10.5270/esa-f282cwo
Abstract This dataset contains the RAW data of the SWIM sensor of the SARA instrument from the NPO of the CHANDRAYAAN-1 mission.
Description Contents 1 Data set description 1.1 Data set overview 1.2 Parameters 1.3 Processing 1.4 Data 1.5 Ancillary data 1.6 Software 1.7 Media/Format 1.8 Review 1.9 Data quality 2 Confidence level note 2.1 Confidence level overview 2.2 Review 2.3 Data quality 1. Data set description 1.1. Data set overview SWIM is an ion-mass analyser and hence the output data of SWIM sensor is basically ion counts in varoius energy, direction and mass bins. One full maesurement cycle of SWIM is 8s.The data coming from the sensor is being sorted by look-up tables and is being sorted into into two types of accumulation matrixes (the accumulation matrix and the accumulation scaling matrix) during one cycle of measurement. The accumulation matrix size changes depending on the binning parameters (energy, Deflection and mass bins).For details on the SWIM sensor of the SARA experiment and the data products, see the EAICD in the `DOCUMENT' directory. 1.2. Parameters The measured parameter is basically raw ion counts. 1.3. Processing No processing beyond unpacking has been applied to the telemetry data. 1.4. Data Each data product contains all data from one orbit. The data product contain housekeeping data as well as science data as scaling matrix(total counts) and accumulation matrix. SWIM data is archived using the storage format of PDS ARRAY of COLLECTION objects.Each SWIM PDS data product file contains an ARRAY of records of SWIM measurements in one orbit. Each record is described using a COLLECTION object.A PDS SWIM COLLECTION object groups all data related to one measurement:SWIM parameters (start time, compression mode, cycles of integration, etc.), reassembled house-keeping parameters in the header of the science data, the accumulation scaling matrix (counter data summed during a sampling period) and the accumulation matrix(event data integrated during a sampling period).If the binning parameters change within an orbit, the number of elements...
Instrument SARA
Temporal Coverage 2008-12-08T11:32:57Z/2009-08-13T23:41:56Z
Version V1.0
Mission Description Mission Overview Chandrayaan-1, the first Indian mission to Moon, was designed to carry out high resolution remote sensing studies of the Moon to further our understanding about its origin and evolution. Chandrayaan-1 was launched on October 22, 2008 by PSLV-C11 at 00:52 UT from SDSC, SHAR. The lift-off and dry mass break-up is as follows: Lift-off mass : 1380 kg Dry mass : 560 kg Propellant mass : 818.2 kg Pressurant mass : 2.84 kg The launch of the spacecraft was planned such that the Moon is at one of its nodes when the Spacecraft arrives there. In order to have multiple launch opportunities every month and to contain burn errors, the phasing loop strategy with multiple loops and five Earth bound maneuvers is adopted. The injection parameters are as follows: Semimajor axis : 17971.73 km Eccentricity : 0.63094 Inclination : 17.9112 deg Perigee height : 254.457 km Apogee height : 22932.741 km The details of five Earth bound manuevers, lunar insertion manuever and circularization manuevers are given below: ..-------------------------------------------------------------------------------------. | BURN | CENTRAL BODY | Perigee No | deltaV(m/s) | Dur (S) | Post Manuever orbit | | | | | | | prg X apg (km) | ..--------|--------------|-------------|-----------------------------------------------. | | | | | | | | EBN #1 | Earth | 4 | 344.43 | | 299.2 X 37908.1 | | | | | | | | | EBN #2 | Earth | 8 | 328.14 | 912.36 | 336.3 X 74715.6 | | | | | | | | | EBN #3 | Earth | 9 | 221.69 | 567.73 | 347.8 X 165015.1 | | | | | | | | | EBN #4 | Earth | 10 | 77.17 | 192.18 | 459.4 X 266612.9 | | | | | | | | | EBN #5 | Earth | 11 | 60.70 | 147.68 | 972.8 X 379859.2 | | | | | | | | | TCM | Earth | | 0.82 | 5.59 | 802.8 X 378499.2 | ..--------|--------------|-------------|-----------------------------------------------. | | | | | | | | LOI | Moon | - | 366.96 | 817.07 | 507.9 X 7510.1 | | | | | | | | | LBN #1 | Moon | - | 26...
Creator Contact ANIL BHARDWAJ/STAS BARABASH
Date Published 2010-03-31
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2010-03-31, CH1ORB-L-SARA-2-NPO-EDR-SWIM, V1.0. https://doi.org/10.5270/esa-f282cwo