ska phase 1 system requirements specification - The Square ...

WP2‐005.030.000‐SRS‐002Revision : BTABLE OF CONTENTS1 INTRODUCTION ............................................................................................. 71.1 Purpose and scope of the document ...................................................................................... 71.2 Notes on document format..................................................................................................... 72 REFERENCES ................................................................................................. 82.1 Applicable documents ............................................................................................................. 82.2 Reference documents ............................................................................................................. 83 FUNCTIONAL AND PERFORMANCE REQUIREMENTS ................................................. 93.1 Functional Overview ............................................................................................................... 93.2 Science Requirements Derivation ......................................................................................... 113.3 Spectral Characteristics ......................................................................................................... 133.3.1 Operating Frequency ..................................................................................................... 133.3.2 Instantaneous Bandwidth ............................................................................................. 133.3.3 Number, width and placement of station output bands .............................................. 143.3.4 Spectral flatness ............................................................................................................ 143.3.5 Spectral Resolution ....................................................................................................... 153.3.6 Spectral Dynamic Range ................................................................................................ 163.4 SKA 1 Sensitivity and Survey requirements ............................................................................ 163.4.1 Sensitivity ...................................................................................................................... 163.4.2 Survey speed ................................................................................................................. 163.4.3 Survey ‘On‐Sky’ time ..................................................................................................... 173.4.4 Deep Field Integration Time .......................................................................................... 173.5 Baseline requirements .......................................................................................................... 173.6 Temporal characteristics ....................................................................................................... 183.6.1 Main beam stability ....................................................................................................... 183.6.2 Temporal resolution ...................................................................................................... 183.6.3 Spatial side‐lobe stability .............................................................................................. 183.6.4 Beam‐switching agility .................................................................................................. 183.6.5 Frequency switching agility ........................................................................................... 193.7 Polarisation characteristics ................................................................................................... 193.8 RFI avoidance ........................................................................................................................ 203.9 Imaging characteristics .......................................................................................................... 203.9.1 Instantaneous field of view ........................................................................................... 203.9.2 Imaging dynamic range ................................................................................................. 203.9.3 Pointing accuracy .......................................................................................................... 213.9.4 Pointing estimation accuracy ........................................................................................ 213.10 Monitoring and Control (M&C) Function .............................................................................. 213.10.1 Top‐level requirements ................................................................................................. 213.10.2 Control requirements .................................................................................................... 243.10.3 Monitoring requirements .............................................................................................. 253.11 Data Acquisition Characteristics ........................................................................................... 262011‐02‐14 Page 3 of 58