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Flashcards

10. SSR

Ella Davies RNAV English 93 cards

Cards in this deck (93)

  1. 1SSRsecondary surveillance radar
  2. 2what does the SSR consist ofa primary and secondary radar
  3. 3what does the secondary radar doeffectively asks question
    who
    altitude
    and waits for a reply
  4. 4which altitude is communicatedpressure altitude
  5. 5what does the SSR consist ofTrace trend
    ident flight level
  6. 6which part is responsible for the trace trendthe primary radar
  7. 7which part is responsible for the ident flight levelthe secondary radar
  8. 8how is speed givennot given but can be determined
  9. 9which speedground speed
  10. 10which radar is more reliable when it comes to bearing and distancethe primary radar
  11. 11What is a secondary radar based oninterrogator/transponder system
  12. 12MODE AAircrafts ident
  13. 13MODE Cflight level
  14. 14what modes and therefore basic informatino is provided by a basic SSRMODE A (AC ident)
    MODE C (FL)
  15. 15what frequencies are usedG to AC 1030 MHz
    AC to G 1090 Mhz
  16. 16describe P1 and P3the time interval between P1 and P3 determines the TYPE of interrogation
  17. 17what is the time period associated with MODE A8 microseconds
  18. 18what is the time period associated with MODE C21 microseconds
  19. 19what can you say about P2 and the direction of transmissionit is omnidirectional
  20. 20when is P2 sent2 microseconds after P1
  21. 21what does the side lobe suppression depend onthe amplitude of P2
  22. 22describe side lobe suppressionif the P2's amplitude is LESS than P1s (main lobe) - the ACs transponder will answer
    if the amplitude of P2 is MORE than P1 (in case of side lobes), the ACs transponder will not answer
  23. 23describe a MODE A / MODE C reply2 frame pulses F1 and F2 are 20.3 microseconds apart framing 12 pulses that can be transmitted or suppressed to from a binary code
  24. 24what is a SQUAWK codeone of the 4069 available codes allocated to the ATC to identify the AC
  25. 25what are the 3 special A codes7500
    7700
    7600
  26. 267500Hi jack - Unlawful interference
  27. 277600Radio communications Failure
  28. 287700emergency/distress
  29. 29What is Squawk charlieautomatic transmission of the AC flight level rounded to the nearest 100 ft (100 ft increments)
  30. 30what is displayed on the ATC scopeAC flight level (received data) or altitude (calculated from inserted QNH) rounded to the nearest 100 ft
  31. 31what is the reply accuracy300 ft required by regulation
  32. 32how is the A code displayeda sequence of 4 digits from 0-7 (2^3) for a total of 4096 available codes (2^12)
  33. 33what are the different selector modes (5)OFF
    STBY
    ON
    ALT
    TEST
  34. 34OFFsystem not powered
  35. 35STBYsystem powered by not replying
  36. 36ONsystem replying MODE A interrogations only
  37. 37ALTsystem replying to mode A and C interrogations
  38. 38TESTself check of the system
  39. 39describe the SQUAWK ident Procedureon ATC request
    pilot presses ident button
    a SPI is transmitted after F2 for 20 seconds
  40. 40what is the ident used forto help ATC identify AC on their scope
    acknowledge clearance in case of radio communication failure
  41. 41define garblingsuperimposition of 2 AC answers making both unreadable.
  42. 42when can garbling occurwhen 2 aircraft are in the same direction and spaced less than 1.7 nm apart (slant range)
  43. 43FRUITfalse replies unsynchronised to interrogator transmissions
  44. 44when does fruiting occurwhen the receiver catches replies from other SSR
  45. 45Define ghost targetsechoes misplaced on the ATC scope due to multipath
  46. 46how long is the pulse itself0.8 microseconds
  47. 47what is the relative amount of power in the main beam compared to the sidelobesmore power in the main beam compared to the sidelobes
  48. 48Mode C - how many pulses12 pulses
  49. 49what is the datum used for mode C1013.2 mb
  50. 50what is the max height available in MODE C128000ft
  51. 51what is the minimum height that can be sent by the transponder-1000 ft
  52. 52what mode can you not havejust Mode C
    MODES include : A
    A/C
  53. 53when will STBY be usedfor a change in digits/codes
  54. 54what are the main advantages of the SSR-longish range
    -no clutter or unwanted echos from building
    -reply gives lots of information
    - little effort required from pilot
    no manoeuvres required
    reduced communications
    less power required
  55. 55how many dimensions does garbling happen in3 dimensions, all directions
  56. 56interrogations can be described as whatdirectional
  57. 57answer can be described as whatomnidirectional
  58. 58what are the other disadvantages associated with SSRfuselage shielding antenna
    only 4096 codes available
  59. 59how many S codes are theremore than 16 000 000 - 24 bits
  60. 60what is different about the Mode S interrogatortransmits and identifier code
  61. 61ICidentifier code
  62. 62what is the altitude increment of mode s25 ft
  63. 63define a TCAS squitterbroadcast transmission containing the AC address
  64. 64what is the all-call modefor capturing new S mode traffic in the area
  65. 65what is the broadcast modetransmission of information to all mode S transponders, no replies
  66. 66what is the Selective modefor interrogating a single AC, used most commonly
  67. 67selective mode can also be called whatroll call mode
    mode period
  68. 68what are the two different types of Intermodesmode A/C/S all-call
    mode A/C only all call
  69. 69describe A/C/S all callto elicit responses from A/C mode transponders, and for acquisition of new S mode transponders (long P4)
  70. 70describe A/C only all callelicit replies of mode A/C transponders. Mode S transponders do not reply (short P4)
  71. 71describe mode S interrogationsdata pulse P6 with internal phase modulation
  72. 72what is the control pulse P used asa side lobe suppressor
  73. 73describe mode S repliesconsists of preamble and a data BLOCK
  74. 74how many possible forms does the reply message have25 possible forms
  75. 75what is provided to the ATCposition
    Altitude
    Ident
  76. 76what is the surveillance identifier code capacityautomatic reporting of aircraft identification, as specified in ICAO flight plan item 7, known as ICAO level 2's
  77. 77when is the operation with antenna diversity mandatorymaximum mass is above 5.7 tonnes
    maximum cruising speed is above 250 kts
  78. 78what is the protocol is elementary service based onground initiated Comm-B protocol
  79. 79what does enhanced surveillance consist ofextraction of additional parameters
  80. 80what are these additional parameters known asdownlink aircraft parameters
  81. 81what are the main benefits of the enhanced surveillancebetter SA for ATC
    reduced Rx/Tx workload
    reduced pilot and ATC workload
    removal of potential sources of error
  82. 82what is P5the control pulse or the pulse modulation
  83. 83which mode has additional pulsesIntermode
  84. 84what is used for mode S interrogationsDPSK
  85. 85DPSKdifferential phase shift keying
  86. 86what is an advantage of DPSK-spread spectrum so immune to interference
    -no interference to mode A/C - coexsist
    - allows up to 4 MBs of data
  87. 87what can elementary surveillance be split up intominimum surveillance functionality
    downlink aircraft parameters
  88. 88what are the Mode S comms protocolsComm A - Comm B
    Comm C - Comm D
  89. 89Comm Ashort interrogation (question)
  90. 90Comm Bshort (elementary surveillance) reply
  91. 91Comm Clong interrogation (extended length)
    (question)
  92. 92Comm Dreply - long (extended length)
  93. 93what different information can be provided by the enhanced surveillanceRoll angle
    VS
    IAS
    Mach no
    GS
    Track Angle

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Description
RNAV Flashcards on 10. SSR, created by Ella Davies on 19/05/2018.
Created by
Ella Davies · May 2018
Updated
May 20, 2018
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