| 1 | * Description IQDW sample file 17151-1.iqdw
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| 2 |
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| 3 | Little Endian!!!
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| 4 |
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| 5 |
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| 6 | ** Global Frame Header (6 x 32 Bit) Offset 0x00000000
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| 7 |
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| 8 | *** 32 Bit Magic word 0x726574fb = 0xfb746572 next magic bytes found at offsets
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| 9 |
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| 10 | 0x0000 (0000)
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| 11 | 0x019c (412)
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| 12 | 0x037c (892)
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| 13 | 0x0574 (1396)
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| 14 | 0x0880 (2176)
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| 15 | 0x0be0 (3040)
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| 16 | 0x1010 (4112)
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| 17 | 0x1454 (5204)
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| 18 |
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| 19 |
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| 20 | *** 32 Bit Frame length in 32 bit words
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| 21 |
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| 22 | 0x67000000 = 0x00000067 = Integer 103 * 4 bytes = 412 Bytes = 0x019c
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| 23 |
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| 24 |
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| 25 | *** 32 Bit Running Frame number
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| 26 |
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| 27 | 0xd3122800 = 0x002812d3 = Integer 2626259
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| 28 |
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| 29 |
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| 30 | *** 32 Bit Frame Type
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| 31 |
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| 32 | 0x02000000 = 0x00000002 = Integer 2
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| 33 |
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| 34 |
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| 35 | *** 32 Bit Data Header length in 32 bit words
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| 36 |
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| 37 | 0x13000000 = 0x00000013 = Integer 19 * 4 = 76 Bytes
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| 38 |
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| 39 |
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| 40 | *** 32 Bit Reserved
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| 41 |
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| 42 | 0x01000000 = 0x00000001 = Integer 1
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| 43 |
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| 44 |
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| 45 | ** Ammos Data header 76 bytes
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| 46 |
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| 47 | 4 Bytes Block count
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| 48 | 4 Bytes Block Length
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| 49 | 8 Bytes timestamp
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| 50 |
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| 51 | 0x203546b4 0x00000000 = 0x00000000 0xb4463520 = possible center frequency 3.024.500.000 Hz
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| 52 | 0x286bee00 = 0x00ee6b28 = possible bandwidth 15.625.000 Hz
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| 53 | 0x00a02526 = 0x2625a000 = possible sample rate 640000000 Hz
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| 54 |
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| 55 | ** Tx Block (Frame length - Data Header - Global Frame header)
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| 56 |
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| 57 | *** 32 Bytes PDW
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| 58 | *** n samples * 4 bytes
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| 59 |
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| 60 | ** PDW Data Header (2 x 32 Bit = 8 bytes) Offset 0x00000018
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| 61 |
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| 62 | *** 32 Bit Number of PDWs in Frame
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| 63 |
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| 64 | 0x01000000 = 0x00000001 = Integer 1
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| 65 |
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| 66 | *** 32 Bit Size of tx block in 32 bit words
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| 67 |
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| 68 | 0x4d000000 = 0x0000004D = 77 * 4 = 308 Bytes
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| 69 |
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| 70 |
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| 71 | ** PDW Data Body (8 x 32 Bit = 32 bytes) Offset 0x00000050 next is 1ec (diff = 412)
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| 72 |
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| 73 | *** 64 Bit Unix time
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| 74 |
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| 75 | next time stamp at 01bc = 144 bytes
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| 76 |
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| 77 | 0x52b0837b
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| 78 | 0x0492c414
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| 79 |
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| 80 | vs
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| 81 |
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| 82 | 0x14c49204
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| 83 | 0x7b83b052
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| 84 |
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| 85 | Integer 1496481524143599698 nanoseconds = 2017-06-03 09:18:44
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| 86 |
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| 87 | *** 32 Bit Center Frequency
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| 88 |
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| 89 | 0x00000000 = 0x00000000 = Integer 0 - no valid frequency
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| 90 |
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| 91 | *** 32 Bit Flags/Marks
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| 92 |
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| 93 | 0x00000000 = 0x00000000 = Integer 0 - invalid
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| 94 |
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| 95 | *** 32 Bit BW/Level (00000000)
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| 96 | 32 Bit IO_DFE_Mod_Chip_Low (b4463520)
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| 97 | 32 Bit POL_DFQ_EOA_AOA_Low (00000000)
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| 98 | 32 Bit Reserved (00ee6b28)
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| 99 |
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| 100 | *** 32 Bit IO_DFE_Mod_Chip_Low
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| 101 |
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| 102 | 1-011010-00100-0110001101010010-0000
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| 103 |
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| 104 | IO Flag - 1 (inside of region of interest)
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| 105 | Azimuth confidence 011010 (0.0-6.2 degree in steps of 0.1 degree)
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| 106 | Modulation ID 00100 (PSK-2)
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| 107 | Reserved 0110001101010010
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| 108 | Sector reference 0000
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| 109 |
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| 110 | *** 32 Bit POL_DFQ_EOA_AOA_Low
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| 111 |
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| 112 | to be done
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| 113 |
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| 114 | *** 32 Bit Reserved and channel number
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| 115 |
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| 116 | 000000-00111011100110101100101000
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| 117 |
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| 118 | Number of channel (000000)
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| 119 |
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| 120 | to be done
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| 121 |
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| 122 |
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| 123 | ** Offset 0x00000040
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| 124 |
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| 125 | ** 348 Bytes unidentified
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| 126 | *** 12*4 AMMOS Data header? 48 Bytes
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| 127 | *** 32 Bytes PDW (see ppdw.org)
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| 128 | *** n * 4 bytes IQ samples (maybe n=67)
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| 129 |
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| 130 | ** Next global frame header Offset 0x0000019c = Integer 412
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| 131 |
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| 132 | ** AMMOS Frame header (24 bytes)
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| 133 |
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| 134 |
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| 135 | 32 Bit Magic Word (fb746572)
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| 136 | 32 Bit Frame length
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| 137 | 32 Bit Running Frame number
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| 138 | 32 Bit Frame Type (00000002)
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| 139 | 32 Bit Data Header length
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| 140 | 32 Bit Reserved (00000001)
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| 141 |
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| 142 |
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| 143 | ** AMMOS Data header (48 bytes)
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| 144 |
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| 145 | 64 Bit Frequency
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| 146 |
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| 147 | Low 0x00a02526 = 0x2625a000
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| 148 | High 0x01000000 = 0x00000001
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| 149 |
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| 150 | Integer = 4.934967296 GHz
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| 151 |
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| 152 | 32 Bit Bandwidth (00000020) 32 Hz
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| 153 | 32 Bit Sample rate (000004bd) 1213 Hz
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| 154 | 32 Bit Interpolation / Decimation (7b83b052)
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| 155 | 32 Bit Antenna Voltage Ref (14c49204)
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| 156 | 32 Bit Start time low (00000000)
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| 157 | 32 Bit Start time high (00000000)
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