Supported ENVISAT Products |

## chirp parameters

Fields of ENVISAT ASAR_Chirp_ADSR Records

Index | Identifier | Field Type | Field Length | Description | Units
0 | `"zero_doppler_time"` | MJD | 1 | Zero Doppler azimuth time in azimuth at which estimate applies | MJD
1 | `"attach_flag"` | UChar | 1 | Attachment Flag (always set to zero for this ADSR) | flag
2 | `"beam_id"` | String | 1 | Beam ID: SS1, SS2, SS3, SS4, or SS5 for WS and GM images. Set to NSØ for AP, IM, and WV images. | ascii
3 | `"polar"` | String | 1 | Tx/Rx polarization H/H, H/V, V/V, or V/H | ascii
4 | `"chirp_width"` | Float | 1 | 3-dB pulse width of chirp replica cross-correlation function between reconstructed chirp and nominal chirp | samples
5 | `"chirp_sidelobe"` | Float | 1 | First side lobe level of chirp replica cross-correlation function between reconstructed chirp and nominal chirp | dB
6 | `"chirp_islr"` | Float | 1 | ISLR of chirp replica cross-correlation function between reconstructed chirp and nominal chirp | dB
7 | `"chirp_peak_loc"` | Float | 1 | Peak location of cross-correlation function between reconstructed chirp and nominal chirp | samples
8 | `"chirp_power"` | Float | 1 | Chirp power | dB
9 | `"elev_corr_factor"` | Float | 1 | Elevation gain correction scaling factor applied to range compressed samples | -
10 | `"spare_1"` | Spare | 1 | Spare | -
11 | `"cal_pulse_info.1.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 1) | -
12 | `"cal_pulse_info.1.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 1) | -
13 | `"cal_pulse_info.1.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 1) | -
14 | `"cal_pulse_info.1.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 1) | degrees
15 | `"cal_pulse_info.2.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 2) | -
16 | `"cal_pulse_info.2.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 2) | -
17 | `"cal_pulse_info.2.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 2) | -
18 | `"cal_pulse_info.2.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 2) | degrees
19 | `"cal_pulse_info.3.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 3) | -
20 | `"cal_pulse_info.3.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 3) | -
21 | `"cal_pulse_info.3.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 3) | -
22 | `"cal_pulse_info.3.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 3) | degrees
23 | `"cal_pulse_info.4.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 4) | -
24 | `"cal_pulse_info.4.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 4) | -
25 | `"cal_pulse_info.4.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 4) | -
26 | `"cal_pulse_info.4.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 4) | degrees
27 | `"cal_pulse_info.5.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 5) | -
28 | `"cal_pulse_info.5.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 5) | -
29 | `"cal_pulse_info.5.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 5) | -
30 | `"cal_pulse_info.5.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 5) | degrees
31 | `"cal_pulse_info.6.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 6) | -
32 | `"cal_pulse_info.6.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 6) | -
33 | `"cal_pulse_info.6.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 6) | -
34 | `"cal_pulse_info.6.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 6) | degrees
35 | `"cal_pulse_info.7.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 7) | -
36 | `"cal_pulse_info.7.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 7) | -
37 | `"cal_pulse_info.7.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 7) | -
38 | `"cal_pulse_info.7.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 7) | degrees
39 | `"cal_pulse_info.8.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 8) | -
40 | `"cal_pulse_info.8.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 8) | -
41 | `"cal_pulse_info.8.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 8) | -
42 | `"cal_pulse_info.8.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 8) | degrees
43 | `"cal_pulse_info.9.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 9) | -
44 | `"cal_pulse_info.9.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 9) | -
45 | `"cal_pulse_info.9.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 9) | -
46 | `"cal_pulse_info.9.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 9) | degrees
47 | `"cal_pulse_info.10.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 10) | -
48 | `"cal_pulse_info.10.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 10) | -
49 | `"cal_pulse_info.10.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 10) | -
50 | `"cal_pulse_info.10.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 10) | degrees
51 | `"cal_pulse_info.11.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 11) | -
52 | `"cal_pulse_info.11.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 11) | -
53 | `"cal_pulse_info.11.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 11) | -
54 | `"cal_pulse_info.11.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 11) | degrees
55 | `"cal_pulse_info.12.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 12) | -
56 | `"cal_pulse_info.12.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 12) | -
57 | `"cal_pulse_info.12.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 12) | -
58 | `"cal_pulse_info.12.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 12) | degrees
59 | `"cal_pulse_info.13.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 13) | -
60 | `"cal_pulse_info.13.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 13) | -
61 | `"cal_pulse_info.13.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 13) | -
62 | `"cal_pulse_info.13.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 13) | degrees
63 | `"cal_pulse_info.14.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 14) | -
64 | `"cal_pulse_info.14.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 14) | -
65 | `"cal_pulse_info.14.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 14) | -
66 | `"cal_pulse_info.14.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 14) | degrees
67 | `"cal_pulse_info.15.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 15) | -
68 | `"cal_pulse_info.15.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 15) | -
69 | `"cal_pulse_info.15.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 15) | -
70 | `"cal_pulse_info.15.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 15) | degrees
71 | `"cal_pulse_info.16.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 16) | -
72 | `"cal_pulse_info.16.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 16) | -
73 | `"cal_pulse_info.16.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 16) | -
74 | `"cal_pulse_info.16.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 16) | degrees
75 | `"cal_pulse_info.17.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 17) | -
76 | `"cal_pulse_info.17.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 17) | -
77 | `"cal_pulse_info.17.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 17) | -
78 | `"cal_pulse_info.17.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 17) | degrees
79 | `"cal_pulse_info.18.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 18) | -
80 | `"cal_pulse_info.18.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 18) | -
81 | `"cal_pulse_info.18.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 18) | -
82 | `"cal_pulse_info.18.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 18) | degrees
83 | `"cal_pulse_info.19.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 19) | -
84 | `"cal_pulse_info.19.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 19) | -
85 | `"cal_pulse_info.19.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 19) | -
86 | `"cal_pulse_info.19.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 19) | degrees
87 | `"cal_pulse_info.20.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 20) | -
88 | `"cal_pulse_info.20.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 20) | -
89 | `"cal_pulse_info.20.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 20) | -
90 | `"cal_pulse_info.20.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 20) | degrees
91 | `"cal_pulse_info.21.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 21) | -
92 | `"cal_pulse_info.21.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 21) | -
93 | `"cal_pulse_info.21.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 21) | -
94 | `"cal_pulse_info.21.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 21) | degrees
95 | `"cal_pulse_info.22.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 22) | -
96 | `"cal_pulse_info.22.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 22) | -
97 | `"cal_pulse_info.22.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 22) | -
98 | `"cal_pulse_info.22.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 22) | degrees
99 | `"cal_pulse_info.23.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 23) | -
100 | `"cal_pulse_info.23.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 23) | -
101 | `"cal_pulse_info.23.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 23) | -
102 | `"cal_pulse_info.23.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 23) | degrees
103 | `"cal_pulse_info.24.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 24) | -
104 | `"cal_pulse_info.24.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 24) | -
105 | `"cal_pulse_info.24.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 24) | -
106 | `"cal_pulse_info.24.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 24) | degrees
107 | `"cal_pulse_info.25.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 25) | -
108 | `"cal_pulse_info.25.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 25) | -
109 | `"cal_pulse_info.25.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 25) | -
110 | `"cal_pulse_info.25.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 25) | degrees
111 | `"cal_pulse_info.26.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 26) | -
112 | `"cal_pulse_info.26.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 26) | -
113 | `"cal_pulse_info.26.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 26) | -
114 | `"cal_pulse_info.26.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 26) | degrees
115 | `"cal_pulse_info.27.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 27) | -
116 | `"cal_pulse_info.27.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 27) | -
117 | `"cal_pulse_info.27.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 27) | -
118 | `"cal_pulse_info.27.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 27) | degrees
119 | `"cal_pulse_info.28.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 28) | -
120 | `"cal_pulse_info.28.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 28) | -
121 | `"cal_pulse_info.28.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 28) | -
122 | `"cal_pulse_info.28.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 28) | degrees
123 | `"cal_pulse_info.29.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 29) | -
124 | `"cal_pulse_info.29.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 29) | -
125 | `"cal_pulse_info.29.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 29) | -
126 | `"cal_pulse_info.29.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 29) | degrees
127 | `"cal_pulse_info.30.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 30) | -
128 | `"cal_pulse_info.30.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 30) | -
129 | `"cal_pulse_info.30.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 30) | -
130 | `"cal_pulse_info.30.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 30) | degrees
131 | `"cal_pulse_info.31.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 31) | -
132 | `"cal_pulse_info.31.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 31) | -
133 | `"cal_pulse_info.31.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 31) | -
134 | `"cal_pulse_info.31.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 31) | degrees
135 | `"cal_pulse_info.32.max_cal"` | Float | 3 | Max of Cal pulses 1, 2, and 3 amplitude (record 32) | -
136 | `"cal_pulse_info.32.avg_cal"` | Float | 3 | Average of Cal pulse 1, 2, and 3 amplitude over the 3 dB on either side of the max amplitude (record 32) | -
137 | `"cal_pulse_info.32.avg_val_1a"` | Float | 1 | Average of Cal pulse 1A over the sample window (record 32) | -
138 | `"cal_pulse_info.32.phs_cal"` | Float | 4 | Extracted phase for calibration pulse 1, 1A, 2, and 3 (record 32) | degrees
139 | `"spare_2"` | Spare | 1 | Spare | -