User manual

Code: ENIGMA III User Manual
Edition: 1 Revision: 4
Date: 19/12/2008
Page: 2/97
Table of Contents
1 Introduction..................................................................................................................................................9
2 Algorithms..................................................................................................................................................10
2.1 Thresholding.......................................................................................................................................10
2.1.1 Noise Power threshold................................................................................................................11
2.1.2 CCOR threshold.........................................................................................................................11
2.1.3 SQI threshold..............................................................................................................................11
2.1.4 RHOHV Threshold.....................................................................................................................11
2.1.5 PhiDP SNR Threshold ...............................................................................................................11
2.1.6 Adjusting reflectivity thresholds................................................................................................12
2.1.7 Adjusting velocity thresholds.....................................................................................................17
2.1.8 Adjusting spectral width thresholds...........................................................................................19
2.2 Reflectivity and Doppler speckle remover........................................................................................19
2.3 Averaging............................................................................................................................................20
2.3.1 Time averaging...........................................................................................................................20
2.3.2 Range averaging.........................................................................................................................20
2.4 Doppler clutter filters.........................................................................................................................21
2.4.1 Time domain filtering.................................................................................................................21
2.4.2 Frequency domain filtering........................................................................................................23
2.5 Pulse-pair processing..........................................................................................................................26
2.6 DFT processing..................................................................................................................................27
2.7 FFT processing...................................................................................................................................28
2.8 Range-Doppler Dilemma...................................................................................................................29
2.9 Calibration..........................................................................................................................................30
2.10 Dynamic Angle Syncing...................................................................................................................31
2.11 Dual PRF Unfolding.........................................................................................................................32
2.12 Default values for the extended SDP parameter..............................................................................34
3 Network......................................................................................................................................................35
4 SDP settings................................................................................................................................................35
5 SDP interfaces............................................................................................................................................35
5.1 Command interface............................................................................................................................36
5.1.1 Connection..................................................................................................................................37
6 Parametrization...........................................................................................................................................38
6.1 Klystron related parameter.................................................................................................................41
6.1.1 KlystronGateDurationX.............................................................................................................41
6.1.2 KlystronGateStartX....................................................................................................................41
6.1.3 KlystronPulseDurationX............................................................................................................41
6.1.4 KlystronTaperingStartX.............................................................................................................42
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