| Revision 16,
1.3 KB
checked in by marcus, 15 years ago
(diff) |
|
r1 | svn | 2007-12-13 11:10:29 +0100 (Do, 13 Dez 2007) | 2 lines
Initial import
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| 1 | command procedure VESPA <slow1> <slow2> <slowstep> <azim> <power> |
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| 2 | ======================= |
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| 3 | |
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| 4 | key: cp:slowness vespagram |
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| 5 | |
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| 6 | Computes vespagram from all traces of the display. For each |
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| 7 | slowness value from <slow1> to <slow2> in steps of <slowsteps> |
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| 8 | a beam trace is computed (using azimuth <azim>). On the |
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| 9 | summation the <power>-th root process is applied. <power>=1 |
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| 10 | means plain summation. The input traces are hidden after execution |
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| 11 | of this procedure. To get them back, enter the command |
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| 12 | "display h:all". Each output trace corresponds to a slowness |
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| 13 | value. The slowness is given in the "comment"-entry of the |
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| 14 | trace. It is convenient to switch the trace info text to |
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| 15 | "comment" by the command "trctxt ^comment($x)". |
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| 16 | |
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| 17 | |
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| 18 | parameters |
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| 19 | ---------- |
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| 20 | |
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| 21 | <slow1>, <slow2> --- parameter type: real |
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| 22 | Slowness window. Units in deg/sec. |
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| 23 | |
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| 24 | <slowstep> --- parameter type: real |
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| 25 | Step size within slowness window. Unit in deg/sec. |
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| 26 | |
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| 27 | <azimuth> --- parameter type: real |
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| 28 | Beam azimuth in degrees. |
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| 29 | |
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| 30 | <power> --- parameter type: real |
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| 31 | Before each summation the <power>-th root of the input traces |
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| 32 | is computed. The result trace is then taken to the <power>-th |
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| 33 | power. |
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| 34 | |
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| 35 | |
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| 36 | examples |
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| 37 | -------- |
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| 38 | |
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| 39 | vespa 3.0 7.0 0.2 23.3 1. ! usual vespagram (plain summation) |
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| 40 | |
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| 41 | vespa 3.0 7.0 0.2 23.3 4. ! 4-th root process on each summation |
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| 42 | |
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