USER’S MANUAL__________________________________________________________________
286 _________________________________________________________________ M211322EN-D
When the TSOUT bits select "Power Spectrum" then, depending on the
current major mode, a further choice may be needed to select one of several
spectral view points. For the Random Phase major mode the possible
values of "Sub Type" are:
When the TSOUT bits select "Time Series" then, a further choice may be
needed to select the time series from the first or second pulse when using
the Hybrid Pulse Compression scheme. For the Random Phase major mode
the possible values of "Sub Type" are:
When time series output is selected the output data consist either of
(3xBxN) or (2xBxN) words, depending on the output format, where B is
the number of bins in the current range mask and N is the number of pulses
per ray. Data samples for each bin of pulse #1 are output first, followed by
those for each bin of pulse #2, etc. up to pulse #N. In other words, the data
are output in the same time-order that they were acquired.
In the floating point format, three words are used for each bin:
0916-113
To convert these "legacy format" floating I and Q samples to voltages:
First create a 12-bit signed integer in which bits zero through nine are
copied from the Mantissa field, and bits ten and eleven are either 01 or 10
depending on whether S is 0 or 1. Then, multiply this number by
2**(exponent-40), where the exponent field is interpreted as an unsigned
5-bit integer. Finally multiply by the maximum voltage. The resulting
0: Raw First Trip 4: Raw Second Trip
1: Whitened First Trip 5: Whitened Second Trip
2: Cleaned First Trip 6: Cleaned Second Trip
3: Final First Trip 7: Final Second Trip
0: Main pulse time series
1: Second pulse time series (if hybrid pulse)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
| | | | | | | | | | | | | | | | |
| Exponent | S | Mantissa | (I)
|___________________|___|_______________________________________|
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
| | | | | | | | | | | | | | | | |
| Exponent | S | Mantissa | (Q)
|___________________|___|_______________________________________|
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
| | | | | | | | | | | | | | | | |
| 0 0 0 0 | Log of Power in Sample | (LOG)
|_______________|_______________________________________________|
To Next Page
Loading...