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（３）Use of past measurement data
In this system, it is possible to read the data file of the reference and the target previously measured and saved. (You
can only read CSV files.)
For example, it can be used to read past reference data and measure the RCS of a new target based on it.
To read the data file, follow the procedure below.
①Select "Open" from the "File" menu on the main screen and open the saved file.
②Since the file is reproduced in the state immediately after the file is measured on the main screen, all operation /
RCS calculation described in 7 above becomes possible. However, 0 m point correction value, distance range,
rectangular range, target distance, RCS calculation result are read from the reproduced CSV data and displayed, but
the REF data is not read and the previous reference value of the IM radar display software was acquired The data
of time is left. To reproduce the REF data that acquired the reference value and measure the RCS of another target,
correctly input the measured distance of the reference value on the REF reproduction screen, and then input the
reference value acquisition button without changing the distance range and rectangular range After clicking to reflect
the REF, read the CSV file of another target, specify the distance range, the rectangular range, the target distance
and then measure the RCS. Please click the Recalculate button when changing distance range.
８． Difference between Total RCS and Peak RCS
（１）Peak RCS value calculation method
The method of using the maximum reflection level in the rectangular range and distance (time) range for calculation
as the RCS of that target. Specifically, convert the I and Q components of each cell selected in the rectangular range
and distance (time) range to amplitude, and select the maximum amplitude max from among them. Calculate the RCS
value by converting the amplitude max to the power value and then comparing it with the REF power value.
（２）Calculation method of Total RCS value
It is a calculation method that takes into consideration that I and Q signals received at the same time in the selected
rectangular range and distance (time) range should be phased. When the distance between the radar and the target is
long, the I and Q signals at the same time on the entire target are phase synthesized. If the distance is short, the I and
