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首页> 美国政府科技报告 >Anvaendarhandledning Mfactor 1.0. (Mfactor 1.0 User Manual).
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Anvaendarhandledning Mfactor 1.0. (Mfactor 1.0 User Manual).

机译：anvaendarhandledning mfactor 1.0。 （mfactor 1.0用户手册）。

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摘要

This document is a user manual for the computer program Mfactor 1.0. Using the program, the M-factor for different ship types in an attack scenario or in a measurement situation can be calculated. The M-factor describes, for an extended target above a sea surface, the amplification of the radar cross section (RCS) due to multipath (i.e. constructive and destructive interference between direct path and sea surface reflected path in a radar-target scenario). The M-factor can be used to convert measured values to free space values (RCS values for the measured object without the reflecting sea surface). The simulation is based upon target data calculated in FOPOL (physical optics) as 1-dimensional ISAR data (distribution of radar cross section in elevation in different target aspect angles). CAD descriptions of the target have been the input to FOPOL. In the program Mfactor 1.0 a target (ship) and its orientation relative an observer (radar) is defined with parameters like: position of the object, the observers antenna, sea wave height, frequency, etc. RCS distributions and observer positions (observer trajectories) are stored in external ASCII files that can easily be modified by the user. There are two different modes in the program: target rotation and M-factor diagram. In the target rotation mode, the M-factor is presented with a fixed observer position during a rotation of the target. In the M-factor diagram mode, the M-factor is presented with a fixed oriented target while the observer following a 'attack' trajectory is closing in on the target.

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