Modulating signal description

0496-EX-ST-2007 Text Documents

Intermap Technologies, Inc.

2007-10-01ELS_84907

MODULATING SIGNAL DESCRIPTION

For the TopoSAR L Airborne Radar System

The TopoSAR L airborne radar system transmits pulses of duration 5 to 10 microseconds at a
pulse repetition frequency of about 17 kHz. The modulation on all pulses is identical, but the
polarization alternates between horizontal and vertical. The transmitted signal occupies a
bandwidth of 135 MHz. The modulating signal is linear‐FM; during each pulse, the
instantaneous frequency sweeps linearly from 1.2575 to 1.3925 GHz. There is no significant
amplitude modulation, other than a slight tapering of the rising and falling edges of the pulses.

Document Created: 2007-10-01 16:52:18
Document Modified: 2007-10-01 16:52:18

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