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<p>radar system, there is no dedicated transmitter.  Instead, the receiver uses third-party transmitters in the environment and measures the time difference of arrival between the signal arriving directly from the transmitter and the signal arriving via reflection from the object.  This allows the <a href="page.php?w=bistatic_range">bistatic range</a> of the object to be determined.  In addition to the bistatic range, a passive radar will typically also measure the <a href="page.php?w=bistatic_Doppler_shift">bistatic Doppler shift</a> of the echo</p><p>
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