| 1. | Recently, his main area of research has been in airborne passive radars.
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| 2. | Passive radar depends upon the object sending a signal to the receiver.
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| 3. | The new technology, called passive radar, watches signals from common cell phone transmissions.
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| 4. | :* Passive RADAR detects signals emitted or reflected off the plane from other sources.
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| 5. | Kh-31P passive radar seeker missiles are used as anti-radiation missiles.
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| 6. | In a passive radar system, there is no dedicated transmitter.
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| 7. | Brownstone believes China, Japan and Russia already have passive radar in various stages of development.
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| 8. | The radar system, nicknamed Kolchuga after the Russian word for chain-mail armor, is a so-called passive radar system.
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| 9. | Still, the passive radar technology is basically sound, said Nick Cook, an aerospace consultant for Jane's Defence Weekly.
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| 10. | The passive radar system has drawbacks.
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