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US 2013/0278455 A1Published application
Efficient pulse doppler radar with no blind ranges, range ambiguities, blind speeds, or doppler ambiguities
AssigneeMassachusetts Institute of Technology
InventorWilliam S. Song
Life of this patent
Estimating the term…
Abstract
A Doppler radar system that avoids blind ranges, range ambiguities, blind speed and/or Doppler ambiguities. Pulse width, repetition interval and pulse type are varied from pulse to pulse within a coherent processing interval.
Claims24
A method of determining range information for a target comprising:
- generating a pulse signal comprising a train of transmit pulses, the transmit pulses having a pulse width, pulse waveform, and pulse repetition interval (PRI), at least two of which are each different for at least two consecutive pulses within the train of transmit pulses for a given Coherent Processing Interval (CPI), with the CPI defined by a set of transmit pulses in the train having a deterministic phase relationship of a reference frequency used to generate consecutive pulses;
- transmitting the pulse signal;
- receiving a return signal in response to transmitting;
- and
- range processing the return signal to determine range information for the target.
2 more elements
An apparatus comprising:
- a pulse train signal generator, for generating a pulse signal comprising a train of transmit pulses, the transmit pulses having at least two of a pulse width, pulse waveform, and pulse repetition interval (PRI) that are each different for at least two consecutive pulses within the train of transmit pulses for a given Coherent Processing Interval (CPI), with the CPI defined by a set of transmit pulses in the train having a deterministic phase relationship of a reference frequency used to generate consecutive pulses;
- a transmitter for transmitting the pulse signal;
- a receiver for receiving a return signal;
- and
- a range processor, for processing the return signal to determine range information for the target.
2 more elements
Dependencies are inferred from the claim text.