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In the development of high-resolution radar systems and other radar applications where high resolution is desired, the use of short pulse duration transmitting modes has achieved popularity because of the reduction of minimum range coverage and high-target resolution.
Building on this history, Navy scientists have developed a system of radar pulse generation in which pulses of extremely short duration are generated with coherence over wide frequency ranges. These enhanced benefits of the system are obtained by using a signal injection of a coherent microwave signal together with a pedestal pulse generator. The magnitude and duration of a pedestal is chosen such that the resonant-cavity-oscillator or magnetron is held in the Hartree voltage region in which internal electrical oscillations occur but are of such magnitude that the output is negligible. In this fashion, the injected signal causes the magnetron to function in a coherent mode such that the short duration drive pulse causes full output.
- Generation of short-duration, coherent burst of microwave energy
- Enables magnetrons to operate with much shorter pulses and allows greater latitude in radar circuitry
- US patent 6,914,556 available for express licensing