Using dynamic interferometric synthetic aperature radar (InSAR) to image fast-moving surface waves
First Claim
Patent Images
1. A Dynamic InSAR imaging method, comprising:
- sampling one or more fast-moving surface displacement waves from a plurality of moving platform positions utilizing a plurality of pulses from an electromagnetic radiation source and at least one antenna; and
reconstructing a plurality of phase differentials from said plurality of platform positions to produce a series of interferometric images of said waves.
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Abstract
A new differential technique and system for imaging dynamic (fast moving) surface waves using Dynamic Interferometric Synthetic Aperture Radar (InSAR) is introduced. This differential technique and system can sample the fast-moving surface displacement waves from a plurality of moving platform positions in either a repeat-pass single-antenna or a single-pass mode having a single-antenna dual-phase receiver or having dual physically separate antennas, and reconstruct a plurality of phase differentials from a plurality of platform positions to produce a series of desired interferometric images of the fast moving waves.
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Citations
43 Claims
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1. A Dynamic InSAR imaging method, comprising:
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sampling one or more fast-moving surface displacement waves from a plurality of moving platform positions utilizing a plurality of pulses from an electromagnetic radiation source and at least one antenna; and
reconstructing a plurality of phase differentials from said plurality of platform positions to produce a series of interferometric images of said waves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A Dynamic InSAR imaging method, comprising:
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sampling one or more fast-moving surface displacement waves from a plurality of moving platform positions utilizing a plurality of pulses from an electromagnetic radiation source and at least one antenna, producing an offset phase center having a time lag tlag, subtracting a phase difference having said time lag tlag to produce a phase differential at each of said platform positions; and
reconstructing a plurality of said phase differentials to produce a series of interferometric images of said fast-moving surface displacement waves. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A Dynamic InSAR imaging method, comprising:
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sampling one or more fast-moving surface displacement waves from a plurality of moving platform positions utilizing a plurality of pulses from an electromagnetic radiation source and at least one antenna, producing an offset phase center having a time lag tlag, subtracting a phase difference having said time lag tlag to produce a phase differential at each of said platform positions, reconstructing a plurality of said phase differentials to produce a series of interferometric images having one or more sets of concentric rings associated with said fast-moving surface displacement waves. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A dual-phase-center InSAR apparatus, comprising:
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a receive array capable of collecting a reflected radiation from an electromagnetic source, a first channel receiver adapted to measure said reflected radiation collected from said array and;
a second channel receiver additionally adapted to measure said reflected radiation collected from said array, said first and said second channel receivers being further adapted to produce a predetermined phase center offset (B), with B being a predetermined baseline distance between an aft and a forward phase center, wherein a phase difference between said aft and said forward phase center enables the determination of a wave velocity of one or more fast-moving surface displacement waves. - View Dependent Claims (42, 43)
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Specification