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US 8,947,644 B2Granted
Using multiple waveforms from a coherent LADAR for target acquisition
AssigneeRaytheon Company
InventorMaurice J. Halmos
Life of this patent
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Abstract
In one aspect, a method includes transmitting a tone waveform from a laser detection and ranging (LADAR) sensor, detecting a target using an echo of the tone waveform reflected from the target, determining a radial velocity of the target using the echo of the monotone waveform from the target, transmitting, from the LADAR sensor, linear frequency modulation (FM) chirp signals and determining a range to target using echoes from the linear FM chirp signals.
Claims6
A method, comprising:
- transmitting a tone waveform from a laser detection and ranging (LADAR) sensor;
- detecting a target using an echo of the tone waveform reflected from the target;
- determining a radial velocity of the target using the echo of the tone waveform from the target;
- after detecting the object and determining the radial velocity, transmitting, from the LADAR sensor, linear frequency modulation (FM) chirp signals one at a time towards the target, the linear FM chirp signals differ from one another by one of chirp slope or chirp time;
- and
- determining a range to the target using echoes from the linear FM chirp signals.
3 more elements
Dependencies are inferred from the claim text.