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An apparatus comprising a vibration generation system, a vibration measurement system, and an optical system associated with the vibration measurement system, and a controller. The vibration generation system is configured to generate acoustic energy that causes vibrations to occur in the ground. Th

An apparatus comprising a vibration generation system, a vibration measurement system, and an optical system associated with the vibration measurement system, and a controller. The vibration generation system is configured to generate acoustic energy that causes vibrations to occur in the ground. The vibration measurement system is configured to transmit laser beams to the surface of the ground in which the vibrations occur, receive responses to the laser beams, and generate vibration data from the responses. The optical system is configured to direct the laser beams to the surface of the ground such that the laser beams have a selected spatial arrangement relative to the surface. The controller is configured to determine whether an object is present under the surface of the ground using the vibration data.

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1. An apparatus comprising: a vibration generation system configured to generate acoustic energy that causes vibrations to occur in a ground;a vibration measurement system configured to transmit a number of laser beams to a surface of the ground in which the vibrations occur; receive a number of res

1. An apparatus comprising: a vibration generation system configured to generate acoustic energy that causes vibrations to occur in a ground;a vibration measurement system configured to transmit a number of laser beams to a surface of the ground in which the vibrations occur; receive a number of responses to the number of laser beams; and generate vibration data from the number of responses;an optical system associated with the vibration measurement system and configured to direct the number of laser beams to the surface of the ground such that the number of laser beams has a selected spatial arrangement relative to the surface;a controller configured to determine whether an object is present under the surface of the ground using the vibration data;a vehicle, wherein the vibration measurement system, the vibration generation system, and the controller are associated with the vehicle; anda location system configured to identify movement of the vehicle, wherein the controller is configured to control movement of the number of laser beams to a number of locations on the surface of the ground while the vehicle is moving such that the number of laser beams remain at the number of locations for a period of time sufficient to obtain a sufficient response to generate the vibration data that can be used for determining whether the object is present under the surface of the ground at the number of locations. 2. The apparatus of claim 1 further comprising: a vibration isolation system associated with the vehicle, wherein the vibration isolation system is configured to reduce an effect of undesired vibrations on measurements made by the vibration measurement system. 3. The apparatus of claim 2, wherein the vibration isolation system is selected from at least one of the group consisting of an active vibration isolation system and a passive vibration isolation system. 4. The apparatus of claim 1, wherein the vibration measurement system comprises: a laser beam generation system configured to generate the number of laser beams and a number of reference beams, wherein a portion of each laser beam in the number of laser beams forms a reference beam in the number of reference beams; anda detection system configured to detect a number of differences between the number of reference beams and the number of responses and generate the vibration data from the number of differences between the number of reference beams and the number of responses. 5. The apparatus of claim 1, wherein the optical system is part of the vibration measurement system and comprises: a number of mirrors configured to direct the number of laser beams to a location on the surface of the ground such that the number of laser beams has the selected spatial arrangement at the location on the surface; change the selected spatial arrangement of the number of laser beams such that the vibration data has a desired resolution; and direct the number of responses and the reference beam along an axis to the detection system. 6. The apparatus of claim 5 further comprising: an inertial measurement unit associated with the optical system, wherein the inertial measurement unit generates information about movement of the optical system and wherein the controller is configured to generate adjustments to maintain the number of laser beams at a desired location on the surface of the ground in response to the movement of the optical system. 7. The apparatus of claim 1, wherein the acoustic energy takes the form of sound waves, and wherein the sound waves cause the vibrations to occur in the ground. 8. The apparatus of claim 1 further comprising: a database of vibration signatures for objects. 9. The apparatus of claim 1, wherein the controller comprises at least one selected from the group consisting of a processor unit, a computer system, and a hardware unit. 10. The apparatus of claim 1, wherein the controller is configured to control movement of the number of laser beams to a number of locations on the surface of the ground. 11. The apparatus of claim 1 further comprising: a camera system configured to generate images of the surface of the ground; anda display device, wherein the controller is configured to display the images of the surface of the ground on the display device and display an identification of a location of the object under the ground in a location on the image corresponding to the location of the object. 12. A method for detecting objects, the method comprising: moving a vehicle along a surface of a ground, wherein the vehicle has an object detection system comprising a vibration generation system configured to generate acoustic energy that causes vibrations to occur in the ground; a vibration measurement system configured to transmit a number of laser beams to the surface of the ground in which the vibrations occur, receive a number of responses to the number of laser beams, and generate vibration data from the number of responses; an optical system associated with the vibration measurement system and configured to direct the number of laser beams to the surface of the ground such that the number of laser beams has a selected spatial arrangement relative to the surface; and a controller configured to determine whether an object is present under the surface of the ground using the vibration data;generating information about movement of the optical system using an inertial measurement unit associated with the optical system;generating adjustments to maintain the number of laser beams at a desired location on the surface of the ground in response to the movement of the optical system; anddetermining whether the object is present under the ground using the object detection system. 13. The method of claim 12, wherein the step of determining whether the object is present under the ground using the object detection system comprises: determining whether the object is present under the ground using the object detection system while the vehicle is moving. 14. The method of claim 12 further comprising: generating acoustic energy that causes vibrations to occur in the ground;directing the number of laser beams to the surface of the ground using the optical system;detecting the number of responses to the number of laser beams;generating the vibration data from the number of responses; anddetermining whether the object is present using the vibration data. 15. The method of claim 14 further comprising: generating the number of laser beams and a reference beams using a laser beam generation system. 16. The method of claim 15, wherein the step of generating the vibration data from the number of responses comprises: detecting a number of differences between the number of reference beams and the number of responses; andgenerating the vibration data from the number of differences between the number of reference beams and the number of responses. 17. The method of claim 14, wherein the step of directing the number of laser beams to the surface of the ground comprises: directing the number of laser beams to a location on the surface of the ground using a number of mirrors for the optical system such that the number of laser beams has the selected spatial arrangement at the location on the surface; andwherein the step of detecting the number of responses to the number of laser beams comprises:directing the number of responses and the number of reference beams along an axis to a detection system using the number of mirrors. 18. The method of claim 14, wherein the step of directing the number of laser beams to the surface of the ground comprises: changing the selected spatial arrangement for the number of laser beams such that the vibration data generated from the number of responses to the number of laser beams having the selected spatial arrangement has a desired resolution. 19. An apparatus comprising: a vibration generation system configured to generate acoustic energy that causes vibrations to occur in a ground;a vibration measurement system configured to transmit a number of laser beams to a surface of the ground in which the vibrations occur; receive a number of responses to the number of laser beams; and generate vibration data from the number of responses;an optical system associated with the vibration measurement system and configured to direct the number of laser beams to the surface of the ground such that the number of laser beams has a selected spatial arrangement relative to the surface;a controller configured to determine whether an object is present under the surface of the ground using the vibration data;wherein the optical system is part of the vibration measurement system and comprises:a number of mirrors configured to direct the number of laser beams to a location on the surface of the ground such that the number of laser beams has the selected spatial arrangement at the location on the surface; change the selected spatial arrangement of the number of laser beams such that the vibration data has a desired resolution; and direct the number of responses and the reference beam along an axis to the detection system; andan inertial measurement unit associated with the optical system, wherein the inertial measurement unit generates information about movement of the optical system and wherein the controller is configured to generate adjustments to maintain the number of laser beams at a desired location on the surface of the ground in response to the movement of the optical system. 20. The apparatus of claim 19 further comprising: a vehicle, wherein the vibration measurement system, the vibration generation system, and the controller are associated with the vehicle. 21. The apparatus of claim 20 further comprising: a vibration isolation system associated with the vehicle, wherein the vibration isolation system is configured to reduce an effect of undesired vibrations on measurements made by the vibration measurement system. 22. The apparatus of claim 19, wherein the vibration measurement system comprises: a laser beam generation system configured to generate the number of laser beams and a number of reference beams, wherein a portion of each laser beam in the number of laser beams forms a reference beam in the number of reference beams; anda detection system configured to detect a number of differences between the number of reference beams and the number of responses and generate the vibration data from the number of differences between the number of reference beams and the number of responses. 23. The apparatus of claim 19 further comprising: a camera system configured to generate images of the surface of the ground; anda display device, wherein the controller is configured to display the images of the surface of the ground on the display device and display an identification of a location of the object under the ground in a location on the image corresponding to the location of the object.