Emitter array for a lunar rover

Patent metadata

Field	Value
Publication number	US-12460365-B2
Application number	US-202318100679-A
Country	US
Kind code	B2
Filing date	Jan 24, 2023
Priority date	Jan 24, 2023
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

A lunar rover includes a lunar rover body, at least one wheel coupled with the lunar rover body, a drive module coupled with the at least one wheel, the drive module configured to drive rotation of the at least one wheel over a surface, an extension arm coupled to the lunar rover body, an emitter array coupled to the extension arm, and a controller electrically connected with the emitter array. The controller is configured to control the emitter array to emit at least one of laser electromagnetic waves or maser electromagnetic waves towards the surface to sinter lunar regolith particles on the surface.

First claim

What is claimed is:

1 . A lunar rover comprising:
a lunar rover body; at least one wheel coupled with the lunar rover body; a drive module coupled with the at least one wheel, the drive module configured to drive rotation of the at least one wheel over a surface; an extension arm coupled to the lunar rover body; an emitter array coupled to the extension arm; a lidar sensor coupled with the extension arm, the lidar sensor configured to emit light signals and measure reflected light that returns to the lidar sensor; and a controller electrically connected with the emitter array, the controller configured to,
control the emitter array to emit at least one of laser electromagnetic waves or maser electromagnetic waves towards the surface to sinter lunar regolith particles on the surface,
determine a distance from the emitter array to the surface according to reflected light that returns to the lidar sensor; and
adjust a power level of the emitter array according to the distance from the emitter array to the surface.

2 . The lunar rover of claim 1 , wherein the emitter array includes multiple laser emitters configured to emit coherent light.

3 . The lunar rover of claim 2 , wherein the multiple laser emitters are configured to emit light with at a power in a range of 15 KW to 50 KW.

4 . The lunar rover of claim 1 , wherein the emitter array includes multiple maser emitters configured to emit electromagnetic waves have at least one of a microwave frequency, a radio frequency or an infrared frequency.

5 . The lunar rover of claim 4 , wherein the multiple maser emitters are configured to emit electromagnetic waves at a frequency of 2.45 GHz.

6 . The lunar rover of claim 1 , further comprising a signal detector configured to receive signals from multiple orientation antennas located in different directions with respect to the lunar rover body,
wherein the controller is configured to:
determine a current position of the lunar rover body by triangulating signals received from the multiple orientation antennas;
obtain a stored path specification identifying a previously sintered path on the surface; and
control movement of the drive module and the at least one wheel to move the lunar rover body along the sintered path, according to the current position of the lunar rover body.

7 . The lunar rover of claim 1 , further comprising a servo motor coupled with at least one of the emitter array or the extension arm,
wherein the controller is configured to:
inhibit movement of the at least one wheel to maintain the lunar rover body in a stationary position; and
operate the servo motor to rotate an angle of the emitter array with respect to the surface, to sweep the at least one of the laser electromagnetic waves or the maser electromagnetic waves along the surface while the lunar rover body remains in the stationary position.

8 . The lunar rover of claim 1 , wherein the controller is configured to:
control operation of the drive module to drive rotation of the at least one wheel to move the lunar rover body across the surface; and activate the emitter array to sinter lunar regolith particles along a path on the surface as the at least one wheel moves the lunar rover body across the surface.

9 . The lunar rover of claim 1 , wherein the extension arm is a first extension arm coupled to a front portion of the lunar rover body, and the emitter array is a first emitter array, the lunar rover further comprising:
a second extension arm coupled to a rear portion of the lunar rover body; and a second emitter array coupled to the second extension arm, wherein the controller is configured to control the second emitter array to emit at least one of laser electromagnetic waves or maser electromagnetic waves towards the surface to sinter lunar regolith particles on the surface.

10 . A lunar rover of claim 1 , further comprising:
a lunar rover body: at least one wheel coupled with the lunar rover body; a drive module coupled with the at least one wheel, the drive module configured to drive rotation of the at least one wheel over a surface; an extension arm coupled to the lunar rover body; an emitter array coupled to the extension arm; a detector element configured to detect an amount of lunar regolith particles on the surface; and a controller electrically connected with the emitter array, wherein the controller is configured to:
control the emitter array to emit at least one of laser electromagnetic waves or maser electromagnetic waves towards the surface to sinter lunar regolith particles on the surface;
determine whether the amount of lunar regolith particles detected by the detection element is greater than a sinter threshold value;
activate the emitter array to sinter the lunar regolith particles in response to the amount of lunar regolith particles being greater than the sinter threshold value; and
deactivate the emitter array to avoid sintering the lunar regolith particles in response to the amount of lunar regolith particles being less than the sinter threshold value.

11 . The lunar rover of claim 10 , wherein:
the detector element includes a polarity detector configured to detect a polarity of the lunar regolith particles; and the controller is configured to determine the amount of lunar regolith particles according to the polarity of the lunar regolith particles detected by the polarity detector.

12 . The lunar rover of claim 10 , wherein:
the detector element includes a lidar detector configured to emit light signals and determine an amount of reflected light that returns to the lidar detector; and the controller is configured to determine the amount of lunar regolith particles according to the amount of reflected light that returns to the lidar detector.

13 . A lunar rover emitter array apparatus comprising:
an emitter array configured to couple with an extension arm of a lunar rover body; a detector element configured to detect an amount of lunar regolith particles on a surface over which the lunar rover body travels; and a controller electrically connected with the emitter array and the detection element, wherein the controller is configured to:
determine whether the amount of lunar regolith particles detected by the detection element is greater than a sinter threshold value;
in response to the amount of lunar regolith particles being greater than the sinter threshold value, activate the emitter array to emit at least one of laser electromagnetic waves or maser electromagnetic waves towards the surface to sinter lunar regolith particles on the surface; and
in response to the amount of lunar regolith particles being less than the sinter threshold value, deactivate the emitter array to avoid sintering the lunar regolith particles.

14 . The lunar rover emitter array apparatus of claim 13 , wherein:
the detector element includes a polarity detector configured to detect a polarity of the lunar regolith particles; and the controller is configured to determine the amount of lunar regolith particles according to the polarity of the lunar regolith particles detected by the polarity detector.

15 . The lunar rover emitter array apparatus of claim 13 , wherein:
the detector element includes a lidar detector configured to emit light signals and determine an amount of reflected light that returns to the lidar detector; and the controller is configured to determine the amount of lunar regolith particles according to the amount of reflected light that returns to the lidar detector.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Guru Satendra S
• Cuellar-Ferreira Felipe
• Makkinejad Babak
• Ruiz Maria Rossana
• Spry Douglas James

Classifications

• G01S17/08

  for measuring distance only (indirect measurement G01S17/46; active triangulation systems G01S17/48) · CPC title

• B23K26/324

  involving non-metallic parts · CPC title

• G01N21/21

  Polarisation-affecting properties (G01N21/19 takes precedence) · CPC title

• B23K26/0608 Primary

  in the same heat affected zone [HAZ] (B23K26/0613, B23K26/0619 take precedence) · CPC title

• G01S7/4802

  using analysis of echo signal for target characterisation; Target signature; Target cross-section · CPC title