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Method and system for scanning ladar transmission with pulse modulation

  • US 9,885,778 B2
  • Filed: 08/14/2015
  • Issued: 02/06/2018
  • Est. Priority Date: 08/15/2014
  • Status: Active Grant
First Claim
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1. A method comprising:

  • controlling a scan pattern for a scanning ladar transmission system to target a plurality of range points according to the scan pattern, wherein the controlling step comprises (1) scanning a first mirror of the scanning ladar transmission system to a plurality of first mirror scan positions to target the scanning ladar transmission system along a first axis based on a first control signal, and (2) scanning a second mirror of the scanning ladar transmission system to a plurality of second mirror scan positions to target the scanning ladar transmission system along a second axis based on a second control signal, wherein the first and second axes are orthogonal to each other, and wherein the combination of the first and second mirror scan positions define where the scanning ladar transmission system is targeted; and

    transmitting, by the controlled scanning ladar transmission system, a plurality of modulated ladar pulses toward the range points in accordance with the scan pattern, wherein the transmitting step comprises (1) firing a light source of the scanning ladar transmission system to transmit a modulated ladar pulse toward the scanning first mirror, whereupon the modulated ladar pulse is reflected toward the scanning second mirror, whereupon the modulated ladar pulse is reflected toward a targeted range point, and (2) repeating the firing step for a plurality of the targeted range points as the first and second mirrors continue to scan.

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