A method is described for optical communication of data between a first telecommunication device at a known location and a second telecommunication device, the first device including an optical fiber carrying a light beam and a removable mirror controlled by a microprocessor in order to direct the light beam at the output of the optical fiber in a first direction. The method includes controlling the removable mirror by the microprocessor in order to align the first direction with the direction of reception, and determining by the microprocessor the location of the second device, knowing the location of the first device, the relative height between the two devices and the vertical and horizontal inclination angles of the mirror.

A system for providing integrated detection and countermeasures against unmanned aerial vehicles include a detecting element, a location determining element and an interdiction element. The detecting element detects an unmanned aerial vehicle in flight in the region of, or approaching, a property, place, event or very important person. The location determining element determines the exact location of the unmanned aerial vehicle. The interdiction element can either direct the unmanned aerial vehicle away from the property, place, event or very important person in a non-destructive manner, or can cause disable the unmanned aerial vehicle in a destructive manner.

A system for providing integrated detection and countermeasures against unmanned aerial vehicles include a detecting element, a location determining element and an interdiction element. The detecting element detects an unmanned aerial vehicle in flight in the region of, or approaching, a property, place, event or very important person. The location determining element determines the exact location of the unmanned aerial vehicle. The interdiction element can either direct the unmanned aerial vehicle away from the property, place, event or very important person in a non-destructive manner, or can cause disable the unmanned aerial vehicle in a destructive manner.

A solar tracker system including a tracker apparatus including a plurality of solar modules, each of the solar modules being spatially configured to face in a normal manner in an on sun position in an incident direction of electromagnetic radiation derived from the sun, wherein the solar modules include a plurality of PV strings, and a tracker controller. The tracker controller includes a processor, a memory, a power supply configured to provide power to the tracker controller, a plurality of power inputs configured to receive a plurality of currents from the plurality of PV strings, a current sensing unit configured to individually monitor the plurality of currents, a DC-DC power converter configured to receive the plurality of power inputs powered from the plurality of PV strings to supply power to the power supply, and a motor controller, wherein the tracker controller is configured to track the sun position.

A solar tracker system including a tracker apparatus including a plurality of solar modules, each of the solar modules being spatially configured to face in a normal manner in an on sun position in an incident direction of electromagnetic radiation derived from the sun, wherein the solar modules include a plurality of PV strings, and a tracker controller. The tracker controller includes a processor, a memory, a power supply configured to provide power to the tracker controller, a plurality of power inputs configured to receive a plurality of currents from the plurality of PV strings, a current sensing unit configured to individually monitor the plurality of currents, a DC-DC power converter configured to receive the plurality of power inputs powered from the plurality of PV strings to supply power to the power supply, and a motor controller, wherein the tracker controller is configured to track the sun position.

In some implementations, a passive laser detector includes a plurality of wide frequency range detectors which detect illumination by a high-intensity electromagnetic radiation source. A detector processor is interoperably coupled to the plurality of wide frequency range detectors, where the detector processor continuously monitors a background signal of ambient electromagnetic radiation illumination, where the detector processor implements a defined hardware/software interface used to decode, as decoded commands, one or more commands encoded in a modulation of the high-intensity electromagnetic radiation source. A computer processes and initiates the decoded commands. A status of initiation of the decoded commands by an interface to a geospatial/collaborative communication software system is reported by the computer.

In some implementations, a passive laser detector includes a plurality of wide frequency range detectors which detect illumination by a high-intensity electromagnetic radiation source. A detector processor is interoperably coupled to the plurality of wide frequency range detectors, where the detector processor continuously monitors a background signal of ambient electromagnetic radiation illumination, where the detector processor implements a defined hardware/software interface used to decode, as decoded commands, one or more commands encoded in a modulation of the high-intensity electromagnetic radiation source. A computer processes and initiates the decoded commands. A status of initiation of the decoded commands by an interface to a geospatial/collaborative communication software system is reported by the computer.

A optical communication system including a source device and an endpoint device. The source device include an array of laser diodes and is configured to drive the laser diodes to project a sequence of patterns into the field of view of the source device to define a set of serially-projected codes, each of which isolated to one respective angular division of the field of view of the source device. The endpoint device receives a serially-projected code from the source device which varies based which angular division of the field of view of the source device is occupied by the endpoint device.

A optical communication system including a source device and an endpoint device. The source device include an array of laser diodes and is configured to drive the laser diodes to project a sequence of patterns into the field of view of the source device to define a set of serially-projected codes, each of which isolated to one respective angular division of the field of view of the source device. The endpoint device receives a serially-projected code from the source device which varies based which angular division of the field of view of the source device is occupied by the endpoint device.

The present disclosure relates to a device and method for accurately measuring an azimuth angle and an elevation angle of mid-infrared laser light. The device includes a laser, an atomic gas cell, a filter, a displacement platform, and a beam mass spectrometer. Pump light generated by the laser enters the atomic gas cell along an optical axis which is a Z-axis for a spontaneous frequency conversion process, and a generated reference beam enters the beam mass spectrometer through the filter; target mid-infrared laser light and the pump light intersect in the atomic gas cell to induce a second frequency conversion process, and a generated beam to be measured enters the beam mass spectrometer through the filter; and the beam mass spectrometer is arranged on the displacement platform and simultaneously detect spot images of the reference beam and the beam to be measured at different positions, respectively.