초록

The presently disclosed subject matter includes a laser system, comprising with a phase conjugation laser receiver and transmitter (PCLRT) and at least one processing unit and configured to enable simultaneous designation of multiple platforms each to a respective target.

대표청구항 ▼

1. A system for laser designation, comprising: a laser illuminator;a phase conjugation laser receiver and transmitter (PCLRT), the PCLRT including a laser amplifier and a phase conjugation mirrors and at least one processing units;the at least one processing unit is configured to obtain information

1. A system for laser designation, comprising: a laser illuminator;a phase conjugation laser receiver and transmitter (PCLRT), the PCLRT including a laser amplifier and a phase conjugation mirrors and at least one processing units;the at least one processing unit is configured to obtain information in respect of one or more targets; and responsive to obtaining said information, to enable generation of a modified laser signal characterized by an average pulse repetition frequency (PRF) that is equal to a basic average PRF of a given original laser signal multiplied by at least N, said N > the number of said one or more targets; the modified laser signal including at least N pulse series; and to assign a respective pulse series to each of at least part of said one or more targets;wherein the laser illuminator is configured to transmit the modified signal towards said one or more targets;wherein the PCLRT is configured to receive a reflection of said modified signal, reflected from at least said one or more targets; said reflection including a reflection set for each given pulse in the modified laser signal; each said reflection set including at least a plurality of pulse reflections each reflected from a different target;wherein the PCLRT is further configured to perform gating for at least one reflection set, in order to allow, one pulse reflection from a plurality of pulse reflections of said at least one reflection set, reflected from a given target, to be amplified by the amplifier, reflected by the phase conjugation mirror and returned in a direction of the given target. 2. The system according to claim 1 wherein the modified laser signal includes a pulse set in each PRI (pulse rate interval) of the original laser signal, the pulse set including at least N pulses, and wherein each of said pulse series is associated with a different ith pulse in each said pulse set. 3. The system according to claim 2 wherein each pulse series is characterized by a different group of alternating PRI values which enables to uniquely identify each pulse series, and wherein all pulse series are characterized by a same average PRI value. 4. The system according to claim 1 wherein the gating is controlled by the at least one processing unit configured to synchronize between a time of transmission of a given pulse and a time of arrival of a respective reflection set, based on any one of: distance to the given target; ororder of arrival of the plurality of pulse reflections in each of said reflection set. 5. The system according to claim 1, further comprising a target detection unit configured to identify and provide the information in respect of the one or more targets. 6. The system according to claim 1 being operatively connected with a counter attack system, the system being operable to communicate with the counter attack system for allocating at least one target, from the one or more targets, to a respective intercepting platform, and provide information including a pulse series, from the at least N pulse series, assigned to the at least one target; and to launch said intercepting platform towards said at least one target. 7. The system according to claim 1 wherein said amplifier is configured to amplify said one pulse reflection, once upon entrance to the PCLRT and once upon exit of the PCLRT. 8. The system according to claim 1 wherein the illuminator is configured to transmit the modified signal as a wide beam for illuminating all targets in an uncertainty area and with sufficient energy to be reflected and received by the PCLRT. 9. The system according to claim 1, further comprising beam shaping optics enabling to generate a laser beam characterize by a beam profile, that ensures an approximately minimum constant received signal reflected from an illuminated target. 10. The system according to claim 1 wherein the one pulse reflection, amplified and returned in the direction of the given target, is characterized by sufficient energy for enabling an intercepting platform to track and home on the given target. 11. A laser designation method, comprising: obtaining information in respect of one or more targets;generating a modified laser signal characterized by an average pulse repetition frequency (PRF) that is equal to a basic average PRF of a given original laser signal multiplied by at least N, said N ≧ the number of said one or more targets; the modified laser signal including at least N pulse series;assigning a respective pulse series to each of at least part of said one or more targets;transmitting the modified signal towards said one or more targets;receiving a reflection of said modified signal, reflected from at least said one or more targets; said reflection including a reflection set for each given pulse in the modified laser signal; each said reflection set including at least a plurality of pulse reflections, each reflected from a different target; andfor at least one reflection set: allowing one pulse reflection, reflected from a given target, to be reflected by a phase conjugation mirror;amplifying the one pulse reflection; andreturning an amplified signal, reflected from the phase conjugation mirror, directed towards the given target; the amplified signal comprising sufficient energy for an intercepting platform to track the given target. 12. The laser designation method according to claim 11 wherein the modified laser signal comprises a pulse set in each PRI (pulse rate interval) of the original laser signal, the pulse set including at least N pulses, and wherein each of said pulse series is associated with a different ith pulse in each said pulse set. 13. The laser designation method according to claim 12 wherein each pulse series is characterized by a different group of alternating PRI values which enables to uniquely identify each of said pulse series, and wherein all pulse series are characterized by a same average PRI value. 14. The laser designation method according to claim 11, further comprising controlling a switch in order to allow the one pulse reflection, reflected by the given target, to be reflected by the phase conjugation mirror; wherein the controlling is based on any one of: synchronization between a time of transmission of a given pulse and a time of arrival of a respective reflection set, based on a distance of the given target; ororder of arrival of the pulse reflections in each of said reflection set. 15. The laser designation method according to claim 11 wherein the at least one reflection set is a reflection set of a pulse associated with a pulse series assigned to the given target. 16. The laser designation method according to claim 11, further comprising identifying said one or more targets. 17. The laser designation method according to claim 11, further comprising: allocating at least one target, from the one or more targets, to a respective intercepting platform;assigning to the intercepting platform a pulse series assigned to the at least one target; andlaunching said intercepting platform towards said at least one target. 18. The laser designation method according to claim 11 wherein the transmitting of the modified signal includes transmitting a wide laser beam characterized by sufficient energy for tracking of targets in an uncertainty area where the targets are expected to be. 19. The laser designation method according to claim 11, further comprising generating the modified signal as a laser beam characterized by a beam profile that ensures approximately constant minimum received signal reflected from a target illuminated by the modified signal. 20. A non-transitory computer-readable memory tangibly embodying a program of instructions executable by a computer for executing a method of laser designation, the method comprising: obtaining information in respect of one or more targets;generating a modified laser signal characterized by an average pulse repetition frequency (PRF) that is equal to a basic average PRF of a given original laser signal multiplied by at least N, said N ≧ the number of said one or more targets; the modified laser signal including at least N pulse series;assigning a respective pulse series to each of at least part of said one or more targets;transmitting the modified signal towards said one or more targets;receiving a reflection of said modified signal, reflected from at least said one or more targets; said reflection comprising a reflection set for each given pulse in the modified laser signal; each said reflection set including at least a plurality of pulse reflections each reflected from a different target; andfor at least one reflection set: allowing one pulse reflection, reflected from a given target, to be reflected by a phase conjugation mirror;amplifying the one pulse reflection; andreturning an amplified signal, reflected from the phase conjugation mirror, directed towards the given target.