"Roselectronika" has created a "invisible" complex for the protection of critical objects

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The Ruselectronics holding (part of Rostec State Corporation) has created a passive coherent radar system (PKL) designed for covert detection of moving air, ground and surface targets in the security zone of critical objects, according to Online holding

The new complex can be used as a security system for the perimeters of objects, air traffic services, and a traffic control system for ships. It provides a circular view, allows you to detect targets, determine their coordinates in a radius of up to 100 km, carry out trajectory tracking of targets and display information on the operator’s monitor, and take action in case of unauthorized intrusion. Due to the use of the existing signal of digital television and FM broadcasting, PCL does not require its own transmitter.

"Roselectronika" has created a "invisible" complex for the protection of critical objects


The principle of operation of the complex is based on the re-reflection of TV and FM signals from radio transmitting centers by moving objects. This feature allows the complex to be used where it is difficult to use classical radar systems. In particular, it provides the ability to detect small targets, including drones, at extremely low altitudes in populated areas.

As part of the united "Electronics", the development of the system is engaged in "Research Institute" Vector ". At the moment, an experimental station has been developed, which has proved its effectiveness. It has 15 antennas, one of which is directed to the radiation source, while the others perceive the reflected signal from airplanes, ships, cars and even people. For example, the detection range of the UAV - 10 km, cars and people at a distance of less than 20 km, ships - 80 km.

The complex includes an antenna system, a device for receiving and processing signals, a complex of computational tools with special software. In addition, it can be equipped with video control and other additional equipment to protect the object. The complex has no harmful effects on people and the environment, has low power consumption and low operating cost. Small dimensions allow you to release a mobile version of the complex.

The location complex can be used to protect critical facilities, including chemical plants, defense enterprises, power plants, airports, mines, as well as be used to ensure the safety of water areas and territories of great length.
23 comments
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  1. +4
    9 June 2017 12: 19
    In the photo, I somehow vaguely believe ..! But still...
    Such Ministry of Emergencies have long been standing, visually .. (they look like a bell)))))
    1. +6
      9 June 2017 12: 28
      Quote: DEPARTMENT
      look like a bell

      smile

      Paints a rocket soldier to the arrival of the general. He painted, painted ... Tired. And you need to paint. “Give,” he thinks, “I will throw a bucket on top of the rocket. The paint will drain and color everything! ” No sooner said than done. The rocket quickly turned into a radical green. And the bucket can’t take off - it’s painted!
      Here the general goes.
      “What is it, soldier?” What kind of disgrace do you have?
      “Well, comrade general, this is an ion reflector!”
      - Hmm ... So I see that an ion reflector. Why not painted?
  2. +8
    9 June 2017 12: 27
    If true (working in passive mode) - then a very funny thing.
    1. +3
      9 June 2017 15: 01
      The idea is not new, I’m glad that at last they pretended to production. Stations that use passive mode to detect targets (there are many ways) were developed in the Union, probably from the 70s. Theoretical justification was given even earlier.
  3. 0
    9 June 2017 12: 27
    A great thing for detecting UAVs in a cellular area.
    1. +1
      9 June 2017 12: 36
      Quote: Operator
      A great thing for detecting UAVs in a cellular area.

      Something is tormented by vague doubts .... maybe all the same a laser?
      With modern materials, a small drone .... if it will take off the waves then this is the level of statistical error ....
      1. +1
        9 June 2017 12: 57
        Quote: himRa
        Something is tormented by vague doubts .... maybe all the same a laser?

        The world around us is full of electromagnetic disturbances, but here what the sensors and the base for the signal filter should be, well, here the answer is not yet clear
        1. +5
          9 June 2017 13: 51
          Quote: APASUS
          The world around us is full of electromagnetic disturbances, but here what the sensors and the base for the signal filter should be, well, here the answer is not yet clear

          An article brings some clarification on this issue, here is an excerpt from it:
          “A useful signal for the locator is the signal reflected from the target. This signal contains useful information: the acquired delay associated with the additional propagation of the FM station radiation to the target and further to the locator Δτ and the acquired Doppler frequency shift associated with the target motion Δθ This reflected signal s' (t + Δτ, f + Δθ) is received by a passive locator against the background of a powerful interference - the signal of the FM radio station s (t, f) itself. The value of this interference with respect to the useful signal can be + 100 dB or more .

          To distinguish the useful signal at the level of such a powerful noise, it is necessary to calculate the Ambiguity Function in the two-dimensional plane of the parameters (Δτ, Δθ). Obviously, for classical analogue radio receivers, the task of such computational complexity is practically impossible (more precisely, it is realized with unacceptable costs). And only with the advent of high-speed radar data processing tools, such as FPGA / FPGA and DSP, it is now possible to use Software Defined Radio (SDR) technology to directly transfer a radio signal to a digital domain and perform computational tasks already in the digital domain.

          However, here everything is not so simple. SDR technology works great at interference levels commensurate with signal strength. In our case, when the interference exceeds the useful signal by 100 dB or more, this means only one thing: for the analog-to-digital converters (ADCs) included in the SDR, a bit grid is required so that the maximum input signal range, scalable to the level of interference, provided for the useful signal at least a couple of least significant bits. At the same time, the ADC must provide the appropriate conversion speed at least at the level of 200 Msamples / s.

          In fact, the sampling rate should be even greater in order to take advantage of oversampling and win an additional dynamic range to eliminate the suppression of the useful signal already at the input of the ADC. And it is precisely these components that began to appear over the past 5 years. The use of unified ADC modules with standardized FMC connectors and the use of signal processors, also standardized for the VPX bus, dramatically reduced the implementation cost and the development time of PCL. This circumstance was a trigger, or a trigger for new players to rush into the previously considered elite radar equipment market ... "
          full article here: http://www.nazim.ru/673
      2. +1
        9 June 2017 13: 46
        And what kind of sensitivity of the receivers is needed to detect reflection from the transmitter of the hell that knows where ... Yes, even against the background of other signals. Well, if so - proud of our engineers!
      3. 0
        9 June 2017 16: 42
        Quote: himRa
        Something is tormented by vague doubts .... maybe all the same a laser?

        Multistatic radar.
        1. +1
          9 June 2017 16: 56
          Quote: Operator
          Multistatic radar.

          I read and ..... broke my brain!
          For those who may be interested, pay attention to the authors (last names):

          http://technomag.bmstu.ru/doc/826094.html
          1. 0
            9 June 2017 17: 07
            If on fingers:
            signals from cell towers are duplicated by wire to a computer center, passive receivers receive signals from the air and also transmit them by wire to a computer center, the CC compares signals with each other taking into account the territorial location of towers and receivers and calculates aerial targets from them, so to speak, radio shadow.

            Stealth will no longer work - multistatic radar does not work on reflected signals, but on absorbed ones.
            1. +1
              9 June 2017 17: 28
              Apparently it's just .....? laughing for you!
              But I can’t understand how a small drone that consists of 3/4 of plastic and radio-absorbing materials can be detected in this way in EW conditions !!! belay
              1. 0
                9 June 2017 18: 26
                You probably wanted to say "radiolucent" materials.

                It all depends on the power of the CC.
                1. +1
                  9 June 2017 18: 39
                  Quote: Operator
                  You probably wanted to say "radiolucent" materials.

                  Yes hi
                  I begin to argue: if an object is transparent to radio waves, can it distort the signal? For example, I still understand cellular communication and the reflected signal from buildings ....
                  But how can distortion be measured if it is not? or is the value so insignificant?
                  In general, rhetorical questions, because amateurish and do not require answers ... otherwise the spies ran in thanks for trying hi
                  1. 0
                    9 June 2017 18: 51
                    All structural materials, including plastics, have an absorption coefficient of radio waves other than the absorption coefficient of air. Plus batteries and electric motors of the UAV quadrocopter. All together is quite enough to detect its radio shadow - with the corresponding power of the CC.

                    As I understand it, multiprocessor servers with domestic Elbrus processors are used there.
            2. +1
              9 June 2017 17: 49
              That is, by doing this you want to acknowledge that it is possible to detect false targets in the cloud of passive interference for mbr. After all, computing power is approximately comparable.
      4. +1
        9 June 2017 17: 40
        What I don’t understand. Someone is trying to detect a target with EPR 0.001 sq. There are a million interference in the city. This task is still overwhelming. Computing power is not enough.
  4. 0
    9 June 2017 13: 05
    Interestingly, and what accuracy does the system provide for determining the coordinates of the target? Can it be used for target designation of the WTO? If YES, then a very useful device is obtained. For many military branches.
  5. 0
    9 June 2017 14: 36
    Well, the duck house will now be under reliable protection. Homeland saved!
  6. +1
    9 June 2017 18: 25
    Yes ... what the technique has come to - as they used to say "Three from Prostokvashino." Now the one who will prepare TU or TK for an invisibility cap will have to stipulate in which particular radiation ranges invisibility is required. And, I'm afraid that in all ranges it can not be provided with anything but a black hole.
  7. +1
    9 June 2017 19: 05
    Quote: Operator
    All structural materials, including plastics, have an absorption coefficient of radio waves other than the absorption coefficient of air. Plus batteries and electric motors of the UAV quadrocopter. All together is quite enough to detect its radio shadow - with the corresponding power of the CC.
    As I understand it, multiprocessor servers with domestic Elbrus processors are used there.

    Yes, even if it is on imported stones ..... this is already fantastic! At the expense of the performance of our systems, I have no doubt they are at the level!
    I admit that our fellows! The theoretical base is still Soviet, I read what is available, there are many, if you wish, you can upgrade your skills yourself.
  8. +1
    10 June 2017 18: 32
    From the article it is not clear how this device differs from the Chain Mail, which the "ancient Ukrainians" have been producing for several years?