RU88815U1 - PORTABLE RADAR STATION "ROSA" - Google Patents

Abstract

1. A portable radar station for tracking ground and / or surface objects, comprising an antenna post, including a solid-state transistor transceiver module, and a rotary support device associated with the antenna post, configured to be mounted on a tripod, while the antenna post is connected by a cable network to power supply unit and operator’s workplace, which is a geographic information system interfaced with the satellite navigation system integrated into the station. ! 2. The station according to claim 1, characterized in that the rotary support device is made single-axis with the ability to tilt in the elevation plane by means of an eccentric latch on which the antenna post is fixed. ! 3. The station according to claim 1, characterized in that the rotary support device is made two-coordinate with the possibility of rotation in two planes: azimuthal and elevation by automatic control of the drive. ! 4. Station according to any one of paragraphs.2, 3, characterized in that it provides rotation of the movable part of the slewing ring in azimuth up to 350 degrees (± 175), in elevation - in the range of ± 20 degrees with a speed of up to 60 degrees give me a sec. ! 5. The station according to claim 1, characterized in that the tripod is made in the form of a telescopic tripod with a support platform located in its upper part for installing a support-rotary device. ! 6. The station according to claim 5, characterized in that the compass and level are fixed in the upper part of the tripod under the support platform. ! 7. The station according to claim 5, characterized in that each leg of the tripod is equipped with fixing nuts and removable tips in the form of an elastic cap and spike. ! 8. Article

Description

The utility model relates to means of detecting, recognizing and tracking various types of objects (people, equipment, etc.) using reflected radio waves, namely to a solid-state digital coherent radar station (RLS) for tracking moving and stationary targets, including in the absence of optical visibility and difficult hydrometeorological conditions, such as: fog, precipitation, etc. The radar can be used to monitor the ground (surface) situation at a distance of up to 15 km., For example, on land (water) sections of the state border.

The proposed radar can perform all its functions when working on surface targets, however, in this case, the quantitative characteristics of the ranges and probabilities of detection and tracking of targets are not standardized.

A known radar station, including an antenna post, a hardware container, a tower, wheeled tractors and a power supply associated with a power take-off generator from the engines of these tractors (RU 54212, class G01S 13/04, published June 10, 2006).

Famous radar is designed to track aircraft, such as: airplanes, helicopters, etc. in a complex and rapidly changing environment of air defense. The station is characterized by large dimensions, weight and energy consumed, which provides for its use only in conjunction with a large-sized ground vehicle, for example, in the form of the chassis of the KRA3-260 (255) tractor, to which its power supply is connected, allowing, in particular, to curtail deployment of this station.

The technical result of the utility model is to expand the operational capabilities of the radar associated with providing the possibility of its operation both in stationary and in the field, as well as increasing its mobility, reducing weight and power consumption, dimensions, autonomy, etc. At the same time, sufficient range and accuracy of detection of tracking objects in a ground (surface) environment, as well as the ability to simultaneously track up to 50 targets. So, for example, the detection range of a person is at least 7.5 km, and a car - 13 km.

The named technical result is achieved in a utility model through the following set of features.

A portable radar station for tracking ground and / or surface objects includes an antenna post including a solid-state transistor transceiver module, and a rotary support device associated with the antenna post, which can be mounted on a tripod. The antenna post is connected by a cable network to the power supply unit and the operator’s workstation, which is a geographic information system interfaced with the satellite navigation system integrated into the station.

According to one embodiment of the utility model, the slewing ring is detachable in operation, single-axis with the possibility of tilting in the elevation plane by means of an eccentric latch on which the antenna post is fixed.

According to another embodiment of the utility model, the rotary support device is made integral in operation, two-coordinate, with the possibility of rotation in two planes: azimuthal and elevation through automatic drive control.

The station provides rotation of the movable part of the slewing ring in azimuth up to 350 degrees (± 175), in elevation - in the range of ± 20 degrees with a speed of up to 60 degrees per second.

The tripod is made in the form of a telescopic tripod with a support platform located in its upper part for mounting the support-rotary device.

A compass and level are fixed in the upper part of the tripod under the support platform, with each tripod leg equipped with fixing nuts and removable tips in the form of an elastic cap and spike, which provides for reliable installation of the station on a different support surface (soil, sand, ice, etc. )

The operator’s workplace is made in the form of a laptop, enclosed in a shockproof metal case.

Station details are detachable with the possibility of packing them in portable containers (backpack, case and suitcase).

The main characteristics of the radar

The frequency range (wavelength) used by the station is 9440 ... 9470 MHz.

Radar stations, as active devices, as well as due to the advantages of the range of emitted microwave energy, have a long detection range of objects and maximum all-weather protection, and therefore are the main means of detecting objects (targets) on the surface of the earth or water surface.

By its tactical and technical characteristics, the Rosa portable radar station allows you to work in an automated mode as a source of information about the ground (surface) situation in the tactical link of an automated technical control system for the customer’s units. For this purpose, the product software and user interface have a special unit that allows to issue codograms of the established type on the RS 232 serial port of the station workstation.

Normal operation of the product is only possible within the direct radio line of sight. The most effective use of the product is provided on an open, mainly flat terrain (on land) or on the sea coast. The more difficult the terrain, the lower the value of such a parameter as the opening ratio, and its use becomes less effective.

The station has the following detection ranges for ground moving targets with a probability of at least 0.9:

- people - up to 7.5 km;

- car - up to 10 km;

- truck - up to 13 km.

Station "Rosa" has modes of selection of moving targets, automatic tracking and target designation.

The antenna post is placed on a tripod (tripod). The station is available in two versions: with a two-axis rotary support device (OPU 2) and a single-axis rotary support device (OPU 1).

OPU 2 allows you to change the position of the electrical axis of the antenna of the product within:

- in azimuth - up to 270 degrees (at the command of the operator);

- elevation angle ± 20 degrees (at the command of the operator).

OPU 1 allows you to change the position of the electrical axis of the antenna of the product within:

- in azimuth - up to 270 degrees (at the command of the operator);

- elevation angle ± 20 degrees (manually).

In the scanning mode of operation, the magnitude of the viewing sector in azimuth can be set programmatically: 15, 45, 90, 180, or 270 degrees.

The station has a double redundant power supply system: from an industrial network with a voltage of 220 V 50 Hz or from batteries.

The station equipment consumes power no more than 220 W (in maximum mode) at a supply voltage of 24 V.

The weight of the station with a cable length of 20 m is not more than 31 kg.

Station packaging consists of:

- a shoulder bag made of water-repellent high-strength fabric, which houses:

- in the OPU 2 version, an integral radar assembly in operation, consisting of: an antenna post, a slewing ring and a cylindrical support;

- in the OPU version 1, a radar assembly detachable in operation, consisting of an antenna post and a slewing ring;

- a protective sealed suitcase (container) made of shockproof plastic, which houses the workplace (laptop) and product cables;

- a cover made of water-repellent high-strength fabric designed to be carried in the hand or on the shoulder in which the tripod is placed.

The total weight of the station with packaging is no more than 42 kg.

Preparation time for work at positive ambient temperatures - no more than 5 minutes.

The time of continuous operation from a set of fully charged batteries at positive ambient temperatures is at least 8 hours, at a temperature of minus 30 ° C - at least 3 hours. There are no time limits for continuous operation when working from an industrial network.

The utility model is illustrated by the drawing, in which Fig. 1 schematically shows a variant of a radar with a control system 1 in the deployed (working) position; figure 2 is the same for the radar option with OPU 2; figure 3 - presents a structural diagram of an antenna post radar.

The radar station shown in Fig. 1 consists of an antenna post 1 mounted using an eccentric lock 2 on a slewing ring (OPU 1), indicated by 3, mounted on a tripod in the form of a telescopic tripod 4 by means of a lock nut 5. Antenna post 1 connected by control cables 6 and power 7 to the operator’s workstation (laptop) 8 and the secondary power supply 9, respectively.

The radar station depicted in FIG. 2 differs from that described above by another structural embodiment of the rotary support device (OPU 2), indicated by 12.

Radar Design Description

Structurally, the station consists of four functionally completed parts: a radar module (RLM), a tripod (tripods), an operator's workplace (an industrial laptop) and a secondary power source.

The composition of the RLM includes: an antenna post (AP) 1 and a slewing ring 3, 12 (OPU 1 or OPU 2, depending on the version).

Structurally, the blocks and components of the radar equipment are fixed on a tripod (tripod) 4.

The equipment located on the OPU 2 has the ability to rotate in two planes (azimuthal and elevation) within the allowable rotation angles. As a result of rotation, the electric axis of the radar antenna moves in space and has the ability to occupy the position required to detect or recognize ground targets.

The rotation in two planes for the variant of the station with the OPU 2 is carried out by automatic control of the drive, and for the variant of the station with the OPU 1, the tilt in the elevation plane is carried out manually using the fixture-clown 2, on which the AP unit 1 is fixed.

The accuracy of reading the angle sensors is no worse than 0.1 degrees.

The design provides rotation of the moving part of the control gear in azimuth - up to 350 degrees (± 175), in elevation - in the range of ± 20 degrees with speeds up to 60 degrees per second. The operating values of the sectors of rotation and speed are set programmatically.

The operator’s workstation (RMO) 8 is designed to control station operating modes. RMO is a personal computer (laptop) of industrial design type Bit-RNB 1416-A790, made in shockproof metal case.

OPU and AP are controlled by cable 6. The product is equipped with two cables: one 20 m long (for portable radar operation) and the second - 100 m long (for stationary radar operation). These cables allow you to carry out the workplace of the operator from a tripod with radar to distances of up to 20 m and up to 100 m, respectively.

The diagonal RMO monitor is 14 inches. A standard configuration keyboard is built into the laptop case.

A supply voltage of 24 V is supplied to the radar equipment from the secondary power supply unit via cable.

The power supply system of the station consists of two replaceable units, each of which provides power to the station from various sources. The first power supply unit contains two rechargeable batteries of type CSB GP 12120 with a voltage of 12 V, capacity 12 A / h each and serves to operate the station at unprepared positions in stand-alone mode. The second power supply unit is an AC voltage converter 220 V 50 Hz to a constant voltage of 24 V and is used to connect the station to an industrial network when it is used in a stationary version or at positions where there is an industrial network voltage.

The station’s power supply system also includes: a second set of batteries for the first of the above blocks, a set of rechargeable batteries for the laptop of the operator’s workplace, and a battery charger for RMO batteries.

Description and operation of station components

1. Tripod

To place the antenna post in the station in the working position, use a tripod (tripod) 4.

The legs of the tripod and the central support are fixed, on which the rotary support device 3 is fixed, by the rotation of the nuts 10, and the rotation of the leg sections of the support, even in the released state of the nuts, is excluded. The special design of the joints protects against penetration into the attachment points of water, dust, and dirt in a fixed state. The top of the tripod is equipped with a bubble level and compass (not shown). The lower sections of the tripod legs are equipped with combined tips, making it easy to switch from the rubber caps 11 to the stainless steel spikes that make up the product. On one of the legs there is a handle made of porous rubber, which facilitates work in winter conditions. The tripod is equipped with a carrying case made of high strength material.

The main technical characteristics of the tripod are shown in table 1.

Table 1 Name of characteristic Value Number of sections four The maximum diameter of the tubes, mm 32 Minimum diameter of tubes, mm twenty Maximum height, mm 1575 Minimum height, mm 260 Folded Length, mm 610

2. Slewing ring

To ensure movement in space of the electric axis of the radar antenna in the station, a slewing drive type "Driveman" is used. OPU 2 is controlled in the horizontal (azimuthal) and vertical (elevation) planes using the electrical interface, control commands received from the RMO station. OPU 1 in the vertical (elevation) plane is set manually by the operator.

Technical characteristics of the control system are given in table 2.

table 2 Name of characteristic Value for OPU2 Value for OPU1 Net weight, kg 4,5 3.0 Load capacity kg 10.0 8.0 The limits of the inclination of the rocking chair in the elevation plane, degrees ± 20 The limits of the sector of rotation in azimuth, degrees 350 (± 175) Limits of change in scanning speed,% 0,1 ... 60 0,1 ... 20 Nominal scanning speed,% 10.0 10.0 The accuracy of the azimuth angle, degrees 0.1 0.1 Supply voltage, in 12 ... 24 12 ... 36 Control interface RS422 Ethernet RS422 Ethernet Operating temperature range, ° С from minus 32 to plus 71 from minus 40 to plus 60

3. Antenna post

Antenna post 1 is the main unit of a coherent solid-state digital radar station and serves to generate and radiate a probe microwave signal into space, as well as to receive and process signals reflected from targets. The AP has four tunable letter frequencies: 9440, 9450, 9460 and 9470 MHz.

The AP determines all the basic characteristics of the radar as a whole, which are given below.

Target Detection Range:

- person up to 7.5 km - a car up to 10 km - truck up to 13 km Instrument range 15 km

Accuracy of measuring coordinates and parameters of target movement:

- in azimuth no worse than 1.0 ° - in range not worse than 5 m - by speed not worse than 0.4 km / h

Resolution:

- in range not worse than 15 m - in azimuth no worse than 6 ° Review speed 10 ± 1%

AP is designed to work as part of the radar as a source of radar information and provides:

- the formation, emission and reception of microwave signals in accordance with the information received through the communication line from RMO RLM;

- digital coordinated filtering of received signals, detection and measurement of coordinates and speed of moving targets;

- reception of values of the angles of the azimuthal sensor from the OPU;

- the issuance of primary and secondary radar information with the coordinates and speeds of targets in real time in the processor module RMO;

- selection of the Doppler signal of the target (spectrum) and its output to the processor module RMO;

- automatic calibration by range and Doppler frequency;

- automatic control and issuance of messages on the technical condition of their own equipment to the processor module RMO;

Structurally, the AP is a sealed enclosure with modules placed in it. All external communications are via two connectors located on the back wall.

The front wall of the AP is a transparent film that protects the antenna from external influences.

The composition of the AP includes the following main parts (modules):

- antenna module (AM);

- transceiver module (PPM);

- digital filtering and signal processing module (ICFOS);

- switching module (MK);

- secondary power supply module (MVPIK);

- module of the reference frequency generator (GOCH).

The block diagram of the AP is shown in figure 3.

AM is designed to provide directional sensing produced by the AP, and subsequent spatial filtering of the echo signals. AM consists of microstrip microwave elements, the joint operation of which provides the required characteristics of the antenna module: beam width in two planes, gain, standing wave coefficient (SWR), etc.

PPM is designed to amplify signals, convert the carrier and intermediate frequencies of the signals, synthesize the reference frequencies of the AP. MRP consists of a receiving and transmitting module. MRP provides signal amplification and conversion of the intermediate frequency of the signal to the carrier frequency. The receiving module provides signal amplification and conversion of the carrier frequency of the signal into an intermediate frequency.

The reference frequency generator module provides synthesis of the reference frequencies of the local oscillators of the receiving and transmitting modules (9440-75 MHz) and the reference frequency for digital synthesis and sampling of echo signals (F _reference = 60 MHz).

MTsFOS designed for the synthesis, digital processing of echo signals and control the components of the AP. MTsFOS consists of an analog-digital multilayer board with microcircuits placed on it. MTsFOS synthesizes a sounding signal at an intermediate frequency, which is fed to the input of the PPM. Echo signals are fed to the input of the MCFOS from the PPM output at an intermediate frequency of 75 MHz.

Next, the signal is sampled using the reference frequency of the 60 MHz PPM generator. The discretized signal is subjected to digital processing in real time, which consists in digitally matched filtering, adaptive detection, determination of the coordinates and spectra of targets, followed by their output to a computer RMO.

MK is intended for switching control signals and data transmission from MTsFOS and MVPIK to internal and external devices associated with AP. MK consists of a digital multilayer board with microcircuits and provides the passage of digital control signals (reference frequency and switching of letter frequencies) and the supply voltage from the MTsFOS to the AP modules. The product can set four values of the letter frequencies of radiation: 9440; 9450; 9460 and 9470 MHz. Letter frequencies are set in technological mode and their change is not available to the operator. According to consumer requirements, the mode of setting the letter frequencies can be activated and made available to the operator, in addition, the AP includes the ability to implement automatic switching of letter frequencies during the operation of the radar.

MVPIK is designed to convert the supply voltage of the AP to the rated supply voltage of the AP modules. MVPIK consists of a multilayer board with a voltage converter module and converts voltage +12 V to a nominal value of +5 V. On a command from MTsFOS, MVPIK puts the AP equipment in standby mode, characterized by the minimum energy consumption of the AP modules.

Information is exchanged between the AP and the RLM processor unit via the RS 485 interface through the control board, console-2, and an interface converter, which is connected to the processor’s USB port.

The transceiver module (PPM) is structurally designed as a single module and contains a receiver and a transmitter. Both devices are made with one frequency conversion. The local oscillator frequency is 9365 MHz on the main letter 9440 MHz (the main letter is determined by the settings of the RF filters of the receiver and transmitter). The circulator is located inside the MRP. The gating and control signals (CCS), respectively PFR for the receiver and the PFD for the transmitter, are intended for gating the power amplifier and, at the same time, for activating the LNA protection at the time of radiation.

The reference frequency generator generates reference frequencies for the receiver and transmitter, as well as for the MTsFOS. All frequencies are generated from a single 30 MHz reference oscillator located in a thermostat and having a short-term stability of 10 ^-8 -10 ^-9 (over an accumulation interval of 140 ms). This is the time it takes to process information from one angular direction. The reference frequency is MTsFOS-60 MHz, this frequency is gated by an ADC and a digital signal synthesizer.

Digital local oscillator frequency synthesizer, controlled by signals from MTSFOS. In this system, it is possible to tune the local oscillator frequency (and, accordingly, the carrier) within 50 MHz.

At the MCFOS, the emitted signal is generated at the 75 MHz IF (the frequency of the digital-to-analog converter of the synthesizer is 300 MHz) and the signal is digitized at the 75 MHz IF with a sampling frequency of 60 MHz. Also, at MTsFOS, a coordinated filtering of signals and the formation of measurements are performed.

The blocks of the receiving-transmitting module and the reference frequency generator are made in separate sealed cases. For the formation of measurements and their attachment to angular directions, signals are sent to the MTsFOS from the sensors of the angular position of the OPU.

Exchange with the operator’s workstation is carried out via the RS 485 interface with speeds from 2 to 10 Mb / s.

4. Secondary power unit

The secondary power supply unit 9 is designed to provide power - DC voltage 24 V of the equipment of the product, excluding the workstation (laptop), which has its own built-in rechargeable batteries.

Block 9 is a sealed structure (metal case) with two covers - the top, through which the batteries are installed inside the unit, and a side screw-off cover on the thread to provide access to the cable connectors. The power cable of the product is connected to connector Ш1, and connector Ш2 serves to connect additional external devices. For example, when a product operates as part of a customer’s automated control system, power can be connected to these sockets for data transmission equipment.

5. Workplace of the operator

The operator’s workplace is an industrial computer (laptop) 8, which ensures the operator’s work with the product in all operating modes.

Thus, the advantages of the proposed design of the radar, designed to detect and track ground and / or surface targets, are as follows:

- the presence of a solid-state transistor transceiver module, which allows for minimum dimensions and power consumption to obtain a detection range of at least 7.5 km for a person, 13 km for a car .;

- the presence in the radar information processing system of the radar of the clustering mode, which allows for limited antenna sizes (the width of its radiation pattern is about 4.5 degrees) and for the size of the resolution element for a range of 15 meters, the azimuth measurement accuracy is no worse than 1 degree and the range accuracy is not worse than 5 meters;

- the product’s workplace is a specialized geographic information system (GIS) that allows you to display information and solve information and calculation problems using digital terrain maps;

- the product has an integrated satellite navigation system, information associated with the GIS of the operator’s workplace;

- the design capabilities of the radar make it possible to use it in a wearable (portable), mobile (on the basic automobile chassis) and stationary applications;

- the product has a system of automatic tracking of ground moving targets, which allows to simultaneously track (on the aisle) up to 50 targets;

- the product has special software algorithms for transmitting information to the automated control systems of the operating organization and the remote control mode via radio channel from ranges up to 30 km.

Claims (9)

1. A portable radar station for tracking ground and / or surface objects, comprising an antenna post, including a solid-state transistor transceiver module, and a rotary support device associated with the antenna post, configured to be mounted on a tripod, while the antenna post is connected by a cable network to power supply unit and operator’s workplace, which is a geographic information system interfaced with the satellite navigation system integrated into the station. 2. The station according to claim 1, characterized in that the rotary support device is made single-axis with the ability to tilt in the elevation plane by means of an eccentric latch on which the antenna post is fixed. 3. The station according to claim 1, characterized in that the rotary support device is made two-coordinate with the possibility of rotation in two planes: azimuthal and elevation by automatic control of the drive. 4. Station according to any one of paragraphs.2, 3, characterized in that it provides rotation of the movable part of the slewing ring in azimuth up to 350 degrees (± 175), in elevation - in the range of ± 20 degrees with a speed of up to 60 degrees give me a sec. 5. The station according to claim 1, characterized in that the tripod is made in the form of a telescopic tripod with a support platform located in its upper part for installing a support-rotary device. 6. The station according to claim 5, characterized in that the compass and level are fixed in the upper part of the tripod under the support platform. 7. The station according to claim 5, characterized in that each leg of the tripod is equipped with fixing nuts and removable tips in the form of an elastic cap and spike. 8. The station according to claim 1, characterized in that the operator’s workplace is made in the form of a laptop, enclosed in a shockproof case. 9. The station according to claim 1, characterized in that its parts are detachable with the possibility of packing them in wearable containers.