P-18-MR Surveillance Radar Upgrade

Comparative  statement  of  basic  P‐ 18  radar  system  and 
modernized  P‐ 18‐ MR

Parameter
Basic version
P‐ 18MR version
1
Operational frequency bandwidth
Meter waves
Meter waves
2
Operational frequency band
150– 170MHz
145– 175MHz
3
Measured target parameters
Azimuth, range
Azimuth, range
4
Scale value of range to target on the screen
0 to 300 km
0 to 600 km
5
Range of target acquisition in case of target effective
reflecting surface is 1 m2 at various altitudes:
100m
500m
1000m
3000m
10 000m
25 000m
23km
50km
65km
110km
175km
230km
30km
60km
80km
120km
230km
285km
6
Possibility of transmitter frequency switching



Time required for switching
Electro‐mechanical
Four predefined and tined points with in
frequency band.


up to 3 sec 
Electronic.
112points with in frequency band with
shift 0.15MHz in any direction

up to 0.02 sec
7
Antenna rotation speed
2/4/6 RPM
3/6RPM
8
Accuracy of coordinates measurement (not worse):
range
azimuth

1 400m
0,8°

180m
0,4°
9
Neighbor targets resolution (not worse):
by range
by azimuth
2000m

400m

10
Type of scanning signals
Smooth radio pulse
Two frequency PSK
(phase shift key)
11
Transmitter power
pulse
mean
150– 170KW
150W
10KW
1KW
12
Receiver noise figure
7dB
2dB
13
Receiver dynamic range
40dB
100dB
14
Moving target indication
Analogue
Digital Doppler Moving Target Indication
15
False target rate stabilizing
Amplification
noise autoregulation
Constant False Alarm Rate (technology
realized by software)
16
Quantity of simultaneously tracked targets

up to 150
17
Capability of target bearing determination and transmission of
its value to friendly active jammer
not available
available
18
BITE
not available
available
19
Storage of combat operation data
Manual with us age of external recording
devices
Automatic electronic saving to data
storage device
20
Quantity of prime movers required
4
2 (3)
21
Crew
7
(technically qualified personnel)
4
(PC user grade personnel)
22
MTBF
150hrs
1000+hrs
23
Spare parts support
New parts are  not available due to
production stop
20 years guaranteed spare parts
availability
24
Integration of Indian Air Force IFF equipment
N/A
Available(data exchange protocol has to
be coordinated)
25

N/A
Available

P‐ 18‐МR  sur veillance  radar  subsystems

Radar antenna unit,including:
‐ Antenna system;
‐ 31М unit ( direct drive for antenna rotation);
‐ Radio receiving unit;
‐ Radio transmitting unit.
Equipment shelter,including:
‐ Two diesel engines;
‐ Fixed and portable auto mated workstations;
‐ Equipment for control and manage ment;
‐ Prime mover vehicle ( we propose Stallion 6x6;
‐ Medium duty vehicle by Ashok Leyland);



P‐ 18‐М R Surveillance Radar Subsystems . Radar antenna
platform unit

Radar antenna plat form unit includes:
Antenna system
31М unit (direct drive for antenna rotation) comprised of :
‐ three‐phase induction motor of rotation system;
‐ digital rotation sensor;
‐ digital tilt sensor;
‐ rotation controller (И2ВЕ 48 module);
‐ navigation system module.
Radio receiving unit comprised of :
‐ signal conditioning unit;
‐ receiver unit;
‐ controlling unit;
‐ power supply unit;
‐ mounting frame (rack).
Radio transmitting unit comprised of :
‐ amplifier unit (4 pcs);
‐ beam shaping unit;
‐ switching unit;
‐ divider unit;
‐ output filter;
‐ matc hing transformer;
‐ coupler unit;
‐ controlling unit;
‐ mounting frame (rack).



P‐18‐МR Surveillance Radar Subsystems . Surveillance
radar equipment shelter

Surveillance radar equipment shelter includes:
two automated computer workstations , namely :
‐ automated computer workstation inside the shelter ;
‐ automated portable computer workstation that can be used out side of the shelter ;
‐ connection cable pack .
two diesel generator sets;
communication equipment ;
storage devices;
equipment for control , management and protective purposes ;
Stallion 6x6 medium duty vehicle by Ashok Leyland .


Parameter
Value
1
Operational frequency range
145… 175 MHz
2
Transmitter frequency shift
0,2 MHz
3
Measured coordinates
azimuth,range
4
Target coverage range
from 4 to 600 km
5
Detection range (ha=6.35 m, with detection probability 0,8) at height:
100 m
500 m
1000 m
3,000 m
10,000 m
25,000 m

when RCS for
target equals 1m 2
30 km
60km
80 km
120 km
230 km
285km
6
Rotation speed
3/6 rpm
7
Target position accuracy i nterms of:
range
azimuth
180m
0,4°
8
Target position resolution in terms of:
range
azimuth
200m

9
Radio frequency pulse duration
26… 510
microseconds
10
Transmitterpower;
pulsed
mean
10 KW
1 KW
11
Receiver dynamic range
100dB


P‐ 18‐МR  Sur veillance  Radar  Specifications
P‐18‐МR surveillcance radar is equipped with solid
state transmitter and receiver (transmitter‐receiver unit ) .
Along with implementation of digital signal processing
technology this allows to achieve significantly  wider range for
air target detection. Detection coverage , shown below, are
defined for the following targets:
‐ RCS =1m2 (short dash line) for the P‐18 system (prior to
upgrade);
‐ RCS =1m2 (solid line) for P‐18‐МR system;
‐ RCS =15m2 (long‐dashed line) for P‐18‐МR system.


Transmitter‐receiver  unit  of  P‐18‐МR Surveillance  Radar
Transmitter unit upgrade envisages complete
replacement of radio transmitting unit with a new
solid‐state transmitter.
• Upgraded transmitter‐receiver unit includes:
‐ four similar amplifier units;
‐ binary quadrature divider and beam shaping unit;
‐ output bandwidth filter;
‐ measuring directional coupler;
‐ switching unit;
‐ controlling unit;
‐ powe r s upply unit.
• Radio transmitting unit is powered by three‐
phase alternating current rated at 380V, 50Hz.


Transmitter‐receiver unit of P‐18‐МR Surveillance  Radar


Parameter
Value
1
Operational frequency range, in MHz
145... 175
2
Nominal peak outputpower,in kW
10
3
Power output level deviation from nominal value with in operational frequency range,in kW
±1
4
Power output level instability within operating temperature range, in dB, no more than
1.5

Input signal parameters
5
Nominal pulse power input, in Watts
1
6
Radio frequency pulse duration, ti, in microseconds
6… 525
7
Radio frequency pulse interval, no less than
9 х pulse duration time
8
Radio frequency pulse ratio,no less than
10
9
Radio frequency pulse
Dual frequency
10
Type of modulation
Phase modulation,0 …
180°

Radio transmitting unit input parameters
11
Input impedance, in Ohm
50
12
Standing wave ratio(SWR),no more than
1.5

Radio transmitting unit output parameters
13
Output impedance, in Ohm
50

Transmitter‐receiver unit  of P‐18‐МR Surveillance  Radar

Radio receiving unit upgrade envisages complete replacement of radio receiving unit
with a new solid‐state receiver.
Upgraded reception unit includes:
‐ signal shaping unit;
‐ receiver unit;
‐ control unit;
‐ power supply unit.
Radio receiving unit is powered by three‐phase alternating current rated at 220 V, 50 Hz.



Parameter
Value
1Operational frequency range, in MHz
145...175
2Number of frequencies in one probing signal
2
3Total number of available frequency pairs (user configurable at automated computer workstation)
112


4Number of frequency pairs used in pseudo random frequency hopping mode
7
5Total number of frequency sets for pseudo random frequency hopping mode
16
6Type of intermodulation ЗРС
BPSK
7Radio receiving unit interference factor, in dB, no more than
2.5
8Radio receiving unit response, no less than: range zone 1 (4.5…12) km…‐ 112 dBm, range zone 2 (12…45) km…‐ 115 dBm, range
zone 3 (45…120) km…‐ 121 dBm, range zone 4 (120…400) km…‐ 124dBm
9Radio receiving unit dynamic range, in dB, no more than
100
10Suppression ratio of undesired echoes received from natural or man‐ made reflectors (“clutter”) such as
weather, buildings and targets with radial speed of 12.6 m/s in moving target indication (MTI) mode, dB,
no less than
40
11False alarm rate, no more than
10‐4
12Resistance to power radio frequency signals with duration up to 10 microseconds, in kW (no less than)
1.5
13Resistance to continuous signals rated at Watt (no less than)
10
14Power consumption, in Watts, no more than
150
15Radio receiving unit weight, in kg, no more than
13

Resistance to power radio frequency signals with duration up to 10 microseconds, in kW (no less than)
1.5


Automated computer  workstations  of P‐18‐МR
Surveillance Radar

Automated computer workstation of P‐18‐М R surveillance radar consists of
the following devices :
‐ monitor;
‐ functional key panels (located below the monitor);
‐ keyboard with functional keys;
‐ hand‐operated manipulator ;
‐ loud speaker control panel .
Functional key panels are located below the monitor and used for
surveillance radar management.Functional keys are listed below.
‐ POWER key:surveillance radar power turning on / off ;
‐ STAND BY (O N/O F F ) key : stand by mode activation / deactivation ;
‐ ROT key : antenna rotation activation / deactivation ;
‐ RAD key: radar transmission activation / d eactivat ion;
‐ DG1 / DG2 key: diesel‐generator unit turning on / off ;
‐ WORK key : operational mode activation / deactivation .


Automated computer  workstations  of P‐ 18‐МR
Surveillance Radar
Frequency shift support in P‐18‐МR surveillance radar system provided
high‐level protection against jamming attacks (active interference signals) .
Operational frequency hopping is applied in band width from 145 to 175 MHz.There
are predefined 224 carrier frequency letters and as additional jamming protection
measure the frequency hopping procedure is carried out pseudo randomly.
To discriminate a target against noise moving target indication (MTI)
mode is applied.Moving target indication (MTI) mode is activated in four  zones.
Surveillance radar operator can switch MTI mode between the following zones :
zone 1–5–12 km ; zone 2–12–45 km ; zone 3–45–120 km ; zone 4–120–600 km .
Fault detection system includes a self‐checking process that detects
faults and shows data about malfunctioning device or its element on the automated
computer workstation monitor.Information about faults is accessible on the screen
«HELP».

Automated computer  workstations  of P‐ 18‐МR
Surveillance Radar
In case P‐18‐МР  surveillance radar is positioned to send data for several
military units ,there is portable computer workstation that can be used
outside of the shelter.
Portable computer workstation has the following functions:
‐full control over P‐18‐MR radar;
‐display of secondary information from P‐18‐МR surveillance radar;
‐ display of secondary information transmitted by senior control unit
over radio orover IP;
‐ loudspeaker communication with the operator of automated
computer workstation;
‐ complete P‐18‐MR radar diagnostic.

P‐18‐МR Surveillance Radar Autonomous Supply System
The Purpose:
Diesel‐generator units supply three phase alternating
current rated at 380V,50Hz.While connection is
established with mains,radar uses 3 phase electricity
supply rated at 380/220VAC,50Hz.
Thediesel‐ generatorunitconsistsof:
‐ diesel‐generator unit (2pcs)controller
‐ 10kW diesel‐generator KUBOTA(2 pcs)
‐ control box












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