SkyRadar FMCW Base Module
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Synthetic Aperture Radar (SAR, iSAR)

SkyRadar's SAR system builds on the FMCW base module. Set on a linear high-precision conveyor, driven by a servo motor and controlled with an industrial drive system, it produces a variable number of radar images which are aggregated in a time-multiplex approach. 

 

General Features

SkyRadar FMCW SAR Hardware Features

Synthetic Aperture Radar (SAR) hardware setup, with servo controlled movement of the antenna on a linear rail.

  • Synthetic Aperture Radar (SAR) hardware setup, with DC-motor driven the antenna on a 2050 mm linear rail .
  • Phased-Array through a 2-segment patch antenna Default operation in at 24 GHz.

SkyRadar FMCW SAR Software Features

  • Wireless communication between Radar element and computers or CloudServer.
  • A –Scope, B-Scope with time-scale on the x-axis.
  • Very high resolution of the radar image through synthetic aperture image generation.

Stepper Motor

 A high precision brushless DC servo motor with integrated controller (stepper) actuates the linear drive.

high precision brushless DC servo motor with integrated controller (stepper)

Operating Voltage 12 V DC - 48 V DC
Peak Current (RMS) 6.3 A
Type Digital Inputs 24V, 5/24 V switchable
Type Analog Input 0-10 V
Type Digital Output Open-Drain (30 V max.)
Size 56 mm
Interface USB
Holding Torque 110 Ncm
Rated Current (RMS) 4.2 A
Number of Digital Inputs 6
Number of Analog Inputs 1
Digital Outputs 1
Encoder Resolution 1024 Cycles per Revolution
Weight 0,8 kg

 Table : Operative characteristics of the servo motor 

 

Linear Conveyor

The linear conveyor creates the defined and highly precise displacement, allowing the radar to shoot shifted images that will be aggregated into one high resolution images in a subsequent time-multiplex principle.

SAR Linear Conveyor

 
Length                           2,050 mm
Width 315 mm
Height approx. 850 mm
Required Space approx. 2,400 mm x 800 mm
Track Gauge 97 mm
Weight 5.6 Kg
Traverse Path 1,700 mm
Feed (1/U) 75,36 mm

 Table : Operative characteristics of the linear conveyor 

 

Programmable Logic Controller PLC

An industrial Siemens S7 PLC controls the conveyor's displacement.

Siemens S7 PLC to control the Synthetic Aperture Radar's displacement       P_ST70_XX_06485i Licence documents

 
Type                           Siemens SIMATIC S7-1200
CPU 1214C compact CPU
Onboard IO                                           14 DI, 24V DC; 10 DO Relay 0.5 A; 2 AI 0 - 10V
Power Supply 85 - 264 V AC at 47 - 63 Hz
Memory 75 KB
Licence                                                                     SIMATIC S7, STEP 7 BASIC V14 FLOATING LICENSE,
E-SW, SW AND DOCU. ON DVD, LICENSE KEY ON USB STICK,
2 LANGUAGES (GE,EN), REFERENCE HW: S7-1200

Table : Operative characteristics of the PLC

 

Human Machine Interface HMI

The displacement of the linear conveyor is controlled via an industrial Human Machine Interface by the German manufacturer Siemens.

Type                                                                        Siemens SIMATIC HMI KTP400 BASIC COLOR PN, BASIC PANEL
Operation Key and Touch
Display 4 " TFT 65536 colors
Interface ProfiNet

 Table : Operative characteristics of the HMI

 

Network

The components are connected through industrial Ethernet by the German manufacturer Siemens.

Ethernet Switch Siemens for SkyRadar SAR

Industrial Ethernet Switch                                                                                                                                                      Siemens SCALANCE XB005 UNMANAGED INDUSTRIAL ETHERNET SWITCH FOR 10/100 MBIT/S;
WITH 5 X 10/100MBIT/S TWISTED PAIR PORTS WITH RJ45-SOCKETS;
FOR CONFIGURING SMALL STAR AND LINE TOPOGRAPHIES;
LED DIAGNOSTICS, IP20, 24 V DC POWER SUPPLY
Connector Siemens SIMATIC NET INDUSTRIAL ETHERNET TP XP CORD
RJ45/RJ45, 
CAT 6,
CROSSED TP CABLE 4X2, 
PREASSEMBLED WITH 2 RJ45 CONNECTORS,
LENGTH 6 M
Licence Siemens SIMATIC WINCC BASIC V14 ENGINEERINGSOFTWARE,
FLOATINGLICENSESW 
AND DOCUMENTATION ON DVD,
FOR CONFIGURATION OF SIMATIC BASIC PANELS

 Table : Operative characteristics of the Network