Keycom RCS05 Manual de usuario
Document number
14418D27-01
76.5 GHz
RCS Imaging Evaluation System
(76.5GHz Imaging RADAR)
MODEL : RCS05
FCC ID : 2AON3-RCS05
Instruction Manual
Ver. 6.12
April 02, 2019
Keycom Corporation
Introduction
This manual describes the function outline of the 76.5 GHz RCS Imaging Evaluation System (76.5 GHz Imaging RADAR),
the name and description of each part, operating procedures, precautions on use, and so on.
Safety Notices
CAUTION
A CAUTION notice denotes a hazard. It calls attention to an operating procedure,
practice, or the like that, if not correctly performed or adhered to, could result in
damage to the product or loss of important data. Do not proceed beyond a CAUTION
notice until the indicated conditions are fully understood and met.
WARNING
A WARNING notice denotes a hazard. It calls attention to an operating procedure,
practice, or the like that, if not correctly performed or adhered to, could result in
personal injury or death. Do not proceed beyond a WARNING notice until the indicated
conditions are fully understood and met.
WARNING
There is a reflecting mirror rotating at high speed inside the device, and it is extremely
dangerous to use the device by opening the radome or the case.
Although the radome and the case are tightened so as not to be opened with TRX
Flat Head Screw , ＰＬＥＡＳＥ ＤＯ ＮＯＴ ＯＰＥＮ ＴＨＥＭ ＡＢＳＯＬＵＴＥＬＹ.
Please note that it will be out of warranty if opened.
1
1. System overview
In this system, reflection distribution from the object to be measured such as automobile can be displayed as an image,
and RCS * can be calculated from the measurement result. (RCS *: Radar Cross Section radar reflection cross section,
expressed in m 2 in real number, in dBsm in logarithm)
(1) Features of the system
(a) Millimeter wave pulse radar with a center frequency of 76.5 GHz, which is a specific low power device without
license.
(b) By using the parabolic mirror rotating at high speed for the reflector of the primary radiator, it is possible to obtain
a 3-dimensional wide range image in a short time.
(c) By specifying the horizontal and vertical rectangular range and distance range of the measured image, RCS
calculation is possible by selecting the object.
(d) Since all the CLK, IF, and RF signals are phase synchronized and the phase component of the signal is also detected
by the IQ Mixer, the data within the specified range is calculated by IQ phase synthesis of the total RCS and the peak
value Peak RCS can be calculated.
(2) Definition of coordinates
There are three types of coordinate system of the system, polar coordinates, orthogonal coordinates, and cell
coordinates. The definition of each coordinate system is explained below.
Polar coordinate
θ(Theta)、φ(Phi)、d
(d is the distance from the antenna to the target.)
Top view Side view
Cartesian coordinates
x, y, z
Top view Side view
“ “ is the front direction of the radar
RADAR
0° ＋θ
－θ
RADAR
0°
－φ
＋φ
RADAR
x
z
RADAR
z
y
2
Cell coordinates
Pθ, Pφ
The cell coordinates are the data cell number of the image screen. In the above figure, the range of horizontal 30 °
vertical 20 ° is measured in increments of 0.5 ° both in the horizontal and vertical directions, and is an example of the
cell coordinates when the number N of data in the horizontal direction is 61 and the number M of data in the vertical
direction is 41.
Correspondence between cell coordinates and polar coordinates
θ = P
θ
* (horizontal measurement angle unit) + horizontal measurement start angle
φ = P
φ
* (measurement unit in the vertical direction) + measurement start angle in the vertical direction
The measurement angle unit in the horizontal direction is fixed at 0.5 °, and the measurement angle unit in the vertical
direction may be 0.5 °, 1 °, 2 ° depending on the setting.
P
θ
=0,P
φ
=0 P
θ
=60,P
φ
=0
P
θ
=0,P
φ
=40 P
θ
=60,P
φ
=40
3
2. Explanation of each part
(1) Rear Panel
The cross mark of the photograph is the center position of the mirror
No. Name Description
1 LED Lights up when the power to the device is turned on.
2 Power switch This switch turns on / off power. Pressing "┃
" side pushes it ON,
pushing "○" side turns it OFF.
3 USB connector
Connects to the measuring computer Connector for inserting the USB
cable.
4 Synchronization signal
for
camera
0 V is output while image synch
ronization signal data of 4 cameras is
being acquired, and 3.3 V is output for the others.
5 DC 12 V power connector This is a 3 pin connector that connects DC 12 V AC adapter.
(2) Front Panel
No. Name Description
1 Handle Used for moving the movable hand tool.
2 Radome surface
It is a resin cover that covers the transmission direction surface of
the radome surface radio wave.
LED
Power switch
USB connector
Synchronization signal for camera
DC 12 V power connector
Handle
Radome surface
4
3. Measurement computer requirements
The requirements of the measuring computer connected to this system are as follows.
No. Item Requirement Remarks
1 CPU Intel Core 3 or higher
2 Memory 4G Bytes or more
3 HDD free space 32G Bytes or more
4 Display resolution 1280 x 1024 dots or more
5 I/O USB 2.0 1 port or more
6 OS Windows 7, windows 10 recommended
5
4. System startup and shutdown
(1) Start up the system
(a) Connect the instrument main unit and the measuring computer with a USB cable.
(b) Turn on the power switch of the main unit. (Push the "┃" side of the locker switch in)
(c) Turn on the measuring computer.
(d) When the OS of the measurement computer starts, start the measurement program (76 GHz RCSimaging.exe).
(CAUTION: Start up the measurement program after about 10 seconds elapsed after turning on the power of the unit.)
(2) System termination
(a) Exit the measurement program.
(b) Shut down the measuring computer and turn off the power.
(c) Turn off the main unit's power switch. (Push in the "○" side of the locker switch)
5. Preparation for measurement
(1) Installation of the main unit
Install the unit in a horizontal position.
Point the radome side (resin side) of the main unit toward the object to be measured.
(2) System initialization
When you start the measurement program, initialization processing of the main unit will be performed automatically.
The initialization process takes about 10 to 20 seconds, during which the wording "On Standby" appears in the message
display area. Also, since the key operation of the measurement program does not work, please wait until the end.
When initialization processing is completed, the word "Standby OK" is displayed in the message display area.
(3) Setting of automatic saving of csv file (Please refer to Appendix 1 for explanation of csv file.)
If you select "Auto save" from the "Settings" menu on the main screen, the following screen will be displayed.
① Check to save the data to a file while measuring.
② Specify the folder to save measurement data.
③ Specify a fixed character string to be added to the beginning of the file. The date and time (YYYYMMDDhhmmdd)
automatically appends this fixed character string to the file name, and the extension is csv.
①
②
③
6
6. Operation of measurement program
The operation of each measurement screen of the measurement program is explained below.
(1) Main screen
This is the first screen displayed when starting the measurement program. Operate this screen to perform image data
acquisition and RCS calculation operation.
No. Name Operation explanation
(1) Image display area This is an image display area where image images and graphs of
measurement data are displayed.
(2) Title Enter the name of the measurement. This input is saved in the
measurement data file.
(3) Comment Enter comments on measurement. This input is saved in the measurement
data file.
(4) Distance range Enter the distance range for which you want to measure the image.
Received signals outside the distance range are not displayed and are not
used for calculation. It can be set between 3 m and 55 m.
・Recalculate Click the Recalculate button when changing the distance range.
(5) Image This area allows you to make settings for displaying images.
・Max Level /Min Level Specify the maximum value and minimum value of the image display level.
・Redraw Click this to re-display the image.
・Cell frame display When checked, a border appears on the cell border of the image.
・φ Axis Fit To Screen When checked, in the image display, theφaxis is expanded to fill the
screen in the same way as ± 10 ° regardless of the set angle of the tilt.
・Distance specification You can drag the slide bar and display the image of the cross section with
the distance specified in units of 15 cm in the image display area.
(6) P (d) Graph This area can be used to display the P (d) Graph of the relationship
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(13 )
(12)
(14)
(15)
7
No. Name Operation explanation
between distance and received power.
P
θ
/
P
φ
Specify the cell coordinates on the screen for which you want to display
the P (d)graph. You can also specify it by clicking on the image screen.
・Graph display Click to display the P (d) Graph.
(7) P (x) graph A graph can be displayed on the relationship between the x coordinate
calculated from θ and distance d and received power. It is an area where
setting for that is done.
・Tilt Specify the tilt angle for displaying the P (x) graph.
・Detecting Range Detection distance range in the distance direction can be specified in units
of 0.15 m within the range of 0 to ± 1.5 m.
・Distance specification You can drag the slide bar in the specified tilt direction and display the
intensity graph in the X axis direction specified distance in 15 cm
increments. When specifying the detection range other than 0 m, this
distance specification is the median value.
・Graph display Click to display the P (x) graph.
(8) φrange
(Vertical tilt range)
Click to specify the measurement range of the tilt angle. As a guide
S: Short range (within about 10 m) is ± 10 °
M: Middle range (within about 20 m) is ± 5 °
L: Long range (about 40 m or less) is ± 2.5 °
Hold horizontally (Fix) for more than 40 m.
In the case of S, M, L, the range of the tilt angle set while the mirror turns
11 is scanned and measurement is completed.
S = 2 °, M = 1 ° and L = 0.5 ° for the tilt angle.
SH and MH are high definition mode measuring tilt in increments of 0.5 °,
SH is 41 turns and MH is 21 turns to scan one screen.
(9) Number of Measurement By checking "specify", you can specify the number of times to acquire
image data. When "Continuous" is checked, image data is continuously
acquired until "Stop Measurement" button is pressed.
(10) Start Turning Motor /
Stop Turning Motor
(Turning motor rotation)
Click to start turning the parabolic mirror.
While turning, "Stop Turning Motor" is displayed, and you can stop turning
the parabolic mirror by clicking.
(11) Start Measurement /
Stop Measurement
Click to start acquiring image data. During data acquisition, "Stop
Measurement" is displayed, and you can click to end data acquisition.
(12) Save As Image
(Save image data)
Data in the image display area can be saved as bitmap data or JPEG data.
(13) RCS Reference
(Reference value)
Click to capture the reflected received power of a known RCS corner
reflector as a reference to the system. (For details, see 7 (1))
(14) Target Click to calculate the RCS value of the target. (For details, see 7 (2))
(15) Message display area A message about the operation of the system is displayed.
8
（２）Setting parameters
Open the "Settings" menu on the main screen.
"Settings" menu
When "Parameter Setting 1" is selected, the following screen will be displayed.
The items that can be entered on the above screen are parameters related to the operation of the system, so there is
no need to change it.
If the system is operating normally, please do not change the value. To change the setting please enter the password
"keycom123".
A description of each parameter is explained in Appendix 2.
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