Furuno WR2120 Operator's Manual page 76

Block
Observed
Quality information
data
(*1)(*3)
block
Angle
Sweep 1
information
Sweep 1
・
Observed
data
Sweep 1
Sweep 1
・
Sweep 2
Sweep 2
・
・
・
・ ・
・
Sweep 2
・
Sweep 2
・
Sweep L
Sweep L
・
・
・
・
・
Sweep L
・
Sweep L
(*1) Only valid types are saved in the observed data block.
(*2)"YYYYMMDDhhmmss" of Clutter reference filename is stored.
(*3) GCR(MTI): Ground Clutter Rejection is moving a target Indicator.
SCR: Ship Clutter Rejection.
GCR(Ref): Ground Clutter Rejection is using a clutter reference map.
(*4) Derivation of the radar calibration constant.
�� : Wavelength [m]
2
| �� |
: Dielectric factor
��
: Transmitted power [mW]
��
��
: Horizontal -3 dB antenna beamwidth [rad]
ℎ
��
: Vertical -3 dB antenna beamwidth [rad]
ℎ
�� : Pulse width [μs]
�� : Antenna gain [dBi]
�������� : Loss of system [dB]
This definition of the radar constant is based on the following radar equation.
�� : Distance from the radar [m]
��
: Received power [mW]
��
(*5) In Dual or Triple PRF case, Nyquist velocity is expand by multi PRF method.
(*6) This value is antenna-end output power. It contains the waveguide (TX chain) loss.
Item
bit0: Signal shading,
bit1: Signal extinction,
bit2: Clutter reference,
bit3 ~ 5: Ground clutter quantity
0: Less than 0.1mm
1: More than 0.1mm
2: More than 1.0mm
3:More than 5.0mm
4: More than 10.0mm
5: More than 20.0mm
6: More than 50.0mm
7: More than 100.0mm
bit6: Pulse blind area
bit7: Sector blank
Angle Information 1
Observed data R
・
Observed data W
Observed data Quality
Angle Information 2
Observed data R
・
・
Observed data W
Observed data Quality
Angle Information L
Observed data R
・
・
Observed data W
Observed data Quality
10
2
�� = 10log (
10
�� 3 | �� |
������ = �� + 20log
Detail
/h
/h
/h
/h
/h
/h
/h
/h
2
( log 2 ) ��
e
) − 2�� + ��������
2 �� �� �� 300��
�� ℎ ��
�� + 10log �� + 180
10 10 ��
66
Size Off-
Data type
[byte] set
2×M *
unsigned short