<s>
For	O
telemetry	O
,	O
tracking	O
,	O
and	O
command	O
(	O
TT&C	O
)	O
communication	O
,	O
the	O
HY-1A	O
uses	O
the	O
S-band	B-Algorithm
with	O
an	O
uplink	O
data-rate	O
of	O
2	O
kilobits	O
per	O
second	O
(	O
kbps	O
)	O
and	O
a	O
downlink	O
rate	O
of	O
4	O
kbps	O
.	O
</s>
<s>
HY-1A	O
stores	O
up	O
to	O
80	O
megabits	O
of	O
gathered	O
payload	O
data	O
from	O
the	O
onboard	O
COCTS	O
and	O
CZI	O
instruments	O
until	O
it	O
establishes	O
communications	O
with	O
the	O
Beijing	O
,	O
Hangzhou	O
,	O
and	O
Sanya	O
ground	O
station	O
to	O
downlink	O
the	O
payload	O
data	O
over	O
X-band	B-Algorithm
with	O
quadrature	B-General_Concept
phase	I-General_Concept
shift	I-General_Concept
keying	I-General_Concept
(	O
QPSK	O
)	O
at	O
a	O
rate	O
of	O
5.32	O
megabits	O
per	O
second	O
.	O
</s>
<s>
Developed	O
by	O
the	O
Shanghai	B-Device
Institute	O
of	O
Technical	O
Physics	O
(	O
SITP	O
)	O
,	O
a	O
subcomponent	O
of	O
the	O
China	O
Academy	O
of	O
Sciences	O
(	O
CAS	O
)	O
,	O
COCTS	O
comprises	O
a	O
focal	O
plane	O
array	O
(	O
FPA	O
)	O
,	O
scanner	O
,	O
an	O
electronics	O
box	O
,	O
and	O
a	O
series	O
of	O
optics	O
.	O
</s>
<s>
CZI	O
is	O
a	O
four-band	O
charge-coupled	B-Algorithm
device	I-Algorithm
(	O
CCD	O
)	O
,	O
pushbroom	O
multispectral	O
imager	O
(	O
MSI	O
)	O
.	O
</s>
<s>
Sometimes	O
referred	O
to	O
as	O
the	O
satellites	O
 '	O
four-band	O
CCD	B-Algorithm
imager	I-Algorithm
"	O
,	O
CZI	O
is	O
intended	O
to	O
provide	O
250m	O
spatial	O
resolution	O
imagery	O
over	O
coastal	O
regions	O
in	O
36°	O
(	O
500km	O
)	O
swaths	O
.	O
</s>
<s>
Haiyang	O
1C	O
and	O
Haiyang	O
1D	O
both	O
carried	O
an	O
ultraviolet	B-Application
imager	O
,	O
abbreviated	O
UVI	B-Application
,	O
providing	O
twice-daily	O
global	O
coverage	O
.	O
</s>
<s>
HY-1C	O
and	O
HY-1D	O
'	O
s	O
UVI	B-Application
images	O
in	O
two	O
ultraviolet	B-Application
bands	O
,	O
0.345	O
–	O
0.365µm	O
and	O
0.375	O
–	O
0.395µm	O
,	O
both	O
in	O
the	O
UV-A	O
range	O
.	O
</s>
<s>
Both	O
HY-1C	O
and	O
HY-1D	O
are	O
equipped	O
with	O
a	O
satellite	O
calibration	O
spectrometer	O
(	O
SCS	O
)	O
which	O
provides	O
on-orbit	O
radiometric	O
calibration	O
for	O
COCTS	O
and	O
UVI	B-Application
sensor	O
systems	O
.	O
</s>
