5.2m X-band Remote Sensing Antenna |

1. Overview of 5.2m X-band Remote Sensing Antenna

Antesky5.2M X band Remote Sensing Satellite Receiving antenna with model of ATSK-X520 is used to receive signals from middle and low orbit satellites, and complete the reception of signals from remote sensing satellites by the ground receiving system of remote sensing satellites.

ATSK-X520 5.2m Remote Sensing Satellite Receiving antenna is applied for receiving oceanic, meteorological and remote sensing satellites.The antenna adopts standard paraboloid, X-Y axis pedestal, antenna reflector has mesh, aluminum plate or aluminum plate aperture form, the whole antenna system structure is divided into antenna reflector, X axis, Y axis and pedestal as four parts. The antenna can work in L, S or X band, or L/X or S/X band. The tracking mode includes program tracking and auto tracking.

2. Key Features of 5.2m X-band Remote Sensing Antenna

X-Y axis pedestal eliminates overhead pass “keyhole”
High G/T value using dual shaped optics;
Automated operation and diagnostics;
High polarization isolation;
Automatic control system.

3. Technical specification of 5.2m X-band Remote Sensing Antenna

Model: ATSK-X520
3.1 Antenna Structure		Parameter
1)	Antenna diameter	5.2meter
2)	Pedestal Type	X-Y
3)	With the device of limited, security , stow and lock
4)	Antenna Motion Range	X/Y (±90°)
5)	The total outdoor weight	≤4.5 tons
3.2 X-Band Feed System		Parameter
6)	Operating Frequency	7950～8950MHz
7)	Polarization	Left/Right Circular Polarization(Data） Left/Right Circular Polarization (Tracking)
8)	Radiation Pattern First Sidelobe	≤-14dB
9)	Cross Polarization Isolation(on axis)	≤0.6dB(Within beam wave ±0.05° range）
10)	VSWR(In the Feed Line output and LNA input）	≤1.25:1
11)	G/T Value(On the condition of Sunny Day ;Gentle breeze; 5°EL and environment temperature 23℃）	≥28dB/K(X-band in all receiving band）
12)	Channel of Input and Output X-Data Channel Output	2 (Left/Right Circular Polarization)
12)	X -Tracking Channel Output	1 (Left/Right Circular Polarization for option)
3.3 Servo System		Parameter
13)	Speed	0.01-5°/s
14)	Angular Acceleration	0.01-5°/s²
15)	Servo System Band width	1.0Hz
16)	Axial Angle Accuracy	0.02°
17)	Axial Angle Resolution	0.015°
18)	Tracking Accuracy	Superior to 1/8 half-powder beam width
19)	Operational method	Standby, manual, remote control ,automatic track, programme track
20)	Time compensation, angle compensation function
21)	Servo parameters with debug/adjustable interface (or means)
3.4 Tracking System(Selective）		Parameter
22)	Channel
	Data Chanel	2
	Tracking Chanel	1
23)	LNA
	Operating frequency	7950-8950MHz
	Noise temperature(with the temperature of 23℃)	≥50K
	Gain	≥50dB
	Compression points P1，1dB	≥+10dBm
	VSWR	1.5:1
24)	Frequency Conversion Type	Primary frequency Mid-band frequency: 1200MHz
25)	Down Converter
	Input Frequency	7950MHz-8950MHz
	Output Frequency	1200±350MHz
	Image rejection	≥60dB
	Out of band rejection	≥50dB
	Noise Factor	≤16dB
26)	Tracking Receiver
	Input mid-band frequency	1200MHz
	Narrow band	Beacon signal tracking

4. Pedestal of 5.2m X-band Remote Sensing Antenna

X-Y antenna pedestal is mainly composed of X-axis device, Y-axis device and the pedestal. The structure of X-axis device and Y-axis device is basically the same, mainly including Az/El gear, left and right arms, reducer, servo motor, encoder, electromechanical limit device and other parts.