Double-satellite communication test system

Abstract

The invention discloses a double-satellite communication test system, which relates to the technical field of satellite communication test and comprises a control cabinet, two U-T rotary tables, an external timing system signal source, an optical system, a satellite data transmission transceiver and the like. Wherein the external timing system signal source generates a reference pulse per second and sends the reference pulse per second to the turntable control cabinet and the data transmission transceiver mounted on the table surface of the U-T turntable; the control cabinet comprises a main control computer, a motion controller and a power driving unit, and the high-precision position and rate motion function of the rotary table is achieved. The satellite data transmission transceivers are installed on the surface of the rotary table and mainly achieve laser communication, and the optical system mainly changes the direction of a laser transmission path and achieves optical communication of the two data transceivers.

Description

Technical Field

[0001] The invention belongs to the technical field of satellite communication testing, and in particular relates to a dual-satellite communication testing system. Background Art

[0002] The dual-satellite communication test system usually refers to a system that uses dual satellites to transmit and test signals in the field of satellite communications. This system is usually used for communication testing between satellites, network performance verification, and communication protocol experiments; Main functions: Signal transmission test: Verify the signal transmission capability and stability between dual satellites. Communication protocol test: Check whether the dual-satellite system can correctly implement the predetermined communication protocol. Delay and packet loss rate measurement: Evaluate the performance indicators such as delay and packet loss rate of the communication link. Data transmission rate test: Measure whether the data transmission rate between dual satellites meets the design requirements. Main application scenarios: System verification before satellite launch: Perform a comprehensive test on the satellite communication system before launch to ensure its normal operation.

[0003] On-orbit testing: After the satellite is launched, the performance of the on-orbit dual-satellite system is evaluated. Scientific research and experiments: Conduct relevant scientific research experiments to verify the effectiveness of new communication technologies.

[0004] With the development of commercial aerospace technology, the requirements for on-orbit attitude adjustment and communication of various spacecraft, satellites, etc. are constantly increasing. In order to meet the precise calibration test of the operating attitude and communication of various satellites, the present invention proposes a dual-satellite communication test system for ground calibration test. Summary of the invention

[0005] The purpose of the present invention is to provide a dual-satellite communication test system to solve the problems in the above-mentioned background technology, which can meet the precise calibration test of the operating attitude and communication of various satellites and be used for ground calibration test.

[0006] The technical solution adopted to achieve the above purpose is: including a control cabinet, two UT turntables, a time signal source, two optical systems, and two satellite data transmission transceivers.

[0007] Preferably, the control cabinet is used to monitor key parameters such as communication status, signal quality, data flow, etc. between the two satellites in real time; and control the sending and receiving of signals, including switching between different working modes.

[0008] Preferably, the UT turntable is used to simulate different postures and angles to test the performance of the device under various conditions; the UT turntable includes an integrated sensor and a data acquisition system to record the performance of the device in different postures in real time.

[0009] Preferably, the timing signal source is used to generate a standardized time signal for use by other devices, and by providing a high-precision time signal, it ensures time synchronization between multiple devices or systems and eliminates delay differences.

[0010] Preferably, the satellite data transmission transceiver is used to send and receive data on multiple frequency bands, supporting two-way communication; modulating the transmitted data to meet the needs of satellite communication, and demodulating the received signal.

[0011] Preferably, the timing signal source continuously outputs a reference one-second pulse to the satellite data transmission transceiver and the control cabinet. The control cabinet receives the one-second pulse and performs timekeeping operations to align its own time to the reference time of the signal source to achieve consistency between the motion position data of the UT turntable and the data time of the satellite data transmission transceiver.

[0012] Preferably, the satellite data transmission transceiver is installed on the UT turntable surface to achieve reliable laser communication through an optical system.

[0013] Preferably, the control cabinet includes a main control computer, a motion controller and a power drive unit. During the test, the main control computer sends the position-rate-time to the motion controller in real time according to a given satellite motion position-rate-time data file. The motion controller drives the two UT turntables synchronously through the power drive unit to achieve high-precision position and rate movement.

[0014] Compared with the prior art, the present invention has the following advantages: (1) The timing signal source continuously outputs a reference one-second pulse to the satellite data transmission transceiver and the turntable control cabinet. The control cabinet receives the one-second pulse and performs timekeeping operations, aligning its own time to the reference time of the signal source to achieve consistency between the motion position data of the UT turntable and the data time of the data transmission transceiver; (2) The control cabinet includes a main control computer, a motion controller and a power drive unit. During the test, the main control computer sends the position-rate-time data file of the given satellite motion to the motion controller in real time. The motion controller drives the two UT turntables through the power drive unit to synchronously achieve high-precision position and rate motion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall architecture of the test system in the present invention.

[0016] Figure 2 This is the appearance drawing of the control cabinet and UT turntable. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with embodiments and drawings.

[0018] A dual-satellite communication test system comprises a control cabinet 1, two UT turntables 2, two optical systems 3, an external timing signal source 4, and two satellite data transmission transceivers 5; the control cabinet 1 is used for real-time monitoring of key parameters such as communication status, signal quality, and data flow between dual satellites; and control signal sending and receiving, including switching different working modes; the UT turntable 2 is used for simulating different postures and angles to test the performance of equipment under various conditions; the UT turntable 2 comprises an integrated sensor and a data acquisition system to record the performance of the equipment under different postures in real time; the timing signal source 4 is used for generating standardized time signals for use by other equipment, and by providing high-precision time signals, ensures time synchronization between multiple equipment or systems and eliminates delay differences; the satellite data transmission transceiver 5 is used for sending and receiving data on multiple frequency bands and supports two-way communication; the transmitted data is modulated to meet the needs of satellite communication, and the received signal is demodulated at the same time.

[0019] The timing signal source 3 generates a reference second pulse to the control cabinet 1 and the satellite data transmission transceiver 5 installed on the surface of the UT turntable 2; the control cabinet 1 includes a main control computer, a motion controller and a power drive unit to realize the high-precision position and rate movement function of the turntable; the satellite data transmission transceiver 5 is installed on the surface of the UT turntable, mainly to realize laser communication; the optical system 3 is mainly an optical structure composed of reflectors and lenses, which changes the direction of the laser transmission path to realize optical communication between the two data transceivers.

[0020] The timing signal source 4 continuously outputs a reference one-second pulse to the satellite data transmission transceiver 5 and the control cabinet 1. The control cabinet 1 receives the one-second pulse to perform timekeeping operations and align its own time to the reference time of the signal source. At the same time, the motion planning of the motion controller in the control cabinet 1 is subdivided 10,000 times according to the external input time. During the test, the main control computer sends the position-rate-time data file of the given satellite motion posture to the motion controller in real time. The motion controller drives the two UT turntables 2 through the power drive unit to synchronously achieve high-precision position and rate movement.

Claims

1. A dual-satellite communication test system, characterized in that: The invention comprises a control cabinet (1), two UT turntables (2), a time signal source (4), two optical systems (3), and two satellite data transmission transceivers (5).

2. A dual-satellite communication test system according to claim 1, characterized in that: The control cabinet (1) is used to monitor key parameters such as the communication status, signal quality, data flow, etc. between the two satellites in real time; and to control the sending and receiving of signals, including switching between different working modes.

3. A dual-satellite communication test system according to claim 1, characterized in that: The UT turntable (2) is used to simulate different postures and angles to test the performance of the device under various conditions; the UT turntable (2) includes an integrated sensor and a data acquisition system to record the performance of the device in different postures in real time.

4. A dual-satellite communication test system according to claim 1, characterized in that: The time synchronization signal source (4) is used to generate a standardized time signal for use by other devices, and by providing a high-precision time signal, ensures time synchronization between multiple devices or systems and eliminates delay differences.

5. A dual-satellite communication test system according to claim 1, characterized in that: The satellite data transmission transceiver (5) is used to send and receive data on multiple frequency bands and supports two-way communication; The transmitted data is modulated to suit the requirements of satellite communications and the received signals are demodulated.

6. A dual-satellite communication test system according to claim 4, characterized in that: The timing signal source (4) continuously outputs a reference one-second pulse to the satellite data transmission transceiver (5) and the control cabinet (1). The control cabinet (1) receives the one-second pulse and performs a timekeeping operation to align its own time with the reference time of the signal source, so as to achieve consistency in the movement position data of the UT turntable (2) and the data time of the satellite data transmission transceiver (5).

7. A dual-satellite communication test system according to claim 5, characterized in that: The satellite data transmission transceiver (5) is installed on the tabletop of the UT turntable (2) and realizes reliable laser communication through the optical system (3).

8. A dual-satellite communication test system according to claim 2, characterized in that: The control cabinet (1) comprises a main control computer, a motion controller and a power drive unit. During testing, the main control computer sends the position-rate-time to the motion controller in real time according to a given satellite motion position-rate-time data file. The motion controller drives two UT turntables (2) through the power drive unit to synchronously realize high-precision position and rate motion.

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