A method, system and device for simulating satellite-to-ground radio frequency transmission and reception verification

Abstract

The invention discloses a method, system and device for simulating satellite-to-ground radio frequency transceiver verification, which are used for simulating a satellite transponder and a device to be tested to perform ground self-loop joint test, debugging or maintenance. The device comprises: a horn antenna, which is fixedly connected to the outer side wall of a shell through a flange and is used to receive a microwave signal emitted by the device to be tested; an orthogonal mode coupler, which is installed in a position close to the horn antenna in the inner cavity of the shell, and whose receiving and transmitting end is connected to the horn antenna and is used to convert the microwave signal into a linear polarization signal; a phase-locked source, which is installed in the center of the inner cavity of the shell and fixed to the bottom of the shell by bolts and is used to emit a microwave signal of a predetermined frequency; a mixer, which is installed in the inner cavity of the shell and is away from the horn antenna on one side, and fixed to the bottom of the shell by bolts, and is respectively connected to the phase-locked source and the orthogonal mode coupler; the invention has stable and reliable performance, light weight, low power consumption, simple structure, low noise coefficient and high stray frequency.

Description

Technical Field

[0001] The present invention belongs to the technical field of simulated satellite communication, and in particular to a method, system and device for verifying simulated satellite-to-ground radio frequency transmission and reception. Background Art

[0002] Communication satellite transponders are also called communication satellite repeaters, or transponders for short. They are installed on satellites to receive and forward radio signals sent from satellite communication earth stations. They are devices that enable communication between earth stations or between earth stations and spacecraft. Transponders are used to amplify and frequency-convert received signals and retransmit them to satellite communication earth stations or spacecraft. Communication satellite transponders are divided into two categories: transparent transponders and processing transponders. In addition to low-noise amplification, frequency conversion, and power amplification, transparent transponders simply complete the forwarding task; in addition to forwarding signals, processing transponders also have signal processing functions.

[0003] The transponder is a communication subsystem in a communication satellite and is the core of the communication satellite. As a special device for ground testing of communication satellite transponders, the simulated transponder is mainly used to simulate the frequency relationship and level relationship of the transponder. The direct frequency conversion transponder has an adjustable signal size to simulate the situation where the signal of the actual communication satellite has different coverage field strengths in different regions. It is suitable for real-time communication of multiple sites and multiple antennas, and can change the uplink and downlink signal-to-noise ratios and simulate data rates under different signal-to-noise ratios. Summary of the invention

[0004] The purpose of the present invention is to provide a method, system and device for simulating satellite-to-ground radio frequency transceiver verification, so as to solve the problem of inconvenience in testing satellite communication equipment.

[0005] The present invention adopts the following technical scheme: a simulated satellite-to-ground radio frequency transceiver verification device, used to simulate a satellite transponder and a device to be tested to perform ground self-loop joint testing, debugging or maintenance, comprising:

[0006] The shell is a rectangular or cube-shaped

[0007] The horn antenna is fixedly connected to the outer side wall of the shell through a flange and is used to receive the microwave signal emitted by the device under test.

[0008] The orthogonal mode coupler is installed in the inner cavity of the shell near the horn antenna. Its receiving and transmitting ends are connected to the horn antenna to convert microwave signals into linear polarization signals.

[0009] The phase-locked source is installed at the center of the inner cavity of the shell and fixed to the bottom of the shell by bolts to transmit microwave signals of a predetermined frequency.

[0010] The mixer is installed in the inner cavity of the shell, on a side away from the horn antenna, and fixed to the bottom of the shell by bolts. It is connected to the phase-locked source and the orthogonal mode coupler respectively. It is used to receive the microwave signal of the phase-locked source and the linear polarization signal of the orthogonal mode coupler, and after frequency conversion, the microwave signal after frequency conversion is transmitted to the device under test through the orthogonal mode coupler and the horn antenna in turn.

[0011] Furthermore, it also includes a cross coupler which is coaxially arranged with the orthogonal mode coupler and installed at the bottom of the housing, and the cross coupler is used to transmit the detection microwave signal to the external detection system through the radio frequency cable;

[0012] It also includes a first filter coaxially arranged with the cross coupler and installed at the bottom of the housing, wherein the orthogonal mode coupler, the cross coupler and the first filter are sequentially arranged along the receiving channel and arranged transversely;

[0013] It also includes a second filter which is vertically arranged with the orthogonal mode coupler. The second filter is arranged on the transmitting channel and installed in the inner cavity of the shell and on one side close to the horn antenna.

[0014] Furthermore, a first attenuator, a second attenuator, and a third attenuator are correspondingly arranged between the mixer and the first filter, between the mixer and the second filter, and between the mixer and the phase-locked source, and the first attenuator, the second attenuator, and the third attenuator are all mounted on the bottom of the shell by bolts.

[0015] Furthermore, the first filter and the second filter are both installed in the shell through brackets, the two brackets are both L-shaped, and the vertical sections thereof are provided with grooves, and the transverse sections thereof are fixed to the bottom of the shell by bolts, and the two grooves are respectively used for one end of the first filter and the second filter to extend therein, so that the central axis of the first filter, the cross coupler, the orthogonal mode coupler and the horn antenna coincide; so that the second filter and the orthogonal mode coupler are arranged perpendicular to each other; and the mixer is installed in the shell through an n-shaped piece.

[0016] Furthermore, the phase-locked source is connected to a processor, which is used to control the phase-locked source to emit a microwave signal of a predetermined frequency. The processor is installed in the inner cavity of the shell, corresponding to one side of the cross coupler, and is fixed to the bottom of the shell by bolts.

[0017] A simulated satellite-to-ground radio frequency transceiver verification system is used to simulate a satellite transponder and a device under test to perform ground self-loop joint testing, debugging or maintenance, including:

[0018] Horn antenna, used to receive microwave signals from the device under test.

[0019] Orthogonal mode coupler, used to convert microwave signals into linearly polarized signals,

[0020] Phase-locked source, used to transmit microwave signals of a predetermined frequency,

[0021] The mixer is connected to the phase-locked source and the orthogonal mode coupler respectively, and is used to receive the microwave signal of the phase-locked source and the linear polarization signal of the orthogonal mode coupler, and after frequency conversion,

[0022] The frequency-converted microwave signal is transmitted to the device under test through an orthogonal mode coupler and a horn antenna in turn.

[0023] Furthermore, a cross coupler is connected between the orthogonal mode coupler and the mixer along the receiving path, and the cross coupler is used to transmit the detection microwave signal to the external detection system through the radio frequency cable; a first filter is also arranged between the cross coupler and the mixer; and a second filter is also connected between the mixer and the orthogonal mode coupler along the transmitting path.

[0024] Furthermore, a first attenuator, a second attenuator, and a third attenuator are correspondingly arranged between the mixer and the first filter, between the mixer and the second filter, and between the mixer and the phase-locked source.

[0025] Furthermore, the phase-locked source is connected to a processor, and the processor is used to control the phase-locked source to emit a microwave signal of a predetermined frequency. The phase-locked source is set with multiple frequencies, namely 1.5G, 1.75G, 2.3G, 2.8G, and 3.3G.

[0026] A method for simulating satellite-to-ground radio frequency transceiver verification is used to simulate a satellite transponder and a device under test to perform ground self-loop joint testing, debugging or maintenance, and is composed of the following steps:

[0027] The microwave signal from the device under test is received through the horn antenna.

[0028] The microwave signal is converted into a linearly polarized signal using an orthogonal mode coupler.

[0029] The cross coupler is used to transmit the linear polarization signal from the horn antenna to the external detection system through the RF cable.

[0030] A microwave signal of a predetermined frequency is emitted using a phase-locked source.

[0031] The microwave signal of the phase-locked source and the linear polarization signal of the orthogonal mode coupler are converted by a mixer.

[0032] The frequency-converted microwave signal is transmitted to the device under test through the orthogonal mode coupler and the horn antenna in turn.

[0033] The beneficial effects of the present invention are as follows: the present invention is particularly suitable for use as an analog repeater device for ground self-loop testing, debugging or maintenance of a satellite communication system, and can forward wireless signals with minimal additional noise and distortion, and with sufficient working frequency band and output power. The present invention has stable and reliable performance, light weight, low power consumption, simple structure, low noise coefficient, high spurious emission coefficient, strong anti-interference, simple control and convenient installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the device in the present invention;

[0035] Figure 2 It is a schematic diagram of the principle of the present invention;

[0036] Figure 3 It is an axonometric view of the device in the present invention.

[0037] Among them: 1. horn antenna; 2. shell; 3. phase-locked source; 4. mixer; 5. first filter; 6. second filter; 7. orthogonal mode coupler; 8. cross coupler; 9. processor; 10. first attenuator; 11. second attenuator; 12. third attenuator. DETAILED DESCRIPTION

[0038] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] The present invention also discloses a simulated satellite-to-ground radio frequency transceiver verification device, which is used to simulate a satellite transponder and a device to be tested to perform ground self-loop joint testing, debugging or maintenance, such as Figure 1 and Figure 3 As shown, it includes: a housing 2, a horn antenna 1, an orthogonal mode coupler 7, a phase-locked source 3 and a mixer 4. The housing 2 is a cube or a cuboid. The horn antenna 1 is fixedly connected to the outer side wall of the housing 2 through a flange. The horn antenna 1 is used to receive the microwave signal emitted by the device under test. The orthogonal mode coupler 7 is installed in the inner cavity of the housing 2 near the horn antenna 1, and its receiving and transmitting ends are connected to the horn antenna 1. The orthogonal mode coupler 7 is used to convert the microwave signal into a linearly polarized signal. The phase-locked source 3 is installed at the center of the inner cavity of the housing 2. , and is fixed to the bottom of the shell 2 by bolts. The phase-locked source 3 is used to transmit a microwave signal of a predetermined frequency. The mixer 4 is installed in the inner cavity of the shell 2, on a side away from the horn antenna 1, and is fixed to the bottom of the shell 2 by bolts. The mixer 4 is connected to the phase-locked source 3 and the orthogonal mode coupler 7 respectively; the mixer 4 is used to receive the microwave signal of the phase-locked source 3 and the linear polarization signal of the orthogonal mode coupler 7, and after frequency conversion, the microwave signal after frequency conversion is sequentially transmitted through the orthogonal mode coupler 7 and the horn antenna 1 to transmit the microwave signal to the device under test.

[0040] The device also includes a cross coupler 8 which is coaxially arranged with the orthogonal mode coupler 7 and installed at the bottom of the shell 2. The cross coupler 8 is used to transmit the detection microwave signal to the external detection system through the radio frequency cable; it also includes a first filter 5 which is coaxially arranged with the cross coupler 8 and installed at the bottom of the shell 2. The orthogonal mode coupler 7, the cross coupler 8 and the first filter 5 are arranged in sequence along the receiving channel and arranged horizontally; it also includes a second filter 6 which is vertically arranged with the orthogonal mode coupler 7. The second filter 6 is arranged on the transmitting channel and installed on the inner cavity of the shell 2, on one side close to the horn antenna 1.

[0041] A first attenuator 10, a second attenuator 11, and a third attenuator 12 are correspondingly arranged between the mixer 4 and the first filter 5, between the mixer 4 and the second filter 6, and between the mixer 4 and the phase-locked source 3. The first attenuator 10, the second attenuator 11, and the third attenuator 12 are all mounted on the bottom of the housing 2 by bolts.

[0042] The first filter 5 is installed in the housing 2 through a bracket. The bracket is L-shaped and has a groove in its vertical section. The transverse section is fixed to the bottom of the housing 2 by bolts. The groove is used for one end of the first filter 5 to extend into, so that the central axis of the first filter 5, the cross coupler 8, the orthogonal mode coupler 7 and the horn antenna 1 coincide. The mixer 4 is installed in the housing 2 through an n-shaped piece.

[0043] The second filter 6 is also installed in the shell 2 through a bracket. The bracket is L-shaped, and a groove is provided in its vertical section. The transverse section is fixed to the bottom of the shell 2 by bolts. The groove is used for one end of the second filter 6 to extend into, so that the second filter 6 and the orthogonal mode coupler 7 are arranged perpendicular to each other.

[0044] The phase-locked source 3 is connected to a processor 9, which is used to control the phase-locked source 3 to emit a microwave signal of a predetermined frequency. The processor 9 is installed in the inner cavity of the shell 2, corresponding to one side of the cross coupler 8, and is fixed to the bottom of the shell 2 by bolts.

[0045] The present invention discloses a simulated satellite-to-ground radio frequency transceiver verification system, which is used to simulate a satellite transponder and a device to be tested to perform ground self-loop joint testing, debugging or maintenance, such as Figure 2 As shown, it includes: a horn antenna 1, an orthogonal mode coupler 7, a phase-locked source 3 and a mixer 4, the horn antenna 1 is used to receive a microwave signal emitted by the device under test, the orthogonal mode coupler 7 is used to convert the microwave signal into a linearly polarized signal, the phase-locked source 3 is used to transmit a microwave signal of a predetermined frequency, the mixer 4 is connected to the phase-locked source 3 and the orthogonal mode coupler 7 respectively, the mixer 4 is used to receive the microwave signal of the phase-locked source 3 and the linearly polarized signal of the orthogonal mode coupler 7, and perform frequency conversion, wherein the microwave signal after frequency conversion is sequentially transmitted through the orthogonal mode coupler 7 and the horn antenna 1 to transmit the microwave signal to the device under test.

[0046] A cross coupler 8 is also connected along the receiving path between the orthogonal mode coupler 7 and the mixer 4. The cross coupler 8 is used to transmit the detection microwave signal to the external detection system through the radio frequency cable; a first filter 5 is also arranged between the cross coupler 8 and the mixer 4; and a second filter 6 is also connected along the transmitting path between the mixer 4 and the orthogonal mode coupler 7.

[0047] A first attenuator 10, a second attenuator 11, and a third attenuator 12 are provided between the mixer 4 and the first filter 5, between the mixer 4 and the second filter 6, and between the mixer 4 and the phase-locked source 3. The phase-locked source 3 is connected to a processor 9, which is used to control the phase-locked source 3 to transmit a microwave signal of a predetermined frequency. The phase-locked source 3 is provided with multiple frequencies, namely 1.5G, 1.75G, 2.3G, 2.8G, and 3.3G.

[0048] The present invention also discloses a simulation satellite-to-ground radio frequency transceiver verification method, which is used to simulate a satellite transponder and a device to be tested to perform ground self-loop joint testing, debugging or maintenance, and is composed of the following steps:

[0049] The microwave signal emitted by the device under test is received by the horn antenna 1.

[0050] The microwave signal is converted into a linearly polarized signal using an orthogonal mode coupler 7.

[0051] The cross coupler 8 is used to transmit the linear polarization signal from the horn antenna 1 to the external detection system through the radio frequency cable.

[0052] The phase-locked source 3 is used to transmit a microwave signal of a predetermined frequency.

[0053] The microwave signal of the phase-locked source 3 and the linear polarization signal of the orthogonal mode coupler 7 are converted by the mixer 4.

[0054] The frequency-converted microwave signal is transmitted to the device under test through the orthogonal mode coupler 7 and the horn antenna 1 in sequence.

[0055] The present invention receives a microwave signal emitted by a device under test through a horn antenna 1, converts the microwave signal into a linearly polarized signal after passing through an orthogonal mode coupler 7, and then enters a first filter 5 to filter out clutter signals and transmit a microwave signal of a predetermined frequency using the linearly polarized signal and a phase-locked source 3, performs down-conversion using a mixer 4, and transmits the microwave signal after frequency conversion to the device under test through the orthogonal mode coupler 7 and the horn antenna 1 in turn, thereby realizing the function of down-conversion forwarding and completing one frequency conversion.

[0056] The microwave signal of a predetermined frequency generated by the phase-locked source 3 is adjusted by the third attenuator 12 and then input to the mixer 4. The mixer 4 converts the received microwave signal of the predetermined frequency and the linear polarization signal and then outputs the microwave signal to the device under test.

[0057] A first attenuator 10, a second attenuator 11, and a third attenuator 12 are correspondingly arranged between the mixer 4 and the first filter 5, between the mixer 4 and the second filter 6, and between the mixer 4 and the phase-locked source 3. The first attenuator 10, the second attenuator 11, and the third attenuator 12 can manually or automatically adjust the signal attenuation size under different frequency bands, so that the signal size output by the antenna can match the normal satellite Ku-band field strength coverage, and adjust the circuit signal size.

[0058] The phase-locked source 3 has an extended frequency band selection, and can adjust different frequency bands manually or automatically. Five independent local oscillators are used to control the power supply of each local oscillator through a switch. Each local oscillator is combined by a bandpass filter to suppress the second harmonics of each local oscillator. The local oscillator switching switch is placed outside the housing 2 and needs to be controlled manually or automatically, which is convenient for manual operation. The control interface is RS232.

[0059] The specific technical indicators of the horn antenna are as follows:

[0060] Frequency range Gain Standing Wave 10.7-14.5GHz Receive 16dBi / Transmit 15dBi <1.2

[0061] Polarization of horn antenna

[0062] Linear polarization, adjustable, polarization direction can be adjusted by mechanical installation.

[0063] The specific technical indicators of the filter are as follows:

[0064] Specific technical indicators of the first filter 5:

[0065] Frequency range Insertion loss 12.75GHz 15.25GHz 13.75-14.5GHz <h2 style=";text-align:left;direction:ltr"><1.5dB<h2 style=";text-align:left;direction:ltr"> >30dB >30dB

[0066] Specific technical indicators of the second filter 6:

[0067] Frequency range Insertion loss 13.75GHz 10.7-12.75GHz <h2 style=";text-align:left;direction:ltr"><1.5dB<h2 style=";text-align:left;direction:ltr"> >30dB

[0068] Attenuator:

[0069] The signal attenuation in different frequency bands can be adjusted manually or automatically so that the signal output by the antenna can match the normal satellite Ku-band field strength coverage.

[0070] Specific technical indicators of the second attenuator 11:

[0071] Frequency range Attenuation Input standing wave Output standing wave 13.75-14.5GHz 5dB 2 2 13.75-14.5GHz 10dB 2 2 13.75-14.5GHz 15dB 2 2

[0072] The specific technical indicators of phase-locked source 3 are as follows:

[0073] Make 5 independent local oscillators: 1.5G / 1.75GHz / 2.3G / 2.8G / 3.3G. The power supply of each local oscillator is controlled by a switch. Each local oscillator is combined with a bandpass filter to suppress the second harmonics of each local oscillator. The local oscillator switch is placed outside the box. It needs to be controlled by manual and automatic command sending, which is convenient for manual operation. The control interface is RS232.

[0074] Extended frequency conversion relationship:

[0075]

[0076]

[0077] Power supply mode: AC 220V, 50Hz, power consumption <200W.

[0078] Environmental requirements: Storage temperature: -40℃~85℃; Working temperature: -30℃~65℃, Protection level, IP65.

Claims

1. A simulated satellite-to-ground radio frequency transceiver verification device, characterized in that: Used to simulate satellite transponders and the equipment under test for ground self-loop testing, debugging or maintenance, including: The housing (2) is in the shape of a cuboid or a cube. The horn antenna (1) is fixedly connected to the outer side wall of the housing (2) via a flange and is used to receive microwave signals emitted by the device under test. An orthogonal mode coupler (7) is installed in the inner cavity of the housing (2) at a position close to the horn antenna (1), and its receiving and transmitting ends are connected to the horn antenna (1) and are used to convert microwave signals into linearly polarized signals. A phase-locked source (3) is installed at the center of the inner cavity of the housing (2) and fixed to the bottom of the housing (2) by bolts, and is used to emit a microwave signal of a predetermined frequency. A mixer (4) is installed in the inner cavity of the housing (2) on a side away from the horn antenna (1) and fixed to the bottom of the housing (2) by means of bolts. The mixer (4) is connected to the phase-locked source (3) and the orthogonal mode coupler (7) respectively. The mixer is used to receive the microwave signal of the phase-locked source (3) and the linear polarization signal of the orthogonal mode coupler (7) and perform frequency conversion. The frequency-converted signal is sequentially transmitted to the device under test through the orthogonal mode coupler (7) and the horn antenna (1). It also includes a cross coupler (8) which is arranged transversely and coaxially with the orthogonal mode coupler (7) and installed at the bottom of the housing (2), and the cross coupler (8) is used to transmit a detection microwave signal to an external detection system via a radio frequency cable; It also includes a first filter (5) which is coaxially arranged with the cross coupler (8) and mounted on the bottom of the housing (2); the orthogonal mode coupler (7), the cross coupler (8) and the first filter (5) are arranged in sequence along the receiving channel and arranged in a transverse manner; It also comprises a second filter (6) arranged vertically to the orthogonal mode coupler (7), wherein the second filter (6) is arranged on the transmission channel and installed on a side of the inner cavity of the housing (2) close to the horn antenna (1); A first attenuator (10), a second attenuator (11), and a third attenuator (12) are provided between the mixer (4) and the first filter (5), between the mixer (4) and the second filter (6), and between the mixer (4) and the phase-locked source (3), respectively. The first attenuator (10), the second attenuator (11), and the third attenuator (12) are all mounted on the bottom of the housing (2) by means of bolts. The first attenuator (10), the second attenuator (11), and the third attenuator (12) manually or automatically adjust the signal attenuation in different frequency bands so that the signal output by the antenna matches the normal satellite Ku-band field strength coverage, and adjusts the circuit signal size; The phase-locked source (3) extends the frequency band selection, manually or automatically adjusts different frequency bands, and makes 5 independent local oscillators. The power supply of each local oscillator is controlled by a switch. Each local oscillator is combined by a bandpass filter to suppress the second harmonics of each local oscillator. The local oscillator switching switch is placed outside the housing (2) and is controlled manually or automatically.

2. The simulated satellite-to-ground radio frequency transceiver verification device according to claim 1, characterized in that: The first filter (5) and the second filter (6) are both installed in the housing (2) via brackets; the two brackets are both L-shaped and have a groove in their vertical sections; their transverse sections are fixed to the bottom of the housing (2) via bolts; the two grooves are respectively used for one end of the first filter (5) and the second filter (6) to extend therein, so that the central axes of the first filter (5), the cross coupler (8), the orthogonal mode coupler (7) and the horn antenna (1) coincide; so that the second filter (6) and the orthogonal mode coupler (7) are arranged perpendicular to each other; and the mixer (4) is installed in the housing (2) via an n-shaped piece.

3. A simulated satellite-to-ground radio frequency transceiver verification device according to claim 1 or 2, characterized in that: The phase-locked source (3) is connected to a processor (9), and the processor (9) is used to control the phase-locked source (3) to emit a microwave signal of a predetermined frequency. The processor (9) is installed in the inner cavity of the housing (2), on a side corresponding to the cross coupler (8), and is fixed to the bottom of the housing (2) by bolts.

4. A simulated satellite-to-ground radio frequency transceiver verification system, characterized in that: Used to simulate satellite transponders and the equipment under test for ground self-loop testing, debugging or maintenance, including: A horn antenna (1) is used to receive microwave signals emitted by the device under test. The orthogonal mode coupler (7) is used to convert the microwave signal into a linearly polarized signal. A phase-locked source (3) for transmitting a microwave signal of a predetermined frequency, The mixer (4) is connected to the phase-locked source (3) and the orthogonal mode coupler (7) respectively, and is used to receive the microwave signal of the phase-locked source (3) and the linear polarization signal of the orthogonal mode coupler (7), and perform frequency conversion. The frequency-converted signal is transmitted to the device under test through the orthogonal mode coupler (7) and the horn antenna (1) in sequence; A cross coupler (8) is also connected between the orthogonal mode coupler (7) and the mixer (4) along the receiving path, and the cross coupler (8) is used to transmit a detection microwave signal to an external detection system through a radio frequency cable; a first filter (5) is also provided between the cross coupler (8) and the mixer (4); and a second filter (6) is also connected between the mixer (4) and the orthogonal mode coupler (7) along the transmitting path; A first attenuator (10), a second attenuator (11), and a third attenuator (12) are provided between the mixer (4) and the first filter (5), between the mixer (4) and the second filter (6), and between the mixer (4) and the phase-locked source (3) respectively; The first attenuator (10), the second attenuator (11), and the third attenuator (12) manually or automatically adjust the signal attenuation in different frequency bands so that the signal output by the antenna matches the normal satellite Ku-band field strength coverage, and adjusts the circuit signal size; The phase-locked source (3) extends the frequency band selection, manually or automatically adjusts different frequency bands, and makes 5 independent local oscillators. The power supply of each local oscillator is controlled by a switch. Each local oscillator is combined by a bandpass filter to suppress the second harmonics of each local oscillator. The local oscillator switching switch is placed outside the housing (2) and is controlled manually or automatically.

5. The simulated satellite-to-ground radio frequency transceiver verification system according to claim 4, characterized in that: The phase-locked source (3) is connected to a processor (9), and the processor (9) is used to control the phase-locked source (3) to emit a microwave signal of a predetermined frequency. The phase-locked source (3) is provided with a plurality of frequencies, namely 1.5G, 1.75G, 2.3G, 2.8G, and 3.3G.

6. A method for verifying simulated satellite-to-ground radio frequency transceiver transmission, implemented by a device for verifying simulated satellite-to-ground radio frequency transceiver transmission as claimed in claim 1, characterized in that: It is used to simulate the satellite transponder and the equipment under test to conduct ground self-loop test, debugging or maintenance, and consists of the following steps: The microwave signal emitted by the device under test is received through the horn antenna (1). The microwave signal is converted into a linearly polarized signal using an orthogonal mode coupler (7). The cross coupler (8) is used to transmit the linear polarization signal from the horn antenna (1) to the external detection system through the radio frequency cable. A microwave signal of a predetermined frequency is emitted by a phase-locked source (3). The mixer (4) receives the microwave signal of the phase-locked source (3) and the linear polarization signal of the orthogonal mode coupler (7), and performs frequency conversion. The frequency-converted signal is transmitted to the device under test through the orthogonal mode coupler (7) and the horn antenna (1) in sequence.

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