Aircraft telemetering transmitting device and implementation method

Abstract

The aircraft telemetering transmitting device comprises a frequency modulation module, a power amplification module and a secondary power supply module, the frequency modulation module is connected with the power amplification module, the secondary power supply module is connected with the frequency modulation module and the power amplification module, PCM / FSK and IQ modulation processing is carried out on signals in the frequency modulation module, and the frequency modulation module is connected with the power amplification module. The power amplification module has the advantages of flexible frequency and code rate configuration, small frequency adjustment step, zero frequency response and the like through filtering design and structural shielding design.

Description

Technical Field

[0001] The present invention relates to the field of aircraft telemetry transmitters, and in particular to an aircraft telemetry transmitting device and an implementation method thereof. Background Art

[0002] The telemetry transmitter is an important component of the aircraft telemetry system. It is used to transmit the PCM code stream data reflecting the working status of each aircraft equipment during the missile flight (including working voltage, vibration, impact, temperature and other parameters detected by sensors) in the form of wireless transmission in real time after PCM-FM modulation and power amplification. The data is received and processed by the ground telemetry station, providing data support for the performance evaluation and fault analysis of the missile.

[0003] Traditional telemetry transmitters use microwave phase-locked frequency modulation technology. The phase-locked frequency modulation circuit is simple and directly outputs S-band frequency modulated signals. It has low power consumption and high spurious suppression. However, the microwave phase-locked frequency modulation circuit cannot respond to zero frequency and requires different hardware circuits to meet the requirements of different bit rates and frequency offset parameters. Therefore, it has poor flexibility.

[0004] Therefore, the inventor provides an aircraft telemetry transmission device and an implementation method. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an aircraft telemetry transmitting device and an implementation method thereof, so as to solve the problem that the telemetry transmitting device cannot respond to zero-frequency signals and the code rate configuration flexibility is not high.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] In a first aspect, the present invention provides an aircraft telemetry transmitting device, comprising: a frequency modulation module, a power amplifier module, and a secondary power supply module, wherein the frequency modulation module is connected to the power amplifier module, and the secondary power supply module is connected to the frequency modulation module and the power amplifier module respectively.

[0008] Furthermore, the secondary power supply module and the power amplifier module are fixed by screws to form the overall structure of the telemetry transmitter.

[0009] Furthermore, the hardware structure of the frequency modulation module is an independent FPGA printed circuit board.

[0010] Furthermore, the frequency modulation module is embedded and connected to the power amplification module.

[0011] In a second aspect, the present invention provides an aircraft telemetry transmission method, comprising the following steps:

[0012] The frequency modulation module receives the PCM signal, performs baseband modulation on the PCM signal, generates two-way modulated IQ baseband data, performs interpolation and orthogonal digital up-conversion processing on the IQ baseband data, and outputs a PCM / FSK modulated intermediate frequency signal.

[0013] The power amplifier module receives the PCM / FSK intermediate frequency signal generated by the frequency modulation module, performs mixing, filtering, power amplification, power division, and isolation processing on the signal, and outputs a high-power S-band transmission signal.

[0014] Furthermore, the frequency conversion processing is achieved by the frequency modulation module parsing and controlling the RS485 control instructions sent by the host computer, using the default frequency point data as a reference.

[0015] Furthermore, the default frequency point data is the last frequency point data stored in the E2PROM of the FPGA printed board read by the frequency modulation module.

[0016] Furthermore, the frequency modulation module implements TPC channel coding through RS485 control instructions sent by the host computer and sets different code rate parameters.

[0017] In a third aspect, the present invention provides a computer device comprising: at least one processor, and a memory communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor executes an aircraft telemetry transmission method according to the second aspect of the present invention.

[0018] In a fourth aspect, the present invention provides a computer-readable storage medium storing computer instructions for causing a computer to execute an aircraft telemetry transmission method according to the second aspect of the present invention.

[0019] The present invention uses PCM / FSK and IQ modulation to process the signal in the frequency modulation module, and adopts filtering design and structural shielding design in the power amplifier module, thereby improving the flexibility of frequency and code rate configuration, reducing the frequency adjustment step, and solving the technical problem of zero-frequency inability to respond. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specific implementation modes of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a structural schematic diagram of an aircraft telemetry transmitting device and an implementation method provided by the present invention.

[0022] In the figure:

[0023] 1- frequency modulation module, 2- power amplifier module, 3- secondary power supply module. DETAILED DESCRIPTION

[0024] The following detailed description and drawings are used to illustrate the principles of the present invention, but cannot be used to limit the scope of the present invention, that is, the present invention is not limited to the content.

[0025] Example 1

[0026] like Figure 1 As shown, this embodiment provides an aircraft telemetry transmitting device, including a frequency modulation module 1, a power amplifier module 2, and a secondary power supply module 3, wherein the frequency modulation module 1 is connected to the power amplifier module 2, and the secondary power supply module 3 is connected to the frequency modulation module 1 and the power amplifier module 2 respectively.

[0027] Furthermore, the secondary power supply module 3 and the power amplifier module 2 are fixed by screws to form the whole structure of the telemetry transmitter.

[0028] Furthermore, the hardware structure of the frequency modulation module 1 is an independent FPGA printed board.

[0029] Furthermore, the frequency modulation module 1 is embedded and connected to the power amplification module 2 .

[0030] Example 2

[0031] This embodiment provides an aircraft telemetry transmission method, comprising the following steps:

[0032] The frequency modulation module 1 receives the PCM signal, performs baseband modulation on the PCM signal, generates two-way modulated IQ baseband data, performs interpolation and orthogonal digital up-conversion processing on the IQ baseband data, and outputs a PCM / FSK modulated intermediate frequency signal.

[0033] The power amplifier module 2 receives the PCM / FSK intermediate frequency signal generated by the frequency modulation module 1, performs mixing, filtering, power amplification, power division, and isolation processing on the signal, and outputs a high-power S-band transmission signal.

[0034] Furthermore, the frequency conversion processing is achieved by the frequency modulation module 1 parsing and controlling the RS485 control instructions sent by the host computer, using the default frequency point data as a reference.

[0035] Furthermore, the default frequency point data is the last frequency point data stored in the E2PROM of the FPGA printed board read by the frequency modulation module.

[0036] Furthermore, the frequency modulation module 1 implements TPC channel coding through the RS485 control instruction sent by the host computer and sets different code rate parameters.

[0037] Example 3

[0038] An embodiment of the present invention provides a computer device, comprising: at least one processor, and a memory communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor executes an aircraft telemetry transmission method of embodiment 2 of the present invention.

[0039] Example 4

[0040] The embodiment of the present invention provides a computer-readable storage medium, which stores computer instructions, and the computer instructions are used to make a computer execute an aircraft telemetry transmission method of embodiment 2 of the present invention. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), a flash memory (Flash Memory), a hard disk (HDD) or a solid-state drive (SSD), etc.; the storage medium can also include a combination of the above-mentioned types of memory.

[0041] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention.

Claims

1. An aircraft telemetry transmitting device, characterized in that: include: A frequency modulation module (1), a power amplifier module (2), and a secondary power supply module (3), wherein the frequency modulation module (1) is connected to the power amplifier module (2), and the secondary power supply module (3) is connected to the frequency modulation module (1) and the power amplifier module (2), respectively.

2. An aircraft telemetry transmitting device according to claim 1, characterized in that: The power amplification module (3) and the secondary power supply module (3) are fixed by means of screws.

3. The aircraft telemetry transmitting device according to claim 1, characterized in that: The hardware structure of the frequency modulation module (1) is an independent FPGA printed board.

4. The aircraft telemetry transmitting device according to claim 1, characterized in that: The frequency modulation module (1) is embedded and connected to the power amplification module.

5. An aircraft telemetry transmission method, characterized in that: The steps include: The frequency modulation module (1) receives a PCM signal, performs baseband modulation on the PCM signal, generates two-way modulated IQ baseband data, performs interpolation and orthogonal digital up-conversion processing on the IQ baseband data, and outputs a PCM / FSK modulated intermediate frequency signal. The power amplifier module (2) receives the PCM / FSK intermediate frequency signal generated by the frequency modulation module (1), performs mixing, filtering, power amplification, power division and isolation processing on the signal, and outputs a high-power S-band transmission signal.

6. The method for transmitting remote sensing of an aircraft according to claim 5, characterized in that: The frequency conversion processing is achieved by the frequency modulation module (1) parsing and controlling the RS485 control instructions sent by the host computer, using the default frequency point data as a reference.

7. The method for transmitting remote sensing of an aircraft according to claim 5, characterized in that: The default frequency point data is the last frequency point data stored in the E2PROM of the FPGA printed board read by the frequency modulation module (1).

8. The method for transmitting remote sensing of an aircraft according to claim 5, characterized in that: The frequency modulation module (1) implements TPC channel coding through RS485 control instructions sent by the host computer and sets different code rate parameters.

9. A computer device, characterized in that: include: At least one processor, and a memory communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor executes an aircraft telemetry transmission method as described in any one of claims 5-8.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the aircraft telemetry transmission method described in any one of claims 5-8.

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