CN110943774A

CN110943774A - Real-time monitoring method and device for airplane flight state

Info

Publication number: CN110943774A
Application number: CN201911243209.XA
Authority: CN
Inventors: 刘金长; 马中刚; 马胜; 高平; 张丽丽
Original assignee: National Network Si Ji Shen Xiang Location Service (beijing) Co Ltd; State Grid Information and Telecommunication Co Ltd
Current assignee: National Network Si Ji Shen Xiang Location Service (beijing) Co Ltd; State Grid Information and Telecommunication Co Ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-03-31
Anticipated expiration: 2039-12-06
Also published as: CN110943774B

Abstract

The invention provides a real-time monitoring method and a real-time monitoring device for the flight state of an airplane. Because the single-transmitting satellite communication link is not provided with a receiving channel, the uplink data of the satellite link can be uploaded by simulating signals broadcast by a satellite channel, and the influence of Doppler frequency shift of a receiver in the flight process of an airplane can be avoided. The Beidou RDSS single-shot satellite communication link device is built with extremely low cost, is flexible to use, can monitor the flight attitude and the flight position of the airplane in real time, and can be used in practical application scenes such as information communication, rescue and the like of the airplane and the ground well.

Description

Real-time monitoring method and device for airplane flight state

Technical Field

The invention relates to the field of wireless communication and airplane flight safety, in particular to a method and a device for monitoring the flight state of an airplane in real time.

Background

At present, real-time monitoring and management of an airplane are difficult, and the black box technology only can store the flight attitude of the airplane, read the flight condition of the airplane through an external interface and cannot realize real-time return of the position information of the airplane for supervision by a ground service station.

On one hand, the flight height of the airplane exceeds the communication distance of the ground mobile communication base station in the cruising state. The traditional satellite communication system can send data to the satellite after receiving the satellite signal, and the aircraft is difficult to receive the satellite signal in the flight process due to the Doppler effect under high-speed movement, so that the aircraft is difficult to be applied to aircraft supervision. Therefore, the problem of high-speed flight communication in a high-speed motion state of the airplane needs to be solved when the flight supervision of the airplane is realized.

Disclosure of Invention

In the invention, the real-time return of the attitude information and the position information of the airplane is realized by building an independent Beidou RDSS single-transmission type satellite communication link and based on the satellite short message communication function. Because the single-transmitting satellite communication link is not provided with a receiving channel, the uplink data of the satellite link can be uploaded by simulating signals broadcast by a satellite channel, and the influence of Doppler frequency shift of a receiver in the flight process of an airplane can be avoided.

The invention specifically adopts the following technical scheme:

a real-time monitoring method for the flight state of an airplane is characterized by comprising the following steps: based on Beidou RDSS satellite short message communication, the aircraft flight state is uploaded through a Beidou RDSS single-shot satellite communication link.

Furthermore, the ground receiving station receives the flight state information of the airplane by adopting a Beidou communication front-end processor.

And a corresponding monitoring device scheme, characterized in that: the big dipper RDSS single shot satellite communication link includes: the satellite communication baseband circuit, the satellite communication radio frequency modem circuit and the satellite communication power amplifier circuit; the satellite communication baseband circuit is connected with an airplane controller terminal; the satellite communication power amplifier circuit is connected with the antenna.

Preferably, a baseband chip of the satellite communication baseband circuit adopts an FB310 chip; the satellite communication radio frequency modem circuit adopts an RF2052 radio frequency chip; the satellite communication power amplifier circuit adopts an LDMOS power amplifier with the model number of ABA 5412.

Preferably, a PIN _1 PIN of the FB310 chip is used as RDX _ RDSS, and is configured as a serial communication interface of TTL level and connected to an aircraft controller terminal.

Preferably, in the satellite communication radio frequency modem circuit, an RF2052 radio frequency chip is sequentially connected with: an output bandpass filter LIF2253, an out-of-band rejection filter SF1616, and a boost power amplifier BGA 217.

Preferably, the satellite communication baseband circuitry, the satellite communication radio frequency modem circuitry and the satellite communication power amplifier circuitry are powered by an aircraft onboard power supply.

Preferably, the antenna is arranged at the front windshield of the aircraft.

The invention and the optimal scheme thereof realize the real-time monitoring of the flight state information of the airplane in the flight process, and because no satellite receiving channel exists, the invention can not be influenced by Doppler frequency shift like a receiving channel of the traditional Beidou communication equipment. Meanwhile, the Beidou RDSS single-shot satellite communication link device is built at extremely low cost, is flexible to use, can monitor the flight attitude and the flight position of the airplane in real time, and can be used in practical application scenes such as information communication, rescue and the like of the airplane and the ground well.

Drawings

The invention is described in further detail below with reference to the following figures and detailed description:

FIG. 1 is a schematic diagram of a Beidou RDSS single-transmission satellite communication link structure according to an embodiment of the invention;

FIG. 2 is a schematic diagram of a baseband circuit for satellite communications according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a radio frequency modem circuit for satellite communication according to an embodiment of the present invention;

fig. 4 is a schematic circuit diagram of a satellite communication power amplifier according to an embodiment of the present invention.

Detailed Description

In order to make the features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail as follows:

the essence of the scheme of the embodiment is that if the airplane in the flying state is simulated into a satellite, the airplane flying state can be uploaded through the Beidou RDSS single-transmission type satellite communication link based on Beidou RDSS satellite short message communication. At the moment, the ground receiving station can adopt the Beidou communication front-end processor to receive the flight state information of the airplane, and the existing conventional equipment can be utilized to collect the information.

As shown in fig. 1, the beidou RDSS single-shot satellite communication link includes: satellite communication baseband circuitry, satellite communication radio frequency modem circuitry and satellite communication power amplifier circuitry. The satellite communication baseband circuit is connected with the aircraft controller terminal; the satellite communication power amplifier circuit is connected with the antenna.

Specifically, as shown in fig. 2, a baseband chip of the satellite communication baseband circuit adopts an FB310 chip to implement the function of the Beidou RDSS single-transmission satellite communication baseband processing part. The RDX _ RDSS and the TXD _ RDSS are configured to be serial communication interfaces with TTL level, and can be connected with the aircraft controller terminal to realize the instruction of informing the baseband of initiating the communication application by the aircraft controller terminal. In consideration of the reason that the present embodiment only needs to transmit data in one direction, the R75 resistor is a reserved empty resistor, and the channel of TXD _ RDSS is not actually enabled. VCC _ BB1.2 is the power supply voltage of the baseband processing chip core, which is supplied by an external power supply, and C113 and C115 are power supply filter capacitors, and have the function of preventing the ringing effect caused by the power supply current change when power is on and off.

As shown in fig. 3, the satellite communication RF modem circuit is implemented by using an RF integrated down-conversion chip of RFMD manufacturer, and the RF2052 has a pll frequency synthesizer and a down-converter, and the frequency of the vco portion of the pll frequency synthesizer is configured through the SPI interface, so as to implement modulation from baseband signals to RF signals.

In RF2052, LFILT1, LFILT2, and LFILT3 (pins 6, 7, and 8) connect low pass filters to the phase locked loop phase detector output to achieve closed loop control of the voltage controlled oscillator voltage to automatically lock onto the set frequency.

The RF2052 radio frequency chip is sequentially connected with: an output bandpass filter LIF2253, an out-of-band rejection filter SF1616, and a boost power amplifier BGA 217. The LIF2253 performs filtering on the up-converted signal, and removes the lower sideband signal, thereby performing final rf signal shaping filtering. The SF1616 primarily prevents out-of-band emissions of radio frequency signals from interfering with other communication devices. The BGA217 implementation pushes the output power to +10 dBm.

As shown in fig. 4, the satellite communication power amplifier circuit adopts an LDMOS power amplifier with a model number ABA5412, wherein VCC _5 is a supply current for a drain of an MOS transistor, and VC _2.7 is a bias voltage for a gate of the MOS transistor, which are both provided by a power supply circuit design.

In this embodiment, the satellite communications baseband circuitry, the satellite communications radio frequency modem circuitry, and the satellite communications power amplifier circuitry are powered by a power supply onboard the aircraft. The antenna can be arranged at the front windshield of the airplane so as to be convenient to install and fix and can play a better signal transmitting effect.

The present invention is not limited to the above preferred embodiments, and other various types of real-time monitoring methods and devices for flight status of an aircraft can be obtained by anyone who has the benefit of the present invention.

Claims

1. A real-time monitoring method for the flight state of an airplane is characterized by comprising the following steps: based on Beidou RDSS satellite short message communication, the aircraft flight state is uploaded through a Beidou RDSS single-shot satellite communication link.

2. The method for real-time monitoring of the flight status of an aircraft according to claim 1, wherein: and the ground receiving station receives the flight state information of the airplane by adopting a Beidou communication front-end processor.

3. A monitoring device for a real-time monitoring method of the flight status of an aircraft according to claim 1 or 2, characterized in that: the big dipper RDSS single shot satellite communication link includes: the satellite communication baseband circuit, the satellite communication radio frequency modem circuit and the satellite communication power amplifier circuit; the satellite communication baseband circuit is connected with an airplane controller terminal; the satellite communication power amplifier circuit is connected with the antenna.

4. A monitoring device for a real-time monitoring method of the flight status of an aircraft according to claim 3, characterized in that: a base band chip of the satellite communication base band circuit adopts an FB310 chip; the satellite communication radio frequency modem circuit adopts an RF2052 radio frequency chip; the satellite communication power amplifier circuit adopts an LDMOS power amplifier with the model number of ABA 5412.

5. A monitoring device of a real-time monitoring method of the flight state of an aircraft according to claim 4, characterized in that: and a PIN _1 PIN of the FB310 chip is used as RDX _ RDSS and is configured as a serial communication interface of TTL level and connected with an aircraft controller terminal.

6. A monitoring device of a real-time monitoring method of the flight state of an aircraft according to claim 4, characterized in that: in the satellite communication radio frequency modem circuit, an RF2052 radio frequency chip is sequentially connected with: an output bandpass filter LIF2253, an out-of-band rejection filter SF1616, and a boost power amplifier BGA 217.

7. A monitoring device for a real-time monitoring method of the flight status of an aircraft according to claim 3, characterized in that: the satellite communication baseband circuit, the satellite communication radio frequency modem circuit and the satellite communication power amplifier circuit are powered by an airplane onboard power supply.

8. A monitoring device for a real-time monitoring method of the flight status of an aircraft according to claim 3, characterized in that: the antenna is arranged at the front windshield of the airplane.