CN107466485B

CN107466485B - Channel parameter display method and device and control terminal

Info

Publication number: CN107466485B
Application number: CN201680017098.9A
Authority: CN
Inventors: 王宇; 范伟; 王乃博; 饶雄斌; 陈颖
Original assignee: SZ DJI Technology Co Ltd
Current assignee: SZ DJI Technology Co Ltd
Priority date: 2016-09-27
Filing date: 2016-09-27
Publication date: 2020-05-22
Anticipated expiration: 2036-09-27
Also published as: WO2018058325A1; CN107466485A

Abstract

A method, a device and a control terminal for displaying channel parameters are provided, wherein the method comprises the following steps: the method comprises the steps of obtaining a frequency point set obtained by sweeping according to a preset time resolution and a preset frequency resolution, determining a communication channel between a control terminal and an aircraft in the frequency point set, detecting channel parameters of the communication channel, and displaying the channel parameters to a user. By implementing the embodiment, the channel parameters of the currently used communication channel can be visually displayed for the user, so that the user can conveniently master the communication condition of the selected channel in real time, and the viscosity of the user can be improved.

Description

Channel parameter display method and device and control terminal

Technical Field

The application relates to the technical field of unmanned aerial vehicle communication, in particular to the fields of channel parameter calculation and unmanned aerial vehicle user interaction, and specifically relates to a channel parameter display method, a channel parameter display device and a control terminal.

Background

In the unmanned aerial vehicle communication system, the communication quality between the aircraft and the control terminal is an important performance index, and the important performance index determines whether long-distance high-definition image transmission can be realized, whether the aircraft can receive a remote control command and the like. At present, frequency band working equipment used by an unmanned aerial vehicle communication system is more and seriously interfered, if a user selects a channel seriously interfered, or the system automatically jumps to the channel seriously interfered, the communication quality between an aircraft and a control terminal can be reduced, so that the user can be brought with poorer flight experience, and the viscosity of the user is reduced.

Disclosure of Invention

The embodiment of the application discloses a method and a device for displaying channel parameters and a control terminal, which can visually display the channel parameters of a communication channel, so that the viscosity of a user can be improved.

The first aspect of the embodiment of the present application discloses a method for displaying channel parameters, which includes:

acquiring a frequency point set obtained by scanning frequency points according to a preset time resolution and a preset frequency resolution, wherein the frequency point set comprises at least one frequency point;

determining a communication channel between the control terminal and the aircraft in the frequency point set;

and detecting the channel parameters of the communication channel and displaying the channel parameters.

Optionally, before obtaining the frequency point set obtained by performing frequency point scanning according to the preset time resolution and the preset frequency resolution, the method further includes:

and sending indication information to the aircraft.

Optionally, the indication information includes information for indicating that the aircraft starts frequency point scanning.

Optionally, the indication information includes information about frequency band selection.

Optionally, the information on frequency band selection includes at least one of location information, country code and allowed frequency band information acquired by the control terminal.

Optionally, the obtaining of the frequency point set obtained by performing frequency point scanning according to the preset time resolution and the preset frequency resolution includes:

and acquiring a frequency point set obtained by the aircraft according to the preset time resolution and the preset frequency resolution and frequency point scanning according to the information about the frequency band selection.

Optionally, the determining a communication channel between the control terminal and the aircraft in the frequency point set includes:

receiving signals of a selected target frequency point from the frequency point set;

a communication channel between the control terminal and the aircraft is determined from the signal.

Optionally, the determining a communication channel between the control terminal and the aircraft according to the signal includes:

and responding to the signal, and determining at least one of a starting point, an end point and a channel bandwidth of a frequency band occupied by a communication channel between the control terminal and the aircraft according to the target frequency point.

Optionally, after obtaining the frequency point set obtained by performing frequency point scanning according to the preset time resolution and the preset frequency resolution, the method further includes:

determining a selectable frequency point range from the frequency point set according to the position information;

the receiving of the signal of the target frequency point selected from the frequency point set includes:

and receiving signals of a selected target frequency point from the selectable frequency point range.

Optionally, the method further includes:

acquiring the power spectral density of interference signals of each frequency point in the frequency point set in the channel bandwidth;

and displaying the power spectral density of the interference signal.

Optionally, the channel parameter includes an equivalent total interference energy value; the detecting the channel parameters of the communication channel and displaying the channel parameters includes:

in the process of using the communication channel for communication, detecting a first signal-to-noise ratio of the control terminal and a second signal-to-noise ratio of the aircraft, and acquiring a propagation extra loss value of the communication channel;

calculating the interference energy value of the communication channel according to the interference signal power spectral density of the target frequency point;

determining an equivalent total interference energy value of the communication channel according to the interference energy value, the first signal-to-noise ratio, the second signal-to-noise ratio and the propagation extra loss value;

the equivalent total interference energy value is shown.

Optionally, the channel parameters further include a noise floor; the presenting the channel parameter further includes:

and displaying the background noise.

Optionally, the channel parameter further includes a maximum flight distance; the detecting the channel parameters of the communication channel and displaying the channel parameters further includes:

acquiring a signal-to-noise ratio threshold of the control terminal side and transmission loss of a unit distance;

obtaining the maximum transmitting power allowed to be used by the current position according to the position information;

determining the maximum flight distance of the aircraft when the communication channel is used for communication according to the maximum transmitting power, the signal-to-noise ratio threshold, the transmission loss of the unit distance and the equivalent total interference energy value;

and displaying the maximum flight distance.

Optionally, the detecting the channel parameter of the communication channel and displaying the channel parameter further includes:

acquiring a signal-to-noise ratio threshold of the control terminal side and transmission loss of a unit distance, and acquiring the maximum transmitting power allowed to be used at the current position according to position information;

calculating the transmission loss of the reference distance according to the transmission loss of the unit distance;

determining an equivalent total interference energy value corresponding to the reference distance according to the transmission loss of the reference distance, the signal-to-noise ratio threshold and the maximum transmitting power;

and displaying the reference distance according to the equivalent total interference energy value corresponding to the reference distance.

Optionally, the reference distance is 1km and/or 4 km.

Optionally, the method further includes:

when the fact that the flying distance of the aircraft does not reach the maximum flying distance is detected, determining the reason that the flying distance of the aircraft does not reach the maximum flying distance, and generating prompt information, wherein the prompt information comprises the reason;

and displaying the prompt information.

A second aspect of the embodiments of the present application discloses a channel parameter display device, which includes:

the device comprises a first acquisition module, a second acquisition module and a third acquisition module, wherein the first acquisition module is used for acquiring a frequency point set obtained by scanning frequency points according to a preset time resolution and a preset frequency resolution, and the frequency point set comprises at least one frequency point;

the first determining module is used for determining a communication channel between the control terminal and the aircraft in the frequency point set;

a detection module for detecting channel parameters of the communication channel;

and the display module is used for displaying the channel parameters.

Optionally, the apparatus further includes:

and the sending module is used for sending the indication information to the aircraft.

Optionally, in the apparatus, the indication information sent by the sending module includes information used for indicating that the aircraft starts frequency point scanning.

Optionally, in the apparatus, the indication information sent by the sending module includes information about frequency band selection.

Optionally, in the apparatus, the information about the frequency band selection in the indication information sent by the sending module includes at least one of location information, a country code, and information about a frequency band allowed to be used, which are acquired by the control terminal.

Optionally, in the apparatus, a specific manner in which the first obtaining module obtains the frequency point set obtained by scanning the frequency points according to the preset time resolution and the preset frequency resolution includes:

Optionally, in the apparatus, the first determining module includes:

a receiving unit, configured to receive a signal of a target frequency point selected from the frequency point set;

a first determination unit for determining a communication channel between the control terminal and the aircraft on the basis of the signal.

Optionally, in the apparatus, a specific manner in which the first determining unit determines the communication channel between the control terminal and the aircraft according to the signal includes:

and responding to the signal, and determining the starting point and the ending point of the frequency band occupied by the communication channel between the control terminal and the aircraft according to the target frequency point.

Optionally, the apparatus, wherein,

the second determining module is further configured to determine a selectable frequency point range from the frequency point set according to the position information;

the specific way for the receiving unit to receive the signal of the target frequency point selected from the frequency point set and the set channel bandwidth comprises the following steps:

Optionally, the apparatus further includes:

a second obtaining module, configured to obtain power spectral density of an interference signal of each frequency point in the frequency point set within the channel bandwidth;

the display module is further used for displaying the power spectral density of the interference signal.

Optionally, the apparatus, wherein the channel parameter includes an equivalent total interference energy value; the detection module comprises:

the detection unit is used for detecting a first signal-to-noise ratio of the control terminal and a second signal-to-noise ratio of the aircraft in the process of communication by using the communication channel;

an acquisition unit configured to acquire a propagation excess loss value of the communication channel;

the calculating unit is used for calculating the interference energy value of the communication channel according to the interference signal power spectral density of the target frequency point;

a second determining unit, configured to determine an equivalent total interference energy value of the communication channel according to the interference energy value, the first signal-to-noise ratio, the second signal-to-noise ratio, and the propagation extra loss value;

the specific way of displaying the channel parameters by the display module comprises:

the equivalent total interference energy value is shown.

Optionally, in the apparatus, the channel parameter further includes a noise floor;

the specific way of displaying the channel parameters by the display module further includes:

and displaying the background noise.

Optionally, the apparatus, wherein the channel parameter further includes a maximum flight distance;

the acquiring unit is further configured to acquire a signal-to-noise ratio threshold at the control terminal side and a transmission loss in a unit distance, and acquire a maximum transmitting power allowed to be used at the current position according to position information;

the second determining unit is further configured to determine a maximum flight distance of the aircraft when the communication channel is used for communication according to the maximum transmission power, the signal-to-noise ratio threshold, the transmission loss per unit distance, and the equivalent total interference energy value;

and displaying the maximum flight distance.

Optionally, the apparatus, wherein,

the calculating unit is further used for calculating the transmission loss of the reference distance according to the transmission loss of the unit distance;

the second determining unit is further configured to determine an equivalent total interference energy value corresponding to the reference distance according to the transmission loss of the reference distance, the signal-to-noise ratio threshold, and the maximum transmission power;

Optionally, in the apparatus, the calculating unit is further configured to calculate a transmission loss of a reference distance of 1km and/or 4km according to the transmission loss of the unit distance;

the second determining unit is further configured to determine an equivalent total interference energy value corresponding to the reference distance according to the transmission loss of the reference distance of 1km and/or 4km, the signal-to-noise ratio threshold, and the maximum transmission power;

and displaying the reference distance according to the equivalent total interference energy value corresponding to the reference distance of 1km and/or 4 km.

Optionally, in the apparatus, the second determining module is further configured to determine, when it is detected that the flight distance of the aircraft does not reach the maximum flight distance, a reason why the flight distance of the aircraft does not reach the maximum flight distance;

the device further comprises:

the generation module is used for generating prompt information, and the prompt information comprises the reason;

the display module is also used for displaying the prompt message.

A third aspect of the embodiments of the present application discloses a control terminal, including:

the communication device is used for acquiring a frequency point set obtained by scanning frequency points according to a preset time resolution and a preset frequency resolution, wherein the frequency point set comprises at least one frequency point;

the processor is used for determining a communication channel between the control terminal and the aircraft in the frequency point set and detecting channel parameters of the communication channel;

and the output device is used for outputting the channel parameters.

Optionally, the communication device is further configured to send instruction information to the aircraft.

Optionally, the indication information sent by the communication device to the aircraft includes start information.

Optionally, the indication information sent by the communication device to the aircraft includes information about the frequency band selection.

Optionally, the information about the frequency band selection in the indication information transmitted to the aircraft by the communication device includes at least one of location information, country code, and allowed-use frequency band information.

Optionally, the specific manner of obtaining the frequency point set obtained by scanning the frequency points according to the preset time resolution and the preset frequency resolution by the communication device includes:

and acquiring a frequency point set obtained by scanning frequency points according to the information about the frequency band selection according to a preset time resolution and a preset frequency resolution.

Optionally, the specific manner in which the processor determines the communication channel between the control terminal and the aircraft in the frequency point set includes:

receiving, by the communications device, a signal selecting a target frequency point from the set of frequency points;

Optionally, the specific manner in which the processor determines the communication channel between the control terminal and the aircraft according to the signal includes:

Optionally, the processor is further configured to determine a selectable frequency point range from the frequency point set according to the location information;

the specific way for the processor to receive the signals of the selected target frequency point and the set channel bandwidth from the frequency point set through the communication device includes:

and receiving signals of a selected target frequency point from the selectable frequency point range through the communication device.

Optionally, the processor is further configured to obtain a power spectral density of an interference signal of each frequency point in the frequency point set within the channel bandwidth;

the output device is further configured to output the power spectral density of the interference signal.

Optionally, the channel parameter includes an equivalent total interference energy value; the specific way for the processor to detect the channel parameters of the communication channel includes:

detecting a first signal-to-noise ratio of the control terminal and a second signal-to-noise ratio of the aircraft during communication using the communication channel;

acquiring a propagation extra loss value of the communication channel;

the specific way of outputting the channel parameter by the output device includes:

and outputting the equivalent total interference energy value.

Optionally, the channel parameters further include a noise floor;

the specific way of outputting the channel parameter by the output device further includes:

and outputting the background noise.

Optionally, the channel parameter further includes a maximum flight distance;

the processor is further configured to obtain a signal-to-noise ratio threshold and a transmission loss in a unit distance at the control terminal, obtain a maximum transmission power allowed to be used by the current location according to location information, and determine a maximum flight distance of the aircraft when the communication channel is used for communication according to the maximum transmission power, the signal-to-noise ratio threshold, the transmission loss in the unit distance, and the equivalent total interference energy value;

the specific way of displaying the channel parameters by the output device further includes:

and displaying the maximum flight distance.

Optionally, the processor is further configured to obtain a signal-to-noise ratio threshold of the control terminal side and a transmission loss of a unit distance, obtain a maximum transmission power allowed to be used by the current location according to location information, calculate a transmission loss of a reference distance according to the transmission loss of the unit distance, and determine an equivalent total interference energy value corresponding to the reference distance according to the transmission loss of the reference distance, the signal-to-noise ratio threshold, and the maximum transmission power;

Optionally, the processor is further configured to obtain a signal-to-noise ratio threshold at the control terminal side and transmission loss of a unit distance, obtain maximum transmission power allowed to be used by the current location according to location information, calculate transmission loss of a reference distance of 1km and/or 4km according to the transmission loss of the unit distance, and determine an equivalent total interference energy value corresponding to the reference distance of 1km and/or 4km according to the transmission loss of the reference distance of 1km and/or 4km, the signal-to-noise ratio threshold, and the maximum transmission power;

Optionally, the processor is further configured to, when it is detected that the flight distance of the aircraft does not reach the maximum flight distance, determine a reason why the flight distance of the aircraft does not reach the maximum flight distance, and generate prompt information, where the prompt information includes the reason;

the output device is also used for outputting the prompt message.

Optionally, the apparatus further comprises a display device, wherein the display device is in communication connection with the output device and is used for displaying the channel parameters.

Optionally, the system further comprises a display device, wherein the display device is in communication connection with the output device and is used for displaying the power spectral density of the interference signal.

Optionally, the mobile terminal further comprises a display device, wherein the display device is in communication connection with the output device and is used for displaying the reference distance.

In the embodiment of the application, the channel parameter display device acquires the frequency point set obtained by sweeping according to the preset time resolution and the preset frequency resolution, and can detect the channel parameters of the communication channel and display the channel parameters to the user after the communication channel between the control terminal and the aircraft is determined in the frequency point set. By implementing the embodiment, the channel parameters of the currently used communication channel can be visually displayed for the user, so that the user can conveniently master the communication condition of the selected channel in real time, and the viscosity of the user can be improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic flow chart of a method for displaying channel parameters disclosed in this embodiment;

fig. 2 is a schematic flow chart of another method for displaying channel parameters disclosed in this embodiment;

FIG. 3 is a schematic diagram of an interactive interface for displaying channel parameters according to the embodiment;

fig. 4 is a schematic structural diagram of a channel parameter display apparatus disclosed in this embodiment;

fig. 5 is a schematic structural diagram of another channel parameter display apparatus disclosed in this embodiment;

fig. 6 is a schematic structural diagram of a control terminal disclosed in this embodiment.

Detailed Description

The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the application discloses a method and a device for displaying channel parameters and a control terminal, which can visually display the channel parameters of a communication channel, so that the viscosity of a user can be improved. The following are detailed below.

Please refer to fig. 1, which is a flowchart illustrating a method for displaying channel parameters according to the present embodiment. The method shown in fig. 1 may be applied to a channel parameter display apparatus, which may be applied to a control terminal, where the control terminal may include, but is not limited to, a remote controller, video glasses, a smart phone, a tablet computer, and the like. As shown in fig. 1, the method may include the steps of:

101. and acquiring a frequency point set obtained by scanning frequency points according to a preset time resolution and a preset frequency resolution.

In this embodiment, the channel parameter display device may perform frequency point scanning according to a preset time resolution and a preset frequency resolution to obtain a frequency point set, or perform frequency point scanning according to a preset time resolution and a preset frequency resolution by using an aircraft to obtain a frequency point set, and send the frequency point set to the channel parameter display device, which is not limited in this embodiment.

Specifically, the frequency point scanning may be performed in a usable frequency band, such as a civil frequency band, or may be performed in a frequency band selected by a user, so as to scan a plurality of frequency points and obtain a frequency point set.

Further, the channel parameter display device may display the scanned frequency point set to the user on an interactive interface, where the interactive interface is shown in fig. 3.

It can be understood that the channel parameter display device performs frequency point scanning on the time component according to a certain time interval, and determines a frequency point at a certain frequency interval on the frequency component, thereby obtaining a frequency point set.

As a possible implementation manner, before acquiring the frequency point set obtained by performing frequency point scanning according to the preset time resolution and the preset frequency resolution, the channel parameter display apparatus may further perform the following operations:

and acquiring the position information of the current position, and determining the frequency band allowed to be used by the current position according to the position information.

Correspondingly, the specific way for the channel parameter display device to obtain the frequency point set obtained by scanning the frequency points according to the preset time resolution and the preset frequency resolution may be as follows:

and acquiring a frequency point set obtained by scanning frequency points on the frequency band according to a preset time resolution and a preset frequency resolution.

In this embodiment, each country or region has a frequency band allowed to be used, and the channel parameter display device may determine the country or region where the channel parameter display device is currently located according to the location information, so that the frequency band allowed to be used may be acquired, and then frequency point scanning may be performed on the frequency band. The acquired frequency band allowed to be used may also be sent to the aircraft, and the aircraft performs frequency point scanning on the frequency point, which is not limited in this embodiment.

102. A communication channel between the control terminal and the aircraft is determined in the set of frequency points.

In this embodiment, the channel parameter display device may automatically select a communication channel in the frequency point set, and may also receive an input from a user, and the user determines the communication channel, which is not limited in this embodiment.

As a possible implementation manner, the specific manner of determining, by the channel parameter display apparatus, the communication channel between the control terminal and the aircraft in the frequency point set may be:

and receiving a signal of selecting a target frequency point and setting a channel bandwidth from the frequency point set, and determining a communication channel between the control terminal and the aircraft according to the signal.

Specifically, the specific way in which the channel parameter presentation device determines the communication channel between the control terminal and the aircraft according to the signal may be:

In a specific implementation, one way is as follows: the user can set the channel bandwidth on the display interface of the channel parameter display device, and if a target frequency point is selected from the displayed frequency point set, the channel parameter display device can receive the input of the user, so that the target frequency point is used as a central frequency point, and the communication channel is determined by combining the set channel bandwidth. The other mode is as follows: after a user selects a target frequency point in the displayed frequency point set, the channel parameter display device can display a frequency band frame, the user drags the frequency band frame by taking the target frequency point as any one side of the center, the frequency band frame can extend towards two sides by taking the target frequency point as the center, and the area covered by the time frequency band frame when dragging is stopped is the communication channel determined by the user. In addition, the channel bandwidth can be prefabricated, so that at least one of the starting point, the ending point and the channel bandwidth of the frequency band occupied by the communication channel between the control terminal and the aircraft can be input by a user, and the channel selection can be realized.

Further, the channel parameter display device may obtain the position information of the current position, and after displaying the frequency point set, determine the selectable frequency point range from the frequency point set according to the position information, and then the specific way for the channel parameter display device to receive the signal of the selected target frequency point and the set channel bandwidth from the frequency point set may be:

and receiving signals of a selected target frequency point and a set channel bandwidth from the selectable frequency point range.

In this embodiment, due to the limitation of the regulations on the sideband power, the transmission power used by a communication channel (such as a map-based link) between the aircraft and the control terminal may not reach the maximum value, and in order to avoid this, the channel parameter display device may determine the sideband power of the area to which the position belongs according to the position information, thereby determining the frequency point range that can be selected by the user, and thus may restrict the behavior of the user in selecting the frequency point to a certain extent.

That is to say, the channel parameter display device can display all the scanned frequency points, but can set the frequency point range that the user can select, so as to avoid the situation that the maximum transmission power cannot be reached when the aircraft is in communication with the control terminal (such as image transmission).

103. Detecting the channel parameters of the communication channel and displaying the channel parameters.

In this embodiment, the channel parameters may include a bottom noise of the communication channel, a downlink interference energy value, an equivalent total interference energy value, a maximum distance that the aircraft using the communication channel can fly, and the like, and this embodiment is not limited.

Further, before obtaining the frequency point set obtained by performing frequency point scanning according to the preset time resolution and the preset frequency resolution, the method further includes: and sending indication information to the aircraft. The indication information comprises information used for indicating the aircraft to start frequency point scanning; the method further comprises information about frequency band selection, wherein the information about frequency band selection comprises at least one of position information, country codes and allowed frequency band information acquired by the control terminal.

In this embodiment, the channel parameter display device may display the channel parameter of the channel when the map is transmitted, and may also display the channel parameter of the channel when the uplink instruction is sent, which is not limited in this embodiment.

It can be seen that, in the method described in fig. 1, after the frequency of the channel parameter display device is swept according to the preset time resolution and the preset frequency resolution, an optional frequency point set can be output, and after a communication channel between the control terminal and the aircraft is determined in the frequency point set, a channel parameter of the communication channel can be detected, and the channel parameter is displayed to a user. The displayed channel parameters can be updated in real time, and when the user selects the frequency point and the bandwidth in a dragging mode, the channel parameters are updated accordingly. By implementing the embodiment, the channel parameters of the currently used communication channel can be visually displayed for the user, so that the user can conveniently master the communication condition of the selected channel in real time, and the viscosity of the user can be improved.

Please refer to fig. 2, which is a flowchart illustrating another method for displaying channel parameters according to the present embodiment. As shown in fig. 2, the method may include the steps of:

201. and acquiring a frequency point set obtained by scanning frequency points according to a preset time resolution and a preset frequency resolution, and displaying the frequency point set.

202. And receiving a signal of selecting a target frequency point and setting a channel bandwidth from the frequency point set, and determining a communication channel between the control terminal and the aircraft according to the signal.

203. And acquiring the power spectral density of the interference signal of each frequency point in the frequency point set in the channel bandwidth, and displaying the power spectral density of the interference signal.

In this embodiment, the channel parameter display device may scan the interference signal, estimate a power spectrum value of the interference signal within the channel bandwidth by using a periodogram method, a Blackman-Tukey spectrum analysis method, a Bartlett method, a Welch method, a burg method, and the like, and calculate the power spectral density of the interference signal according to the power spectrum value within the channel bandwidth.

Furthermore, the channel parameter display device can display the power spectral density of the interference signal, so that a user can clearly know which interference signals in the frequency point range are weaker, and the user can conveniently select a communication channel with weaker interference signals.

In the specific implementation, since the user does not feel the change curve at too high a speed, it is difficult to display information that is easily accepted by the user. Therefore, when the channel parameter display device displays the power spectral density of the interference signal, the following processing needs to be performed on the channel parameter display device:

A. and in the same time plane, the frequency domain deresolution of the high-frequency resolution spectrum estimation value is merged, and the implementation process can be linear value average or dB value average, and a linear average mode is recommended.

B. The method includes filtering signal stationarity in a time direction, where the filtering may use a low-pass filter, and specifically may be a First Impulse Response (FIR) filter or an Infinite Impulse Response (IIR) filter, where this embodiment is not limited, an input of the filter may be a linear value input, or may be a dB value input, and a dB value input is recommended, and this embodiment is not limited.

C. In the same frequency point plane, the resolution of the high time resolution spectrum estimation value is merged, and the implementation process can be that a plurality of time windows carry out dB value averaging or the dB average after strong interference values are filtered according to a certain proportion. The ratio value is related to the operating characteristics of the communication system, such as how large a ratio of duty cycles the communication system can combat a strong interfering signal.

D. The time down-sampling may be a sorted proportional position extraction value, an overall average value, or an average value of all values below a certain sorting threshold.

E. The discrete points displayed on the interface can be connected and rendered by adopting an interpolation method for more attractive appearance. The interpolation method can be Bessel difference or 3-order spline difference, etc.

204. And in the process of communication by using the communication channel, detecting a first signal-to-noise ratio of the control terminal and a second signal-to-noise ratio of the aircraft, and acquiring a propagation extra loss value of the communication channel.

In this embodiment, in the process of performing communication using the communication channel, the aircraft may detect the second signal-to-noise ratio of the received signal, which is denoted by SINR _ uav, and may further calculate a propagation extra loss value, which is denoted by path _ loss _ offset, and send the propagation extra loss value to the channel parameter presentation device, and the channel parameter presentation device may obtain the first signal-to-noise ratio of the received signal at the control terminal, which is denoted by SINR _ rc.

In this embodiment, the channel parameter display apparatus may further obtain a signal-to-noise ratio threshold of the aircraft side received signal and a signal-to-noise ratio threshold of the control terminal side received signal, which are respectively represented by SINR _ th _ uav and SINR _ th _ rc.

It should be noted that, the sequence of step 203 and step 204 is not limited.

205. And calculating the interference energy value of the communication channel according to the power spectral density of the interference signal of the target frequency point, and determining the equivalent total interference energy value of the communication channel according to the interference energy value, the first signal-to-noise ratio, the second signal-to-noise ratio and the propagation extra loss value.

In this embodiment, since the Power spectral density of the interference signal of each frequency point is already displayed in step 203, when the user selects the target frequency point as the central frequency point of the communication channel, the channel parameter display apparatus may obtain the Power spectral density of the interference signal of the target frequency point, and use IPSD to represent the Power spectral density, so that the interference energy value of the communication channel may be calculated according to the Power spectral density, and the interference energy value is represented by Power _ rc. Detailed description of the invention

Comprises the following steps:

nf is the central frequency point (target frequency point), BW is the channel bandwidth.

Further, the channel parameter exhibition device calculates Delta _ SINR according to the first signal-to-noise ratio, the second signal-to-noise ratio and respective signal-to-noise ratio thresholds:

Delta_SINR＝(SINR_uav–SINR_th_uav)–(SINR_rc–SINR_th_rc)+margin_SINR，

the margin _ SINR is a preset constant threshold, which may be 5, and this embodiment is not limited. If Delta _ SINR is greater than 0, Delta _ SINR is assigned to 0, and if less than or equal to 0, Delta _ SINR is its own value.

Therefore, the channel parameter display device can calculate the equivalent total interference energy value of the communication channel according to Delta _ SINR, Power _ rc and path _ loss _ offset, which is expressed by Power _ total, and the specific calculation method is as follows:

Power_total＝Power_rc+Delta_SINR+path_loss_offset。

206. and acquiring a signal-to-noise ratio threshold of the control terminal side and the transmission loss of a unit distance, and acquiring the maximum transmitting power allowed to be used at the current position according to the position information.

In this embodiment, the channel parameter display apparatus may further obtain a signal-to-noise ratio threshold SINR _ th _ rc at the control terminal side and a transmission loss in a unit distance. Wherein the unit distance is usually 1km, the transmission loss per unit distance is a basic constant, and PL is used₀And (4) showing.

Furthermore, the maximum transmitting power allowed to be used by different regions or countries is different, and the channel parameter display device can also obtain the maximum transmitting power allowed to be used by the current position according to the position information of the current position obtained in advance. The maximum transmit Power is denoted by Tx _ Power.

It should be noted that, if the region or country corresponding to the location information has a sideband power limit, the maximum transmission power may also be a result of subtracting the sideband power from the maximum transmission power. Wherein, the sequence of step 205 and step 206 is not limited.

207. And determining the maximum flight distance of the aircraft when the communication channel is used for communication according to the maximum transmitting power, the signal-to-noise ratio threshold, the transmission loss of the unit distance and the equivalent total interference energy value.

In this embodiment, the channel parameter display device finally displays the transmission loss PL according to the maximum transmission Power Tx _ Power, the SINR _ th _ rc threshold, and the unit distance₀And calculating the maximum flying distance of the aircraft which can fly when the communication channel is used for communication with the equivalent total interference energy value Power _ total.

Specifically, assuming that the maximum flight distance is d, the channel parameter presenting apparatus may set the maximum flight distance to Tx _ Power-PL according to SINR _ th _ rc_dThe Power _ total calculates the maximum flight distance d. Wherein PL_dThe transmission loss of the maximum flight distance d is expressed by the following expression:

wherein d is₀Denotes unit distance, n denotes path loss exponent, X_σIndicating a shadow fade.

208. And showing the equivalent total interference energy value and the maximum flight distance.

In this embodiment, the channel parameter display device may display the two channel parameters on the interactive interface after calculating the equivalent total interference energy value and the maximum flight distance. This may facilitate a user to intuitively perceive the amount of interference energy for the currently selected communication channel and the maximum distance that the aircraft can fly.

As a possible implementation, the channel parameter presenting device may also present the noise floor at the control terminal side on the interactive interface.

As another possible implementation, the channel parameter display device may also display, on the interactive interface, a reference distance traveled by the aircraft, where the reference distance may be a unit distance, such as 1km, or another distance, such as 4km, and this embodiment is not limited. The method specifically comprises the following steps:

the channel parameter display device calculates the transmission loss of a reference distance according to the transmission loss of a unit distance acquired in advance, and calculates the transmission loss PL of the reference distance₀The specific calculation method of the equivalent total interference energy value corresponding to the reference distance determined by the signal-to-noise ratio threshold SINR _ th _ rc and the maximum transmission Power Tx _ Power at the control terminal is similar to the calculation of the maximum flight distance in step 207, and details of this embodiment are not repeated herein. The channel parameter display device outputs a reference line of the reference distance in the interactive interface according to the equivalent total interference energy value corresponding to the reference distance.

After the channel parameter display device displays the reference distance, the user can visually observe the maximum flight distance of the aircraft during communication by using the communication channel according to the equivalent total interference energy value of the communication channel and the equivalent total interference energy value corresponding to the reference distance.

For example, referring to fig. 3, fig. 3 is a schematic view of an interactive interface for displaying channel parameters according to the present embodiment. As shown in fig. 3, the horizontal axis of the coordinate axis represents the set of frequency points swept out in MHz. The left ordinate of the coordinate axis represents the intensity of the interference signal, the unit is dBm/MHz, the curve in the coordinate axis is the power spectral density of each frequency point in the channel bandwidth, the communication channel selected by the user is 2419.5 MHz-2429.5 MHz, and the water level line of the corresponding strip-shaped area in the range represents the equivalent interference energy value of the interference signal received by the communication channel. The right vertical axis of the coordinate axes outputs reference lines of reference distances, which are 1km and 4km, respectively. In the interactive interface shown in fig. 3, a user can select a communication channel in the interactive interface, and after the communication channel is selected, an equivalent total interference energy value of an interference signal of the communication channel is shown in the interactive interface, and is-96.2 dBm, and compared with a reference line, the equivalent total interference energy value is easy to find that the maximum flight distance of the aircraft in the communication channel does not exceed 1 km.

Furthermore, the channel parameter display device can display a downlink interference water level line, an uplink equivalent interference water level line and a shielding equivalent interference water level line. As shown in fig. 3, after the user selects the communication channel, the channel parameter display device calculates an equivalent total interference energy value, which is compared with the water level line, so that the user can clearly see the status of the communication channel. For example, when the equivalent total interference energy value exceeds the occlusion equivalent interference water line, it indicates that the communication channel is currently occluded.

As another possible implementation manner, while the channel parameter presenting device displays the channel parameter through the interactive interface, if it is detected that the flight distance of the aircraft does not reach the maximum flight distance, the reason why the flight distance of the aircraft does not reach the maximum flight distance may be further determined, so as to generate the prompt message, where the prompt message includes the reason why the flight distance of the aircraft does not reach the maximum flight distance. Further, the channel parameter presentation device may present the prompt information on the interactive interface.

In specific implementation, if the flight distance of the aircraft does not reach the maximum flight distance, the communication quality of the current communication channel is poor, and the channel parameter display device can detect the reason of the poor communication quality, such as outputting the channel parameters which do not meet the threshold condition.

Furthermore, the channel parameter display device can analyze specific reasons of the communication quality deterioration according to the channel parameters which do not meet the threshold condition, such as the existence of shielding, unreasonable user-selected channels, unreasonable control terminal antenna arrangement, signal interference of a control terminal or an aircraft and the like, so that the information is output on an interactive interface.

In addition, the channel parameter display device may also provide a specific adjustment scheme according to the reason for the degradation of the communication quality, such as suggesting that the user modifies the channel bandwidth to a certain extent to effectively avoid the interference.

It should be noted that, due to the influence of environmental factors, the intensity of the interference signal may change frequently, the channel parameter display device may update the power spectral density of each frequency point in the frequency point set at intervals, and the equivalent total interference energy value of the communication channel selected by the user may also change accordingly, so that the channel parameter display device may update the channel parameter of the communication channel in real time.

It can be seen that, in the method described in fig. 2, while the channel parameter display device displays the frequency point sets, the power spectral density of each frequency point in the channel bandwidth, the equivalent total interference energy value of the currently selected communication channel, the maximum flight distance of the aircraft, the reason why the flight distance does not reach the maximum flight distance, and the like can be displayed. The channel parameter display device displays rich interactive interfaces, so that a user can conveniently master the interference signal intensity of each frequency point and the interference signal intensity of a currently used communication channel in real time, and adjust and operate or change the communication channel with better channel quality according to the channel parameters displayed in the interactive interfaces, thereby obtaining better flight experience and improving the viscosity of the user.

Please refer to fig. 4, which is a schematic structural diagram of a channel parameter display apparatus disclosed in this embodiment. The device is applied to the control terminal. As shown in fig. 4, the apparatus may include:

the first obtaining module 401 is configured to obtain a frequency point set obtained by performing frequency point scanning according to a preset time resolution and a preset frequency resolution.

A first determining module 402, configured to determine a communication channel between the control terminal and the aircraft in the frequency point set acquired by the first acquiring module 401.

A detecting module 403, configured to detect the channel parameter of the communication channel determined by the first determining module 402.

A displaying module 404, configured to display the channel parameters detected by the detecting module 403.

Optionally, the display module 404 further displays the frequency point set.

Please refer to fig. 5, which is a schematic structural diagram of another channel parameter display apparatus according to the present disclosure. The channel parameter exhibition device shown in fig. 5 is optimized based on the channel parameter exhibition device shown in fig. 4. As shown in fig. 5, the apparatus may further include:

a sending module 408 for sending the indication information to the aircraft. The indication information may include information for indicating that the aircraft starts frequency point scanning, and may also include information about frequency band selection.

The information on the frequency band selection may specifically include at least one of location information, country code, and permitted-use frequency band information acquired by the control terminal.

The specific way for the first obtaining module 401 to obtain the frequency point set obtained by scanning the frequency points according to the preset time resolution and the preset frequency resolution may be:

and acquiring a frequency point set obtained by the aircraft according to the preset time resolution and the preset frequency resolution and according to the information about the frequency band selection through frequency point scanning.

Optionally, the first determining module 402 may specifically include a receiving unit 4021 and a first determining unit 4022, where:

a receiving unit 4021, configured to receive a signal that selects a target frequency point from the frequency point set and sets a channel bandwidth.

A first determination unit 4022 configured to determine a communication channel between the control terminal and the aircraft based on the signal received by the reception unit 4021.

Optionally, the apparatus may further include:

a second determining module 406, configured to determine the selectable frequency point range from the frequency point set according to the location information acquired by the second acquiring module 405.

The specific way for the receiving unit 4021 to receive the signal of the selected target frequency point and the set channel bandwidth from the frequency point set may be as follows:

and receives the signal of selecting the target frequency point from the selectable frequency point range determined by the second determining module 406 and setting the channel bandwidth.

Optionally, a specific manner in which the first determining unit 4022 determines the communication channel between the control terminal and the aircraft according to the signal may be:

Optionally, the apparatus may further include:

a second obtaining module 405, configured to obtain power spectral density of an interference signal of each frequency point in the frequency point set obtained by the first obtaining module 401 in the channel bandwidth.

And a display module 404, configured to display the power spectral density of the interference signal.

Optionally, the channel parameter may include an equivalent total interference energy value, and the detection module 403 may specifically include a detection unit 4031, an acquisition unit 4032, a calculation unit 4033, and a second determination unit 4034, where:

a detecting unit 4031, configured to detect a first signal-to-noise ratio of the control terminal and a second signal-to-noise ratio of the aircraft in a process where the aircraft and the control terminal communicate using the communication channel.

An obtaining unit 4032, configured to obtain a propagation extra loss value of the communication channel;

a calculating unit 4033, configured to calculate an interference energy value of the communication channel according to the power spectral density of the interference signal of the target frequency point acquired by the second acquiring module 407.

A second determining unit 4034, configured to determine an equivalent total interference energy value of the communication channel according to the interference energy value calculated by the calculating unit 4033, the first signal-to-noise ratio and the second signal-to-noise ratio detected by the detecting unit 4031, and the propagation extra loss value acquired by the acquiring unit 4032.

Further, the specific way for the presenting module 404 to present the channel parameter may include:

the equivalent total interference energy value is shown.

Optionally, the channel parameter may further include a noise floor, and the specific way for displaying the channel parameter by the displaying module 404 may further include: the noise floor is exhibited.

Optionally, the channel parameter may further include a maximum flight distance. The obtaining unit 4032 is further configured to obtain a signal-to-noise ratio threshold at the control terminal side and a transmission loss in a unit distance, and obtain the maximum transmission power allowed to be used by the current position according to the position information obtained by the second obtaining module 405.

The second determining unit 4034 is further configured to determine the maximum flight distance of the aircraft when the communication channel is used for communication according to the maximum transmit power acquired by the acquiring unit 4032, the signal-to-noise ratio threshold, the transmission loss of the unit distance, and the calculated equivalent total interference energy value.

Further, the specific way for the showing module 404 to show the channel parameter may further include: the maximum flight distance is shown.

Optionally, the obtaining unit 4032 obtains a signal-to-noise ratio threshold at the control terminal side and transmission loss in a unit distance, and after obtaining the maximum transmission power allowed to be used by the current position according to the position information obtained by the second obtaining module 405, the calculating unit 4033 is further configured to calculate the transmission loss in the reference distance according to the transmission loss in the unit distance.

The second determining unit 4034 is further configured to determine an equivalent total interference energy value corresponding to the reference distance according to the transmission loss of the reference distance, the signal-to-noise ratio threshold, and the maximum transmission power.

Then, the specific manner of displaying the maximum flying distance by the display module 404 may further include:

Specifically, the calculation unit 4033 is further configured to calculate a transmission loss for a reference distance of 1km and/or 4km from the transmission loss for the unit distance; a second determining unit 4034, configured to determine an equivalent total interference energy value corresponding to the reference distance according to the transmission loss of the reference distance of 1km and/or 4km, the signal-to-noise ratio threshold, and the maximum transmit power; the specific way for the displaying module 404 to display the channel parameters further includes: and displaying the reference distance according to the equivalent total interference energy value corresponding to the reference distance of 1km and/or 4 km.

Optionally, the second determining module 406 is further configured to determine, when it is detected that the flight distance of the aircraft does not reach the maximum flight distance, a reason why the flight distance of the aircraft does not reach the maximum flight distance.

The apparatus may further include:

the generating module 407 is configured to generate a prompt message, where the prompt message includes a reason why the flight distance of the aircraft does not reach the maximum flight distance.

Further, the display module 404 is further configured to display the prompt message.

It can be seen that, in the channel parameter display device described in fig. 4 and 5, while displaying the frequency point sets, the channel parameter display device can display the power spectral density of each frequency point in the channel bandwidth, the equivalent total interference energy value of the currently selected communication channel, the maximum flight distance of the aircraft, the reason why the flight distance does not reach the maximum flight distance, and the like. The channel parameter display device displays rich interactive interfaces, so that a user can conveniently master the interference signal intensity of each frequency point and the interference signal intensity of a currently used communication channel in real time, and adjust and operate or change the communication channel with better channel quality according to the channel parameters displayed in the interactive interfaces, thereby obtaining better flight experience and improving the viscosity of the user.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a control terminal disclosed in this embodiment. As shown in fig. 6, the control terminal 600 may include: at least one processor 601, such as a CPU, a communication device 602, an output device 603, a memory 604, and at least one communication bus 605, where the memory 604 may be a high-speed RAM memory, a non-volatile memory (non-volatile memory), such as at least one disk memory, and optionally, the memory 604 may also be at least one storage device located remotely from the processor 601. Wherein:

a communication bus 605 is used to enable connection communication between these components.

The memory 604 stores a set of program codes, and the processor 601, the communication device 602, and the output device 603 are configured to call the program codes stored in the memory 604 to perform the following operations.

The communication device 602 is configured to acquire a frequency point set obtained by performing frequency point scanning according to a preset time resolution and a preset frequency resolution, where the frequency point set includes at least one frequency point.

And the processor 601 is configured to determine a communication channel between the control terminal and the aircraft in the frequency point set, and detect a channel parameter of the communication channel.

An output device 603, configured to output the channel parameter.

Optionally, the output device 603 is further configured to output the frequency point set.

Optionally, the communication device 602 is further configured to send instruction information to the aircraft, where the instruction information may include information for instructing the aircraft to start frequency point scanning, and may also include information about frequency band selection.

Optionally, a specific manner for the communication device 602 to obtain the frequency point set obtained by performing frequency point scanning according to the preset time resolution and the preset frequency resolution may be as follows:

Optionally, the specific manner in which the processor 601 determines the communication channel between the control terminal and the aircraft in the frequency point set may be:

a signal for selecting a target frequency point from the frequency point set and setting the channel bandwidth is received by the communication device 602, and a communication channel between the control terminal and the aircraft is determined according to the signal.

Optionally, the specific way in which the processor 601 determines the communication channel between the control terminal and the aircraft according to the signal may be:

Optionally, the processor 601 is further configured to determine an optional frequency point range from the frequency point set according to the location information.

The specific way for the processor 601 to receive the signal of the selected target frequency point from the frequency point set and the set channel bandwidth through the communication device 602 may be as follows:

a signal for selecting a target frequency point from the selectable frequency point range and setting a channel bandwidth is received by the communication device 602.

Optionally, the processor 601 is further configured to obtain a power spectral density of an interference signal of each frequency point in the frequency point set within the channel bandwidth.

The output device 603 is further configured to output the power spectral density of the interference signal.

Optionally, the channel parameter includes an equivalent total interference energy value; the specific way for the processor 601 to detect the channel parameter of the communication channel may be:

in the process of communication by using the communication channel, detecting a first signal-to-noise ratio of a control terminal and a second signal-to-noise ratio of an aircraft, acquiring a transmission extra loss value of the communication channel, and calculating an interference energy value of the communication channel according to the power spectral density of an interference signal of the target frequency point; and determining the equivalent total interference energy value of the communication channel according to the interference energy value, the first signal-to-noise ratio, the second signal-to-noise ratio and the propagation extra loss value.

Further, the specific way for the output device 603 to display the channel parameter may include:

and outputting the equivalent total interference energy value.

Optionally, the channel parameters further include a noise floor; the specific way of outputting the channel parameter by the output device 603 may further include: the noise floor is exhibited.

Optionally, the channel parameter further includes a maximum flight distance; the processor 601 is further configured to obtain a signal-to-noise ratio threshold at the control terminal side and transmission loss in a unit distance, obtain a maximum transmission power allowed to be used at a current position according to the position information, and determine a maximum flight distance of the aircraft when the communication channel is used for communication according to the maximum transmission power, the signal-to-noise ratio threshold, the transmission loss in the unit distance, and the equivalent total interference energy value.

Further, the specific way of outputting the channel parameter by the output device 603 may further include:

and outputting the maximum flight distance.

Optionally, the processor 601 is further configured to obtain a signal-to-noise ratio threshold at the control terminal side and a transmission loss of a unit distance, obtain a maximum transmission power allowed to be used by a current position according to the position information, calculate a transmission loss of a reference distance according to the transmission loss of the unit distance, and determine an equivalent total interference energy value corresponding to the reference distance according to the transmission loss of the reference distance, the signal-to-noise ratio threshold, and the maximum transmission power.

The specific way of outputting the channel parameter by the output device 603 may further include:

and outputting the reference distance according to the equivalent total interference energy value corresponding to the reference distance.

The above reference distance may be 1km, 4km, etc., specifically:

the processor 601 is further configured to obtain a signal-to-noise ratio threshold at the control terminal side and transmission loss of a unit distance, obtain maximum transmission power allowed to be used by the current location according to location information, calculate transmission loss of a reference distance of 1km and/or 4km according to the transmission loss of the unit distance, and determine an equivalent total interference energy value corresponding to the reference distance of 1km and/or 4km according to the transmission loss of the reference distance of 1km and/or 4km, the signal-to-noise ratio threshold, and the maximum transmission power; the specific way of the output device to display the channel parameters further comprises: and displaying the reference distance according to the equivalent total interference energy value corresponding to the reference distance of 1km and/or 4 km.

Optionally, the processor 601 is further configured to, when it is detected that the flight distance of the aircraft does not reach the maximum flight distance, determine a reason that the flight distance of the aircraft does not reach the maximum flight distance, and generate the prompt information, where the prompt information includes the reason that the flight distance of the aircraft does not reach the maximum flight distance.

Further, the output device 603 is also configured to output the prompt message.

Further, the control terminal in an embodiment further includes a display device 606, which is in communication connection with the output device 603, and is configured to display one or more of the channel parameter, the power spectral density of the interference signal, and the reference distance.

It can be seen that, in the control terminal described in fig. 6, while the control terminal displays the frequency point set, the power spectral density of each frequency point in the channel bandwidth, the equivalent total interference energy value of the currently selected communication channel, the maximum flight distance of the aircraft, the reason why the flight distance does not reach the maximum flight distance, and the like can be displayed. The control terminal displays abundant interactive interfaces, so that a user can conveniently master the interference signal intensity of each frequency point and the interference signal intensity of a currently used communication channel in real time, and adjust and operate or change the communication channel with better channel quality according to the channel parameters displayed in the interactive interfaces, thereby obtaining better flight experience and improving the viscosity of the user.

It should be noted that, in the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to relevant descriptions of other embodiments for parts that are not described in detail in a certain embodiment. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.

The steps in the method of the embodiment of the application can be sequentially adjusted, combined and deleted according to actual needs.

The modules in the channel parameter display device in the embodiment of the application can be merged, divided and deleted according to actual needs.

The modules described in the embodiments of the present Application may be implemented by a general-purpose integrated circuit, such as a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC).

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.

The method, the device and the control terminal for displaying the channel parameters disclosed in the embodiments of the present application are introduced in detail, and a specific example is applied in the description to explain the principle and the implementation of the present application, and the description of the embodiments is only used to help understand the present application and its core ideas; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A method for displaying channel parameters is characterized by comprising the following steps:

determining a communication channel between the control terminal and the aircraft in the frequency point set; the method specifically comprises the following steps: receiving a signal of a selected target frequency point from the frequency point set, and determining a communication channel between the control terminal and the aircraft according to the signal;

detecting channel parameters of the communication channel and displaying the channel parameters;

wherein the detecting the channel parameter of the communication channel and displaying the channel parameter comprises:

the equivalent total interference energy value is shown.

2. The method according to claim 1, wherein before obtaining the frequency point set obtained by performing frequency point scanning according to the preset time resolution and the preset frequency resolution, the method further comprises:

and sending indication information to the aircraft.

3. The method of claim 2, wherein the indication information comprises information for indicating that the aircraft starts frequency point scanning.

4. The method of claim 2, wherein the indication information comprises information about frequency band selection.

5. The method according to claim 4, wherein the information on the selection of the frequency band comprises at least one of location information, country code and allowed use frequency band information acquired by the control terminal.

6. The method of claim 4,

the acquiring of the frequency point set obtained by scanning the frequency points according to the preset time resolution and the preset frequency resolution includes:

7. The method of claim 6, wherein determining a communication channel between the control terminal and the aircraft based on the signal comprises:

8. The method according to claim 6, wherein after obtaining the frequency point set obtained by performing frequency point scanning according to the preset time resolution and the preset frequency resolution, the method further comprises:

9. The method of claim 6, further comprising:

and displaying the power spectral density of the interference signal.

10. The method of claim 1, wherein the channel parameters further include a noise floor; the presenting the channel parameter further includes:

and displaying the background noise.

11. The method of claim 1, wherein the channel parameters further include a maximum flight distance; the detecting the channel parameters of the communication channel and displaying the channel parameters further includes:

and displaying the maximum flight distance.

12. The method of claim 1, wherein detecting the channel parameter of the communication channel and presenting the channel parameter further comprises:

13. The method according to claim 12, characterized in that the reference distance is 1km and/or 4 km.

14. The method of claim 11, further comprising:

when the fact that the flying distance of the aircraft does not reach the maximum flying distance is detected, determining the reason why the flying distance of the aircraft does not reach the maximum flying distance, and generating prompt information, wherein the prompt information comprises the reason;

and displaying the prompt information.

15. A channel parameter presentation apparatus, comprising:

the first determining module is used for determining a communication channel between the control terminal and the aircraft in the frequency point set; the first determining module includes: a receiving unit, configured to receive a signal of a target frequency point selected from the frequency point set; a first determination unit for determining a communication channel between the control terminal and the aircraft on the basis of the signal;

a display module for displaying the channel parameters;

wherein the channel parameters include an equivalent total interference energy value, and the detecting module includes:

the equivalent total interference energy value is shown.

16. The channel parameter presentation device of claim 15, further comprising:

17. The channel parameter display device according to claim 16, wherein the indication information sent by the sending module includes information for indicating that the aircraft starts frequency point scanning.

18. The apparatus of claim 16, wherein the indication information sent by the sending module comprises information about frequency band selection.

19. The apparatus of claim 18, wherein the information about the frequency band selection in the indication information sent by the sending module includes at least one of location information, country code and information about allowed frequency bands obtained by the control terminal.

20. The apparatus of claim 18,

the specific mode of the first acquisition module for acquiring the frequency point set obtained by scanning the frequency points according to the preset time resolution and the preset frequency resolution comprises the following steps:

21. The apparatus of claim 20, wherein the specific manner in which the first determining unit determines the communication channel between the control terminal and the aircraft based on the signal comprises:

22. The apparatus of claim 20, further comprising:

the second determining module is used for determining the selectable frequency point range from the frequency point set according to the position information;

23. The apparatus of claim 20, further comprising:

24. The apparatus of claim 15, wherein the channel parameters further comprise a noise floor;

and displaying the background noise.

25. The apparatus of claim 15, wherein the channel parameters further comprise a maximum flight distance;

the acquiring unit is further configured to acquire a signal-to-noise ratio threshold at the control terminal side and transmission loss in a unit distance, and acquire a maximum transmitting power allowed to be used at a current position according to position information;

and displaying the maximum flight distance.

26. The apparatus of claim 15,

27. The apparatus of claim 26,

the calculating unit is also used for calculating the transmission loss of which the reference distance is 1km and/or 4km according to the transmission loss of the unit distance;

28. The apparatus of claim 25,

the second determining module is further configured to determine, when it is detected that the flight distance of the aircraft does not reach the maximum flight distance, a reason why the flight distance of the aircraft does not reach the maximum flight distance;

the device further comprises:

the display module is also used for displaying the prompt message.

29. A control terminal, comprising:

the processor is used for determining a communication channel between the control terminal and the aircraft in the frequency point set and detecting channel parameters of the communication channel; the specific mode of the processor for determining the communication channel between the control terminal and the aircraft in the frequency point set comprises the following steps: receiving signals of a selected target frequency point from the frequency point set through the communication device, and determining a communication channel between the control terminal and the aircraft according to the signals;

output means for outputting the channel parameters;

wherein the channel parameter includes an equivalent total interference energy value, and the specific way of detecting the channel parameter of the communication channel by the processor includes:

acquiring a propagation extra loss value of the communication channel;

and outputting the equivalent total interference energy value.

30. The control terminal of claim 29, wherein the communication device is further configured to transmit an indication to the aircraft.

31. The control terminal according to claim 30, wherein the indication information sent by the communication device to the aircraft includes information for indicating that the aircraft starts frequency point scanning.

32. The control terminal of claim 30, wherein the indication sent by the communication device to the aircraft comprises information regarding frequency band selection.

33. The control terminal according to claim 32, wherein the information on the selection of the frequency band in the indication information transmitted to the aircraft by the communication means includes at least one of location information, country code, and permitted use frequency band information.

34. The control terminal of claim 32,

the specific mode of the communication device for acquiring the frequency point set obtained by scanning the frequency points according to the preset time resolution and the preset frequency resolution comprises the following steps:

35. The control terminal of claim 34, wherein the processor determines the particular manner of communication channel between the control terminal and the aircraft based on the signal comprises:

36. The control terminal of claim 34,

the processor is further configured to determine a selectable frequency point range from the frequency point set according to the position information;

37. The control terminal of claim 34,

the processor is further configured to obtain a power spectral density of an interference signal of each frequency point in the frequency point set within the channel bandwidth;

38. The control terminal of claim 29, wherein the channel parameters further include a noise floor;

and outputting the background noise.

39. The control terminal of claim 29, wherein the channel parameters further include a maximum flight distance;

the processor is further configured to obtain a signal-to-noise ratio threshold and a transmission loss of a unit distance at the control terminal, obtain a maximum transmission power allowed to be used at a current position according to position information, and determine a maximum flight distance of the aircraft when the communication channel is used for communication according to the maximum transmission power, the signal-to-noise ratio threshold, the transmission loss of the unit distance, and the equivalent total interference energy value;

and displaying the maximum flight distance.

40. The control terminal of claim 29,

the processor is further configured to obtain a signal-to-noise ratio threshold of the control terminal side and transmission loss of a unit distance, obtain maximum transmission power allowed to be used at a current position according to position information, calculate transmission loss of a reference distance according to the transmission loss of the unit distance, and determine an equivalent total interference energy value corresponding to the reference distance according to the transmission loss of the reference distance, the signal-to-noise ratio threshold, and the maximum transmission power;

41. The control terminal of claim 40,

the processor is further configured to obtain a signal-to-noise ratio threshold at the control terminal side and transmission loss of a unit distance, obtain maximum transmission power allowed to be used by the current location according to location information, calculate transmission loss of a reference distance of 1km and/or 4km according to the transmission loss of the unit distance, and determine an equivalent total interference energy value corresponding to the reference distance of 1km and/or 4km according to the transmission loss of the reference distance of 1km and/or 4km, the signal-to-noise ratio threshold, and the maximum transmission power;

42. The control terminal of claim 39,

the processor is further configured to determine a reason why the flight distance of the aircraft does not reach the maximum flight distance when it is detected that the flight distance of the aircraft does not reach the maximum flight distance, and generate prompt information, where the prompt information includes the reason;

the output device is also used for outputting the prompt message.

43. The control terminal of claim 29, further comprising a display device communicatively coupled to the output device for displaying the channel parameters.

44. The control terminal of claim 37, further comprising a display device communicatively coupled to the output device for displaying the interference signal power spectral density.

45. The control terminal of claim 40, further comprising a display device communicatively coupled to the output device for displaying the reference distance.