CN113064184A

CN113064184A - GPS interference screening method and device based on ADS-B and storage medium

Info

Publication number: CN113064184A
Application number: CN202110171032.8A
Authority: CN
Inventors: 沈仲针; 蔡建坤; 陈木泉; 王晓东
Original assignee: Guangzhou Central And Southern Civil Aviation Air Traffic Management Communication Network Technology Co ltd
Current assignee: Guangzhou Central And Southern Civil Aviation Air Traffic Management Communication Network Technology Co ltd
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2021-07-02

Abstract

The invention discloses a GPS interference screening method based on ADS-B, comprising the following steps: acquiring an original binary data file of ADS-B; formatting the original binary data file to obtain target data; and screening the GPS interference data of the target data to obtain a GPS interference data record. In addition, a GPS interference screening device and a storage medium based on ADS-B are also provided. According to the technical scheme provided by the invention, GPS interference screening of the aircraft is carried out through ADS-B-based original data so as to solve the problem of GPS interference, the screening speed and the screening efficiency of GPS interference are improved, and GPS interference data of all flights or designated flights can be quickly obtained.

Description

GPS interference screening method and device based on ADS-B and storage medium

Technical Field

The invention relates to the technical field of GPS interference screening of ADS-B, in particular to a GPS interference screening method and device based on ADS-B and a storage medium.

Background

The Broadcast Automatic Dependent-Broadcast (ADS-B) is an information system IN which an aircraft or a vehicle operating IN a flight area periodically transmits its status vector and other information, and the application functions of the on-board ADS-B are classified into two types, i.e., transmission (OUT) and reception (IN), according to the information transmission direction relative to the aircraft. ADS-B OUT refers to the aircraft transmitting its position information and other information. The airborne transmitter transmits various information of the aircraft at certain periods, including: aircraft identification Information (ID), location, altitude, speed, direction, rate of climb, and the like. OUT is the basic function of an onboard ADS-B device. The ground system monitors the air traffic condition through ADS-B OUT information sent by airborne equipment, and plays a role similar to a radar. The ADS-B IN means that the aircraft receives ADS-B OUT information sent by other aircraft or information sent by ground service equipment, and provides operation support for the unit. ADS-B IN may enable the crew to "see" the operating conditions of other aircraft on the cockpit traffic information display device (CDTI), thereby improving the air traffic situational awareness of the crew.

Referring to fig. 1, fig. 1 is a schematic diagram illustrating an aircraft obtaining position data and broadcasting self-monitoring data; the horizontal position of the aircraft transmitted by ADS-B is generally derived from a GNSS system, and the altitude is derived from a barometric altimeter. The positioning of GNSS determines the positioning of ADS-B. Since GNSS uses WGS-84 coordinate system, the expression of horizontal position in ADS-B system is based on WGS-84, which is consistent with chinese 2000 coordinate system enabled in 2008, 7, 1. At present, the positioning accuracy of the GNSS system reaches the magnitude of 10 meters, so that the positioning resolution of ADS-B also can reach the magnitude of 10 meters. Radar devices, however, have relatively low surveillance accuracy due to inherent angular resolution limitations and are unable to resolve aircraft at too close a distance. The aircraft position information adopted by the ADS-B System can theoretically come from a Flight Management System (FMS), an inertial System (INS/IRS) and a satellite navigation System (GNSS), but the current mature products and technical specifications all use the GNSS as the only position information source of the ADS-B. Therefore, GNSS is another important component of ADS-B airborne equipment. Among them, GNSS referred to herein is Global Navigation Satellite System (GNSS); WGS-84 is the World geocentric Coordinate System (World geographic System-1984 Coordinate System, WGS-84); the INS is an Inertial Navigation System (INS); IRS is an Inertial Reference System (IRS); the GPS is a Global Positioning System (GPS).

Therefore, GNSS is directly related to the positioning accuracy and credibility of ADS-B. If GNSS fails, ADS-B will not be able to provide the aircraft position. GNSS is currently essentially the GPS system used. The GPS interference can reduce the position accuracy of ADS-B positioning and influence flight safety, so that the screening of the GPS interference is very important.

Disclosure of Invention

The invention provides a GPS interference screening method and device based on ADS-B and a storage medium, aiming at solving the problem of screening GPS interference based on ADS-B in the prior art.

In order to achieve the purpose, the GPS interference screening method based on ADS-B provided by the invention comprises the following steps:

acquiring an original binary data file of ADS-B;

formatting the original binary data file to obtain target data;

searching a data record with a non-empty flight height layer field in the target data to obtain a first data record;

performing first marking on the first data record according to a GPS signal judgment result;

searching data records containing flight numbers in the first data records completing the first marking to obtain second data records, and sequencing the second data records according to ascending time sequence;

adding a first mark of the previous data record and a first mark of the next data record in each second data record according to the flight number;

judging the GPS interference time point according to the first marks of the previous data record and the next data record in each second data record, and marking the second data records according to the judgment result; the second marker comprises a second data record of a start time point of the GPS interference and a second data record of an end time point of the GPS interference;

performing data screening on the second data record according to the second mark to obtain a third data record; the third data record comprises a start data record of the second marker in the second data record as GPS interference and an end data record of GPS interference;

sorting the third data records according to the ascending order of time, and reading a timestamp field, a longitude and latitude field and a flight height layer field of the last record in each third data record;

adding a timestamp field, a longitude and latitude field and a flight altitude layer field of the previous record into the ending data record of the GPS interference;

deleting the starting data record of the GPS interference to obtain a fourth data record; the fourth data record is a GPS interference data record.

Further, the formatting the original binary data file includes:

analyzing the original binary data file according to the data format of Cat021 to obtain object data;

creating a flight object according to the object data;

and unloading the object data and the flight object data into target data.

Further, the unit of the fly height layer field is meter.

Further, the first marking the first data record according to the GPS signal determination result includes:

reading the version number vn in the first data record; the version number vn is the version of airborne equipment related to ADS-B;

when the version number vn is 0, judging whether the field value of the NUCpNIC is 0, when the field value of the NUCpNIC is 0, indicating that the GPS signal is weak, and marking a first mark C of the first data record;

when the version number vn is 1 or 2, the GPS signal is weak when the following conditions are not met, and a first mark C for marking the first data record is marked:

the value of NUCpNIC field is greater than or equal to 1, the value of NACP field is greater than or equal to 1, and the value of SIL field is greater than or equal to 1;

when the version number vn is null, judging the type of the airborne equipment of the first data record according to the field value of NUCpNIC, the field value of NACP and the field value of SIL:

when the NACp field is equal to 0 and the SIL field is equal to 0, then the onboard device type is inferred to be 260, and if the nucpoc nic field is satisfied and equal to 0, then the GPS signal is weak, marking the first flag of the first data record as C;

when the NACP field is not equal to 0 or the SIL field is not equal to 0, the type of the airborne equipment is inferred to be 260a or 260b, and if the NUCpNIC field value is not equal to or more than 1 and the NACP field value is equal to or more than 1 and the SIL field value is not equal to or more than 1 at the moment, the GPS signal is weak, and a first mark of the first data record is marked as C;

the first marks of the other first data records are marked with a.

Further, the step of determining the GPS interference time point includes:

if the first mark of the last data record in the current second data record is C, the first mark of the next data record is C and the first mark of the current second data record is A, modifying the first mark of the current second data record into C;

if the first mark of the next data record in the current second data record is C and the first mark of the current second data record is A, modifying the first mark of the current second data record into B;

if the first mark of the last data record in the current second data record is C and the first mark of the current second data record is A, modifying the first mark of the current second data record into D;

if the first mark in the current second data record is C, keeping the first mark in the current second data record unchanged;

and if the first mark in the current second data record is A, keeping the first mark in the current second data record unchanged.

Further, the adding of the first mark of the previous data record and the first mark of the next data record in each second data record according to the flight number is realized by a function in data processing.

Further, the fourth data record includes a latitude and longitude of a GPS jamming start time and a altitude of flight, and a latitude and longitude of a GPS stop time and an altitude of flight.

The invention also provides a GPS interference screening method based on ADS-B, which is used for GPS interference screening of the designated flight number, and the GPS interference screening method based on ADS-B comprises the following steps:

acquiring an original binary data file of ADS-B;

formatting the original binary data file to obtain target data;

reading aircraft data of a specified flight number in the target data;

searching a first data record with a non-empty flight level field in the designated flight data;

deleting the starting data record of the GPS interference to obtain a fourth data record; the fourth data record is a GPS interference data record of the designated flight number;

sorting the fourth data records according to the ascending order of time, and reading the earliest GPS interference starting time and the latest GPS interference ending time;

extracting all data records of the earliest GPS interference starting time minus a plurality of preset time periods to the latest GPS interference ending time plus a plurality of preset time periods as a fifth data record; the fifth data record is a data record of a flight with a designated flight number that is interfered by the GPS.

Meanwhile, the invention also provides a GPS interference screening device based on ADS-B, which comprises a memory and a processor, wherein the memory is stored with a GPS interference screening program based on ADS-B which can be operated in the processor, and the GPS interference screening program based on ADS-B realizes the steps of the GPS interference screening method based on ADS-B when being executed by the processor.

In addition, the present invention also provides a storage medium, which is a computer-readable storage medium, and the storage medium stores an ADS-B based GPS interference filtering program, and the ADS-B based GPS interference filtering program can be executed by one or more processors to implement the steps of the ADS-B based GPS interference filtering method as described above.

According to the GPS interference screening method, device and storage medium based on ADS-B, GPS interference screening of the aircraft is carried out through ADS-B-based original data so as to solve the problem of GPS interference, screening speed and screening efficiency of GPS interference are improved, and GPS interference data of all flights or designated flights can be obtained quickly.

Drawings

FIG. 1 is a schematic diagram of an aircraft obtaining position data and broadcasting self-monitoring data;

fig. 2 is a schematic flow chart of a GPS interference screening method based on ADS-B according to an embodiment of the present invention;

fig. 3 is a schematic flowchart of a formatting process performed on the original binary data file according to an embodiment of the present invention;

fig. 4 is a schematic flowchart of a process of performing a first marking on the first data record according to a GPS signal determination result according to an embodiment of the present invention;

fig. 5 is a flowchart illustrating a step of determining the GPS interference time point according to an embodiment of the present invention;

fig. 6 is a schematic flow chart of a GPS interference screening method based on ADS-B according to a second embodiment of the present invention;

fig. 7 is a schematic view of an internal structure of a GPS interference screening apparatus based on ADS-B according to a third embodiment of the present invention;

fig. 8 is a schematic diagram of a GPS interference screening program module based on ADS-B in a GPS interference screening apparatus based on ADS-B according to a third embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. 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.

Example one

Referring to fig. 2, fig. 3, fig. 4 and fig. 5, in a first embodiment of the present invention, the method for screening GPS interference based on ADS-B includes:

step S101: acquiring an original binary data file of ADS-B; the information contained in the ADS-B based raw binary data file includes four-dimensional position information (longitude, latitude, altitude, and time) of the aircraft, other additional information (e.g., collision warning information, pilot input information, track angle, airline inflection point, etc.), and identification information and category information of the aircraft. In addition, other additional information may be included, such as heading, airspeed, wind speed, wind direction, and aircraft ambient temperature. This information can be obtained by the following avionics: global Navigation Satellite Systems (GNSS), Inertial Navigation Systems (INS), Inertial Reference Systems (IRS), flight managers or other onboard sensors, etc.

Step S102: formatting the original binary data file to obtain target data; specifically, as shown in fig. 3, the formatting the original binary data file includes:

step S1021: analyzing the original binary data file according to the data format of Cat021 to obtain object data; wherein, Cat021 is the civil aviation ADS-B message Data transmission and exchange standard (Data formats analysis for European control ASTERIX Category021, Cat 021); the object data is an element data set divided by crossing cluster nodes and can participate in parallel computation; specifically, the data format of the original binary data file Cat021 is parsed into object data which can be operated by using a two-level recording method of the data processing context. Specifically, in an embodiment of the present invention, the object data is RDD data, and RDD is an abstract flexible Distributed data set (RDD), and specifically, the binary records method of Spark context is used to parse an original binary data file into object data that can be operated in Spark according to the data format of Cat021, and the object data is denoted as Cat021java RDD.

Step S1022: creating a flight object according to the object data; wherein, the flight object is assistance data, which can be understood as a data format; and creating a flight object according to the object data, namely converting a data record in the object data into a Cat021 mode object according to the Cat021 mode format. Specifically, in an embodiment of the present invention, the flight object is recorded as cat021 Schema; and creating the flight object according to the object data, namely converting a data record in the object data into a cat021Schema object according to the cat021Schema format.

Step S1023: unloading the object data and the flight object data into target data; specifically, the object data generated in step S1021 and the Cat021schema object generated in step S1022 are used to be dumped as target data. Specifically, in an embodiment of the present invention, the data cat021JavaRdd generated in step S1021 and the data cat021Schema generated in step S1022 are used to be transferred and stored as the target data.

Step S103: searching a data record with a non-empty flight height layer field in the target data to obtain a first data record; the flight level field records the flight level of the aircraft, the height value of the aircraft calculated according to the standard atmospheric pressure (1013.2 hectopascal or 76 cm mercury) is taken as the reference and the flight level field in the target data is non-empty, namely the aircraft is in a flying state, and the aircraft is in a non-flying state. By default, the units of the flight level field are hundreds of feet, and the units of the flight level field need to be converted from hundreds of feet to meters. Obtaining a first data record by searching a data record with a non-empty flight level field in the target data, wherein the first data record comprises all data of the aircraft in a flight state; specifically, in an embodiment of the present invention, the flight level field is recorded as a flightLevel field.

Step S104: performing first marking on the first data record according to a GPS signal judgment result; specifically, referring to fig. 4, the first marking the first data record according to the GPS signal determination result includes:

step S1041: reading the version number vn in the first data record; the version number vn is the version of airborne equipment related to ADS-B;

step S1042: when the version number vn is 0, judging whether the field value of the NUCpNIC is 0, when the field value of the NUCpNIC is 0, indicating that the GPS signal is weak, and marking a first mark C of the first data record; wherein, the nucpoc field value is a field value for recording the uncertainty or integrity of the aircraft position;

step S1043: when the version number vn is 1 or 2, the GPS signal is weak when the following conditions are not met, and a first mark C for marking the first data record is marked:

the value of NUCpNIC field is greater than or equal to 1, the value of NACP field is greater than or equal to 1, and the value of SIL field is greater than or equal to 1; wherein, the NACP field value refers to a position accuracy field value, and the SIL field value refers to a monitoring integrity level field value;

step S1044: when the version number vn is null, judging the type of the airborne equipment of the first data record according to the field value of NUCpNIC, the field value of NACP and the field value of SIL:

step S1045: the first marks of the other first data records are marked with a.

Step S105: searching data records containing flight numbers in the first data records completing the first marking to obtain second data records, and sequencing the second data records according to ascending time sequence;

step S106: adding a first mark of the previous data record and a first mark of the next data record in each second data record according to the flight number; specifically, the adding of the first mark of the previous data record and the first mark of the next data record in each second data record according to the flight number is realized by a function in data processing; specifically, in an embodiment of the present invention, the adding of the first flag of the previous data record and the first flag of the next data record in each second data record according to the flight number is implemented by lag and lead functions in Spark SQL data processing.

Step S107: judging the GPS interference time point according to the first marks of the previous data record and the next data record in each second data record, and marking the second data records according to the judgment result; the second indicia includes a second data record for a start time point of the GPS interference and a second data record for an end time point of the GPS interference.

Referring to fig. 5, specifically, the step of determining the GPS interference time point includes:

step S1071: if the first mark of the last data record in the current second data record is C, the first mark of the next data record is C and the first mark of the current second data record is A, modifying the first mark of the current second data record into C;

step S1072: if the first mark of the next data record in the current second data record is C and the first mark of the current second data record is A, modifying the first mark of the current second data record into B;

step S1073: if the first mark of the last data record in the current second data record is C and the first mark of the current second data record is A, modifying the first mark of the current second data record into D;

step S1074: if the first mark in the current second data record is C, keeping the first mark in the current second data record unchanged;

step S1075: and if the first mark in the current second data record is A, keeping the first mark in the current second data record unchanged.

Step S108: performing data screening on the second data record according to the second mark to obtain a third data record; the third data record comprises a start data record of the second marker in the second data record as GPS interference and an end data record of GPS interference;

step S109: sorting the third data records according to the ascending order of time, and reading a timestamp field, a longitude and latitude field and a flight height layer field of the last record in each third data record; specifically, the latitude and longitude field includes a lat field, which is a latitude (lattude) field, and a lon field, which is a longitude (lon) field.

Step S110: and adding a timestamp field, a longitude and latitude field and a flight altitude layer field of the last record into the ending data record of the GPS interference.

Step S111: deleting the starting data record of the GPS interference to obtain a fourth data record; the fourth data record is a GPS interference data record; the fourth data record includes a latitude and longitude of a GPS interference start time and a flight altitude, and a latitude and longitude of a GPS end time and a flight altitude. The fourth data record is also a data frame of GPS interference, which may be subsequently analyzed and further processed for GPS interference.

Example two

Referring to fig. 6, in a second embodiment of the present invention, a method for screening GPS interference based on ADS-B for specifying a flight number is provided, and specifically, the method for screening GPS interference based on ADS-B includes:

step S201: acquiring an original binary data file of ADS-B;

step S202: formatting the original binary data file to obtain target data;

step S203: reading aircraft data of a specified flight number in the target data;

step S204: searching a first data record with a non-empty flight level field in the designated flight data;

step S205: performing first marking on the first data record according to a GPS signal judgment result;

step S206: searching data records containing flight numbers in the first data records completing the first marking to obtain second data records, and sequencing the second data records according to ascending time sequence;

step S207: adding a first mark of the previous data record and a first mark of the next data record in each second data record according to the flight number;

step S208: judging the GPS interference time point according to the first marks of the previous data record and the next data record in each second data record, and marking the second data records according to the judgment result; the second marker comprises a second data record of a start time point of the GPS interference and a second data record of an end time point of the GPS interference;

step S209: performing data screening on the second data record according to the second mark to obtain a third data record; the third data record comprises a start data record of the second marker in the second data record as GPS interference and an end data record of GPS interference;

step S210: sorting the third data records according to the ascending order of time, and reading a timestamp field, a longitude and latitude field and a flight height layer field of the last record in each third data record;

step S211: adding a timestamp field, a longitude and latitude field and a flight altitude layer field of the previous record into the ending data record of the GPS interference;

step S212: deleting the starting data record of the GPS interference to obtain a fourth data record; the fourth data record is a GPS interference data record of the designated flight number;

step S213: sorting the fourth data records according to the ascending order of time, and reading the earliest GPS interference starting time and the latest GPS interference ending time;

step S214: extracting all data records of the earliest GPS interference starting time minus a plurality of preset time periods to the latest GPS interference ending time plus a plurality of preset time periods as a fifth data record; the fifth data record is a data record of a flight with a designated flight number that is interfered by the GPS.

Specifically, the difference between the second embodiment and the first embodiment is that the GPS interference data screening of the aircraft with the designated flight number is realized by the GPS interference screening method based on ADS-B of the second embodiment, and further the GPS interference data analysis and processing are performed on the aircraft.

EXAMPLE III

In addition, the third embodiment of the invention provides a GPS interference screening device based on ADS-B, and specifically, the GPS interference screening device based on ADS-B is a host or a server for a video conference.

Referring to fig. 7, a schematic diagram of an internal structure of a GPS interference screening apparatus based on ADS-B according to a third embodiment of the present invention is provided, where the GPS interference screening apparatus based on ADS-B at least includes a memory 11, a processor 12, a communication bus 13, and a network interface 14.

The memory 11 includes at least one type of readable storage medium, which includes a flash memory, a hard disk, a multimedia card, a card type memory (e.g., SD or DX memory, etc.), a magnetic memory, a magnetic disk, an optical disk, and the like. The memory 11 may be an internal storage unit of the ADS-B based GPS interference screening device in some embodiments, such as a hard disk of the ADS-B based GPS interference screening device. The memory 11 may also be an external storage device of the ADS-B based GPS jamming screening apparatus in other embodiments, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the ADS-B based GPS jamming screening apparatus. Further, the memory 11 may also include both an internal storage unit and an external storage device of the ADS-B based GPS interference screening apparatus. The memory 11 may be used not only to store application software installed in the ADS-B based GPS interference filtering apparatus and various types of data, such as codes of the ADS-B based GPS interference filtering program, etc., but also to temporarily store data that has been output or will be output.

Processor 12, which in some embodiments may be a Central Processing Unit (CPU), controller, microcontroller, microprocessor or other data Processing chip, executes program code or processes data stored in memory 11, such as executing an ADS-B based GPS interference filter, etc.

The communication bus 13 is used to realize connection communication between these components.

The network interface 14 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface), and is generally used to establish a communication connection between the ADS-B based GPS interference screening apparatus and other electronic devices.

Optionally, the ADS-B based GPS interference screening apparatus may further include a user interface, the user interface may include a Display (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface may further include a standard wired interface and a wireless interface. Alternatively, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, or the like. The display, which may also be referred to as a display screen or display unit, is suitable for displaying information processed in the ADS-B based GPS interference screening apparatus and for displaying a visual user interface.

While fig. 7 only shows the ADS-B based GPS interference screening device with the components 11-14 and the ADS-B based GPS interference screening program, those skilled in the art will appreciate that the configuration shown in fig. 7 does not constitute a limitation of the ADS-B based GPS interference screening device, and may include fewer or more components than shown, or some components in combination, or a different arrangement of components.

In the embodiment of the GPS interference screening apparatus based on ADS-B shown in fig. 7, a GPS interference screening program based on ADS-B is stored in the memory 11; the processor 12 implements the following steps when executing the ADS-B based GPS interference filter program stored in the memory 11:

step S101: acquiring an original binary data file of ADS-B;

step S102: formatting the original binary data file to obtain target data;

step S103: searching a data record with a non-empty flight height layer field in the target data to obtain a first data record;

step S104: performing first marking on the first data record according to a GPS signal judgment result;

step S106: adding a first mark of the previous data record and a first mark of the next data record in each second data record according to the flight number;

step S107: judging the GPS interference time point according to the first marks of the previous data record and the next data record in each second data record, and marking the second data records according to the judgment result; the second marker comprises a second data record of a start time point of the GPS interference and a second data record of an end time point of the GPS interference;

step S109: sorting the third data records according to the ascending order of time, and reading a timestamp field, a longitude and latitude field and a flight height layer field of the last record in each third data record;

step S110: adding a timestamp field, a longitude and latitude field and a flight altitude layer field of the previous record into the ending data record of the GPS interference;

step S111: deleting the starting data record of the GPS interference to obtain a fourth data record; the fourth data record is a GPS interference data record.

Or the following steps are realized:

step S201: acquiring an original binary data file of ADS-B;

step S202: formatting the original binary data file to obtain target data;

Referring to fig. 8, a schematic diagram of a program module of an ADS-B based GPS interference filtering program in a third embodiment of the ADS-B based GPS interference filtering apparatus according to the present invention is shown, in the third embodiment, the ADS-B based GPS interference filtering program may be divided into an obtaining module 10, a formatting module 20, and a filtering module 30, exemplarily:

the acquisition module 10 is used for executing the task of the original binary data file of ADS-B;

a formatting module 20, configured to perform a task of formatting the original binary data file;

and the screening module 30 is used for executing the task of screening the GPS interference data.

The functions or operation steps of the program modules such as the obtaining module 10, the formatting module 20, and the filtering module 30 when executed are substantially the same as those of the above embodiments, and are not described herein again.

Furthermore, a third embodiment of the present invention further provides a storage medium, where the storage medium is a computer-readable storage medium, and the storage medium stores an ADS-B based GPS interference filtering program, where the ADS-B based GPS interference filtering program is executable by one or more processors to implement the following operations:

step S101: acquiring an original binary data file of ADS-B;

step S102: formatting the original binary data file to obtain target data;

Or the following steps are realized:

step S201: acquiring an original binary data file of ADS-B;

step S202: formatting the original binary data file to obtain target data;

The storage medium of the present invention is substantially the same as the embodiments of the GPS interference filtering method and apparatus based on ADS-B, and will not be described herein again.

Compared with the prior art, the GPS interference screening method, the device and the storage medium based on ADS-B provided by the invention have the advantages that the conference video stream is segmented and transcoded, the conference terminal screen index library is used for pushing the connected conference video segment to the appointed conference terminal screen, the situations that the formats of the video conference are not uniform and the video formats supported by the conference terminal screens are not uniform are avoided, the requirement on the conference terminal screens added into the video conference is low, the conference terminal screens can be directly played in a plurality of screens, and the use is convenient.

It should be noted that the above-mentioned numbers of the embodiments of the present invention are merely for description, and do not represent the merits of the embodiments. And the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, apparatus, article, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, apparatus, article, or method. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, apparatus, article, or method that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above, and includes instructions for enabling a terminal device (e.g., a drone, a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A GPS interference screening method based on ADS-B is characterized by comprising the following steps:

acquiring an original binary data file of ADS-B;

formatting the original binary data file to obtain target data;

2. The ADS-B based GPS interference screening method of claim 1, wherein the formatting the raw binary data file comprises:

creating a flight object according to the object data;

and unloading the object data and the flight object data into target data.

3. The ADS-B based GPS interference screening method of claim 1, wherein the fly height layer field is in meters.

4. The ADS-B based GPS interference screening method of claim 1, wherein the first marking the first data record according to a GPS signal determination result comprises:

the first marks of the other first data records are marked with a.

5. The ADS-B based GPS interference screening method of claim 4, wherein the GPS interference time point determining step comprises:

6. The ADS-B based GPS interference screening method of claim 1, wherein the adding of the first flag of the previous data record and the first flag of the next data record in each second data record according to flight number is implemented by a function in data processing.

7. The ADS-B based GPS interference screening method of claim 1, wherein the fourth data record includes a latitude and longitude of a GPS interference start time and a flight altitude and a latitude and longitude of a GPS end time and a flight altitude.

8. A GPS interference screening method based on ADS-B is characterized by comprising the following steps:

acquiring an original binary data file of ADS-B;

formatting the original binary data file to obtain target data;

reading aircraft data of a specified flight number in the target data;

9. An ADS-B based GPS interference screening apparatus, comprising a memory and a processor, wherein the memory stores an ADS-B based GPS interference screening program executable on the processor, and the ADS-B based GPS interference screening program, when executed by the processor, implements the steps of the ADS-B based GPS interference screening method according to any one of claims 1 to 8.

10. A storage medium, wherein the storage medium is a computer-readable storage medium, and wherein the storage medium has stored thereon an ADS-B based GPS interference filtering program, which is executable by one or more processors to implement the steps of the ADS-B based GPS interference filtering method according to any one of claims 1 to 8.