CN108318869B - Radar data simulation system and method - Google Patents
Radar data simulation system and method Download PDFInfo
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- CN108318869B CN108318869B CN201810048367.9A CN201810048367A CN108318869B CN 108318869 B CN108318869 B CN 108318869B CN 201810048367 A CN201810048367 A CN 201810048367A CN 108318869 B CN108318869 B CN 108318869B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
Abstract
The invention belongs to the technical field of radar design, and discloses a radar data simulation system and a method, which comprises the following steps: the system comprises a network switch, a signal processor, a data processor, a servo processor, a radar terminal and radar data simulation equipment, wherein the signal processor, the data processor, the servo processor, the radar terminal and the radar data simulation equipment are respectively connected with the network switch; the technical scheme of the invention can completely collect and store the effective data required by the radar according to the corresponding time sequence and data source by monitoring the data interaction in the network and screening and filtering; the radar can well reflect the current working state of the radar according to the time sequence relation and the receiving and sending data flow relation during working strictly; the scene of the radar during working can be collected, real data can be sent out in a simulated mode through establishing a virtual sender and a strict time sequence relation, and functions of each device of the radar can be well detected; by adopting the technical scheme of the invention, the whole working process of the radar can be well analyzed, rather than only extracting and analyzing the radar data.
Description
Technical Field
The invention belongs to the technical field of radar design, and particularly relates to a radar data simulation system and method, which are suitable for the recording, playback and extraction requirements of all radar data.
Background
The method for realizing radar data simulation at present adopts simulated route information and one-time trace information in radar terminal equipment, and needs to operate, playback and extract data in the radar terminal equipment when analyzing measured data, and has the following defects that firstly, because the adopted simulated data has a great difference with actual data, the surrounding environment cannot be restored, and particularly, when a target maneuvers, the current scene cannot be recovered; secondly, the method can only extract data for analysis, and cannot reinject actual data to each device of the radar according to a time sequence relation and a data flow relation of a sender and a receiver.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a system and a method for simulating radar data, which can well reflect the current working state of the radar according to the time sequence relationship and the data stream relationship during radar operation.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme.
The first technical scheme is as follows:
a radar data simulation system, the radar data simulation system comprising: the system comprises a network switch, a signal processor, a data processor, a servo processor, a radar terminal and radar data simulation equipment, wherein the signal processor, the data processor, the servo processor, the radar terminal and the radar data simulation equipment are respectively connected with the network switch;
wherein, signal processor passes through the network switch with radar terminal both-way communication connects, signal processor passes through the network switch with data processor one-way communication connects, data processor passes through the network switch with radar terminal both-way communication connects, servo processor passes through the network switch with signal processor the data processor one-way communication connects, radar data analog equipment passes through the network switch with radar terminal both-way communication connects, radar data analog equipment passes through the network switch with signal processor the data processor the servo processor one-way communication connects.
The first technical scheme of the invention has the characteristics and further improvements that:
(1) the radar terminal is used for sending signal processing control parameters to the signal processor through a network switch, sending data processing control parameters to the data processor and sending servo control parameters to the servo processor; the signal processing control parameters include at least: radar frequency modulation mode, radar signal frequency, moving target detection switch, constant false alarm threshold, clutter map threshold, radar silence control parameter and radar signal pulse repetition period; the data processing control parameters at least comprise: the method comprises the following steps of (1) carrying out track keeping parameters, clutter map switches and three-point navigation establishing parameters; the servo control parameters at least comprise: radar rotation speed and servo regulation parameters;
the servo processor is used for obtaining an angle coding value according to the third control parameter and respectively sending the angle coding value to the radar terminal, the signal processor and the data processor through the network switch;
the radar terminal is used for displaying a code disc value according to the angle coding value;
the signal processor is used for obtaining radar primary trace data according to the first control parameter and the angle coding value and respectively sending the radar primary trace data to a radar terminal and the data processor through a network switch;
the data processor is used for obtaining radar track data according to the second control parameter, the angle coding value and the radar primary trace data and sending the radar track data to a radar terminal through a network switch;
the radar terminal is also used for displaying the radar primary trace data sent by the signal processor and the radar track data sent by the data processor;
the radar terminal is further used for sending a radar data acquisition instruction and a radar data simulation instruction to the radar data simulation equipment; the radar data acquisition instruction comprises a radar data acquisition starting instruction and a radar data acquisition ending instruction, and the radar data simulation instruction comprises a radar data starting simulation instruction and a radar data ending simulation instruction;
the radar data simulation equipment is used for acquiring a network data packet on a network switch according to the radar data start acquisition instruction and acquiring a record file according to the network data packet;
the radar data simulation equipment is further used for obtaining a corresponding record file according to the radar data start simulation instruction and carrying out radar data simulation.
(2) The recording file takes the current time of a radar data simulation system as a file name when the recording file is created, and the data recorded in the recording file comprises a frame header and frame contents;
wherein the frame header comprises: the method comprises the steps of obtaining a current time mark, a data sender IP address, a data sender port, a data receiver IP address, a data receiver port, a data length and a data type; the current time scale is the time when the radar data simulation equipment acquires a network data packet on a network switch, the data types comprise five types, primary trace point data sent to the data processor and the radar terminal by the signal processor is a first data type, track data sent to the radar terminal by the data processor is a second data type, an angle coding value sent to the radar terminal by the servo processor is a third data type, an angle coding value sent to the signal processor and the data processor by the servo processor is a fourth data type, and a signal processing control parameter sent to the signal processor, a data processing control parameter sent to the data processor and a servo control parameter sent to the servo processor by the radar terminal are a fifth data type.
(3) The frame content is the text of the network data packet and comprises the following data transmitted on a network switch:
the signal processor sends primary trace point data to the radar terminal and the data processor; the data processor sends track data to the radar terminal; the servo processor sends an angle coding value to the radar terminal; the servo processor sends the angle coding values to the signal processor and the data processor; the radar terminal sends the signal processing control parameters to the signal processor, the data processing control parameters to the data processor and the servo control parameters to the servo processor.
(4) The radar data simulation equipment is also used for acquiring a corresponding record file according to the radar data start simulation instruction and carrying out radar data simulation;
the radar data simulation starting instruction at least comprises file name information of a recording file where the radar data to be simulated are located and the data type of the radar data to be simulated;
the radar data simulation equipment reads the frame header and the frame content in the corresponding recording file according to the file name information of the recording file in which the radar data to be simulated is located;
when the data type of the radar data to be simulated is a first data type, the radar data simulation equipment sends primary trace data of which the data type is the first data type in the network data packet to the signal processor and the radar terminal;
when the data type of the radar data to be simulated is a second data type, the radar data simulation equipment sends track data of which the data type is the second data type in the network data packet to a radar terminal;
when the data type of the radar data to be simulated is a third data type, the radar simulation equipment sends an angle coding value of which the data type is the third data type in the network data packet to a radar terminal;
when the data type of the radar data to be simulated is a fourth data type, the radar simulation equipment sends an angle coding value of which the data type is the fourth data type in the network data packet to the signal processor and the data processor;
and when the data type of the radar data to be simulated is a fifth data type, the radar simulation equipment correspondingly sends the control parameter of which the data type is the fifth data type in the network data packet to the signal processor, the data processor and the servo processor.
(5) When the radar simulation device sends data in the network data packet, a corresponding virtual sender IP address and a corresponding virtual sender port are also required to be created according to the sender IP address and the sender port.
The second technical scheme is as follows:
a radar data simulation method, which is applied to the radar data simulation system according to the first technical aspect, the radar data simulation method comprising:
the radar terminal sends a radar data starting simulation instruction to the radar data simulation equipment;
the radar data simulation equipment acquires a network data packet on a network switch according to the radar data start acquisition instruction, and obtains a recording file taking the current time of the radar data simulation system as a file name according to the network data packet; the data recorded in the recording file comprises a frame header and frame contents; wherein the frame header comprises: the method comprises the steps of obtaining a current time mark, a data sender IP address, a data sender port, a data receiver IP address, a data receiver port, a data length and a data type; the current time scale is the time of acquiring a network data packet on a network switch by radar data simulation equipment, the data types comprise five types, primary trace point data sent to a data processor and a radar terminal by the signal processor is a first data type, track data sent to the radar terminal by the data processor is a second data type, an angle coding value sent to the radar terminal by a servo processor is a third data type, an angle coding value sent to the signal processor and the data processor by the servo processor is a fourth data type, a signal processing control parameter sent to the signal processor by the radar terminal, a data processing control parameter sent to the data processor and a servo control parameter sent to the servo processor are fifth data types; the frame content is the text of the network data packet and comprises the following data transmitted on a network switch: the signal processor sends primary trace point data to the radar terminal and the data processor; the data processor sends track data to the radar terminal; the servo processor sends an angle coding value to the radar terminal; the servo processor sends the angle coding values to the signal processor and the data processor; the radar terminal sends a signal processing control parameter to the signal processor, a data processing control parameter to the data processor and a servo control parameter to the servo processor;
the radar terminal sends a radar data acquisition ending instruction to the radar data simulation equipment;
the radar data simulation equipment finishes the radar data acquisition process according to the radar data acquisition finishing instruction;
the radar terminal sends the data to the radar data simulation equipment; a radar data start simulation command;
the radar data simulation equipment starts to simulate the instruction according to the radar data to obtain a corresponding record file, and radar data simulation is carried out; the radar data starting simulation instruction at least comprises file name information of a recording file where the radar data to be simulated are located and the data type of the radar data to be simulated;
the radar data simulation equipment reads a frame header and frame contents in a corresponding recording file according to file name information of the recording file in which the radar data to be simulated is located;
when the data type of the radar data to be simulated is a first data type, the radar data simulation equipment sends primary trace data of which the data type is the first data type in the network data packet to the signal processor and the radar terminal;
when the data type of the radar data to be simulated is a second data type, the radar data simulation equipment sends track data of which the data type is the second data type in the network data packet to a radar terminal;
when the data type of the radar data to be simulated is a third data type, the radar simulation equipment sends an angle coding value of which the data type is the third data type in the network data packet to a radar terminal;
when the data type of the radar data to be simulated is a fourth data type, the radar simulation equipment sends an angle coding value of which the data type is the fourth data type in the network data packet to the signal processor and the data processor;
and when the data type of the radar data to be simulated is a fifth data type, the radar simulation equipment correspondingly sends the control parameter of which the data type is the fifth data type in the network data packet to the signal processor, the data processor and the servo processor.
The technical scheme of the invention can completely collect and store the effective data required by the radar according to the corresponding time sequence and data source by monitoring the data interaction in the network and screening and filtering; the radar can well reflect the current working state of the radar according to the time sequence relation and the receiving and sending data flow relation during working strictly; the method can collect scenes of the radar during working, simulate and send real data by establishing a virtual sender and a strict time sequence relation, and well detect the functions of various devices (a radar terminal, a data processor, a signal processor and a servo processor) of the radar; the technical scheme of the invention can be used for transmitting the collected target aircraft flying and external interference data scenes to a receiver strictly according to the time sequence relation and the receiving and transmitting data flow relation during working, detecting the performance of each device of the radar and optimizing the functions of each device of the radar; by adopting the technical scheme of the invention, the whole working process of the radar can be well analyzed, rather than only extracting and analyzing the radar data. The technical scheme of the invention only needs to add a data simulation device (a computer or a server) to the original radar system to be connected with the switch, and the invention is simple, efficient and practical!
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a radar data simulation system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a radar data simulation system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a record file format according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of a radar data simulation method according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 technical scheme of the invention is realized on a Windows operating system platform.
The invention provides a radar data simulation system, which is explained according to the attached figure 1 and comprises data sending equipment, data receiving equipment, data simulation equipment and an Ethernet switch.
The data sending equipment refers to equipment for sending data in the radar system, the data sending equipment sends the data to the switch through the network and then to the data receiving equipment through the network, and the data sending equipment comprises one or more sending equipment; the data receiving equipment is equipment for receiving data in the radar system, the data receiving equipment acquires the data transmitted from the data transmitting equipment through the switch, and the data receiving equipment comprises one or more receiving equipment; the data simulation device is a computer or server.
The data simulation equipment has the functions; and after receiving a data simulation instruction sent by the radar terminal through the network, simulating data sending equipment, reading the recorded file data, recombining the data, sending the data to the switch, and reaching the data receiving equipment through the switch.
The Ethernet exchanger is a network device based on Ethernet data transmission, can connect many pairs of ports at the same time, so that each pair of intercommunicating hosts can monopolize communication media to transmit data without conflict, and the exchanger is connected with radar data simulation equipment, data transmitting equipment and data receiving equipment through a network.
The data flow of the present invention is described with reference to fig. 2, and the system includes data interaction among a radar terminal, a signal processor, a data processor and a servo processor. The antenna, transmitter, receiver and frequency synthesizer (for providing various signals required by the whole system of radar, it provides high-purity reference signal for radar system, provides it for transmitter to transmit excitation, provides it for signal processor to provide time reference and provides it for receiver to provide local oscillator signal) in radar are not explained in detail.
The radar terminal is a computer and is used for controlling parameters of the radar signal processor, the data processor and the servo processor, controlling the radar data simulation equipment to carry out data acquisition and data simulation, receiving radar primary trace information sent by the signal processor for display, receiving radar track information sent by the data processor for display, and receiving an angle coding value sent by the servo processor for displaying a code disc value.
The radar terminal sends parameters such as a frequency hopping mode, frequency, a moving target detection switch, a constant false alarm threshold, radar silence control, pulse repetition period control and the like to the signal processor through the operation of an operator on a terminal interface, and once triggering is sent every time according to a sending protocol.
The radar terminal sends parameters such as track keeping, clutter map switching, two-point navigation and the like to the data processor through the operation of an operator on a terminal interface, and sends the parameters once by sending a single trigger and sending the parameters once according to a sending protocol.
The radar terminal sends parameters such as radar rotating speed, servo adjustment and the like to the servo processor through the operation of an operator on a terminal interface, and sends a trigger once every time and sends the trigger once according to a sending protocol.
The radar terminal sends parameters such as a data acquisition command and a data simulation command to the radar data simulation equipment through the operation of an operator on a terminal interface, and the parameters are sent once by triggering once every time and sending once according to a sending protocol.
When the radar terminal executes the function of controlling the parameters of the radar signal processor, the data processor and the servo processor, the radar terminal is a data sending device, when the radar terminal executes the function of displaying the radar primary trace information sent by the signal receiving processor, receiving the radar trace information sent by the data processor for displaying, and receiving the coded information sent by the servo processor for displaying the coded disc value, the radar terminal is a data receiving device.
The Signal processor is a device special for Processing Digital signals, can be a computer or a hardware device built by a DSP chip (Digital Signal Processing chip) and an FPGA chip (Field-Programmable Gate Array), and when the Signal processor is used as a data sending device, sends the radar primary trace data processed by the Signal processor to the data processor through a network, sends the radar primary trace data to a radar terminal through the network for display, and immediately reports the radar primary trace data after the Signal processor detects that primary trace information exists; when the servo processor is used as a data receiving device, the signal processor receives control parameter information of the radar terminal, the control signal detects a corresponding program, and receives an angle coding value of the servo processor, and the coding value corresponds to a detection signal.
The data processor is a computer specially used for processing primary trace point information of the radar, the received primary trace point information is processed into radar trace data, when the data processor is used as data sending equipment, the data processor sends the radar trace information to the radar terminal computer through a network, the radar trace information is reported after the data processing is finished, when the data processor is used as data receiving equipment, the data processor receives the primary radar trace point information reported by the signal processor through the network, the target navigation building processing is carried out, the angle coding value reported by the servo processing computer is received through the network and is used for corresponding processing with a target, and the data processing parameter information controlled by the radar terminal is received through the network and is used for radar trace processing.
The servo processor mainly generates hardware equipment of radar servo corner and rotating speed information, can be hardware equipment built for a computer or a DSP chip (Digital Signal Processing chip) and is used as data sending equipment, the servo processor sends radar angle information to a radar terminal, a data processor and a Signal processor through a network, the radar angle information is sent at regular time and in a period of 1ms, meanwhile, the servo processor is used as data receiving equipment, receives servo control parameters sent by the radar terminal through the network and controls the servo rotating speed.
The radar terminal is connected with the signal processor in a two-way mode, the radar terminal sends signal processing control parameters to the signal processor through a network, and the signal processor sends radar primary trace information to the radar terminal through the network.
The signal processor is connected with the data processor in a one-way mode, and the signal processor sends radar primary trace point information to the data processor through a network.
The radar terminal is connected with the data processor in a two-way mode, the radar terminal sends data processing control parameters to the data processor through a network, and the data processor sends radar track data to the radar terminal through the network.
The radar terminal is connected with the servo processor in a two-way mode, the radar terminal sends servo control parameters to the servo processor through a network, and the servo processor sends angle coding values to the radar terminal through the network.
The servo processor is connected with the signal processor in a one-way mode, and the servo processor sends the angle coding value to the signal processor through a network.
The servo processor is connected with the data processor in a one-way mode, and the servo processor sends the angle coding value to the data processor through a network.
The system requires that the communication interfaces of the transmitting device, the receiving device and the data simulation device are connected to the switch through a network, namely, the data interaction among the radar terminal, the signal processor, the data processor and the servo processor is through a network port and is connected to the network switch through a network cable, and the network IP address is required to be in a network segment, wherein the same network segment refers to the IP address and the subnet mask code phase to obtain the same network address. For example, 192.168.1.2 and 192.168.1.20 are the same network address, and 192.168.1.2 and 192.168.2.10 are not the same network segment. The invention sets IP of data processor as 192.168.100.2, receiving port as 2002, sending port as 3002; the signal processor IP is 192.168.100.3, the receiving port is 2003, and the sending port is 3003; the IP of the radar terminal is 192.168.100.4, the receiving port is 2004 and the sending port is 3004; the server processor IP is 192.168.100.5, the receiving port is 2005, and the transmitting port is 3005.
Network communication among the radar terminal, the signal processor, the data processor and the servo processor adopts a User Datagram Protocol (UDP); the Open System Interconnection UDP is a connectionless transport layer protocol for processing packets in the Open System Interconnection (OSI) reference model, which is the transport layer at the fourth layer in the OSI model. For example, when the signal processor transmits the radar primary trace information to the data processor and the radar terminal, the IP is 192.168.100.3, the transmitting port is 3003, the radar primary trace information is transmitted to the data processor IP address 192.168.100.2 and the receiving port is 2002, and the radar primary trace information is transmitted to the radar terminal IP address 192.168.100.4 and the receiving port is 2004.
The recording format of the radar data simulation device is explained according to fig. 3, where the recording data includes a frame header and frame contents, and the frame header includes a current time stamp, an IP address of a data sender, a port of the data sender, an IP address of a receiver, a receiving port, a data length, and a data type.
The current time scale is the accurate time received by the radar simulation equipment and comprises time, minute, second and millisecond information, and the time scale is obtained by reading the computer time of the radar data simulation equipment after the radar data simulation equipment receives data. The data sender IP address is the IP address of the data sending device, and the sender port is the sending port of the data sending device. The data receiver IP address is the IP address of the data receiving device, and the receiver port is the receiving port of the data receiving device. The data length is a byte length of transmission data. The IP address of the data sender, the IP address of the sender port, the IP address of the receiver, the IP address of the receiving port and the data length are obtained from a data packet received by the network card.
The data types are divided into a first trace point data which is sent to the data processor and the radar terminal by the signal processor and is used as a data type 1, a trace point data which is sent to the radar terminal by the data processor and is used as a data type 2, a data which is sent to the radar terminal by the servo processor and is used as a data type 3, an angle coding value of the signal processor and the data processor is used as a type 4, and control parameter information which is sent to the data processor, the signal processor and the servo processor by the radar terminal and is used as a type 5.
The frame content is a network data packet body and comprises various data received by the radar, including primary trace data sent to the data processor and the radar terminal by the signal processor, track data sent to the radar terminal by the data processor and angle coding values sent to the radar terminal, the signal processor and the data processor by the servo processor, and control parameter information sent to the data processor, the signal processor and the servo processor by the radar terminal.
According to the attached figure 4, the radar data simulation realization method flow based on the record file is further explained, firstly, a radar operator operates a radar terminal, the radar terminal sends a radar data acquisition command to a radar data simulation device once, after the radar data simulation device receives a radar data acquisition command sent by the radar terminal, the radar data simulation device firstly creates a data file taking the current time (including year, month, day, hour, minute and second milliseconds) of the system as a file name on the hardware of the radar data simulation device, starts to monitor the data of all sending devices on a switch, monitors the data to carry out IP address screening, for example, only selects the sending address and the receiving IP address as 192.168.100.2, 192.168.100.3 and 192.168.100.4 data, and does not process and store other data.
When radar data information is monitored by the radar data simulation equipment from the Ethernet switch, recording according to a data format required by the attached figure 3, and sequentially recording a current time scale, a data sender IP address, a sender port, a receiver IP address, a receiving port, data length, a data type and a network data packet text.
And when the radar data simulation equipment receives an end data acquisition command sent by the radar terminal, the radar data simulation equipment stops acquiring data on the Ethernet switch, and the record file is stored.
Network monitoring is a management tool for monitoring network state, data flow and information transmission on network, the monitoring technique is a wiretapping technique, when information is transmitted in the network, the tool can be used to set network receiving into monitoring mode, so that the information being transmitted in the network can be intercepted or captured.
The radar data simulation process is described with reference to fig. 4, when the radar data simulation device performs radar data simulation, it must receive a data simulation command and simulation file name information sent by a radar terminal, and a data type to be simulated. The radar simulation command comprises a data simulation command of the radar data simulation equipment and a data simulation stopping command of the radar data simulation equipment. The simulated file name refers to a saved data file name with the current time of the system (including year, month, day, hour, minute and second millimeters) as the file name.
The data type selection needing simulation comprises primary trace point data sent to the data processor and the radar terminal by the signal processor, track data sent to the radar terminal by the data processor and angle coding values sent to the radar terminal, the signal processor and the data processor by the servo processor, and control parameter information sent to the data processor, the signal processor and the servo processor by the radar terminal. When the radar data simulation equipment receives a radar data simulation command, a simulation file name and a data type to be simulated, opening the data file to be simulated, starting to read a file header (frame header), extracting and recording a time mark, a sender IP address, a sender port, a receiver IP address, a receiver port and a data packet text, wherein the data packet text comprises primary trace data sent to a data processor and a radar terminal by a signal processor, track data sent to the radar terminal by the data processor and angle coding values sent to the radar terminal, the signal processor and the data processor by a servo processor, and control parameter information sent to the data processor, the signal processor and the servo processor by the radar terminal. And selecting a data packet text according to the data type to be simulated, which is received by the radar data simulation equipment and sent by the radar terminal.
When the data type 1 is selected on the interface of the radar terminal, the radar data simulation equipment judges that the data is the type 1 according to the data type in the stored data when reading the data of the record file, namely, the one-time trace point data sent to the data processor and the radar terminal by the signal processor is simulated and sent to the data processor and the radar terminal, but not the data of the type 1 is not sent; when the data type 2 is selected on the radar terminal interface, the radar data simulation equipment judges that the data is transmitted when the data is the type 2 according to the data type in the stored data when reading the record file data, namely, the track data transmitted to the radar terminal by the data processor is simulated and transmitted to the data processor and the radar terminal, and the data which is not the type 2 is not transmitted; when the data type 3 is selected on the radar terminal interface, the radar data simulation equipment judges that the data is transmitted when the data is the type 3 according to the data type in the stored data when reading the data of the record file, namely, the servo processor is transmitted to the radar terminal for data simulation transmission, and the data which is not the type 3 is not transmitted; when the data type 4 is selected on the radar terminal interface, the radar data simulation equipment judges that the data is transmitted when the data is the type 4 according to the data type in the stored data when reading the data of the record file, namely, the angle coding values of the signal processor and the data processor are simulated to be transmitted, but the data which is not the type 4 is not transmitted; when the data type 5 is selected on the interface of the radar terminal, the radar data simulation equipment judges whether the data type is 5 or not according to the data type in the stored data when reading the data of the record file, namely, the radar terminal is sent to the data processor, the signal processor and the servo processor to simulate and send the control parameter information, but not the data of the type 5.
And creating a virtual IP address and a port according to the extracted IP address and port of the sender, setting the virtual IP address as the IP address of the sender, and setting the virtual IP port as the port of the sender. A general IP address is one that is bound to a physical network card, whereas a virtual IP address is one that is not bound to an actual network card. The virtual IP is an IP that is not allocated to a real host, that is, a host that provides a server to the outside has a virtual IP in addition to a real IP, and can be connected to the host using either IP. ARP is an address resolution protocol that functions simply to translate an IP address into a MAC address and then to the transport layer. Each host has an ARP cache for storing the corresponding relation between IP addresses and MAC addresses in the same network, and when the host in the Ethernet sends data, the host will first inquire the MAC address corresponding to the target IP from the cache and send the data to the MAC address. The operating system will automatically maintain this cache. The process of automatic virtual IP handoff can be implemented by Keepalived. Keepalive is a highly available scheme for LVS (load balancer) service implemented based on VRRP (Virtual Router Redundancy Protocol), and can be used to avoid single point of failure. And the radar data simulation equipment establishes a virtual IP and a port and then sends a data packet text to the receiver IP and the receiver port, wherein the receiver IP and the receiver port are obtained by reading the data record file.
For example, the radar data simulation equipment can simulate the IP address 192.168.100.3 and the sending port 3003 of the signal processor and send radar primary trace information to the data processor and the radar terminal; the radar data simulation equipment can simulate the IP address 192.168.100.2 and the sending port 3002 of the data processor and send radar track data to the radar terminal; the radar data simulation equipment can simulate the IP address 192.168.100.5 and the sending port 3005 of the servo processor and send angle coding value information to the data processor, the signal processor and the radar terminal; the radar data simulation equipment simulates the IP address 192.168.100.4 and the sending port 3004 of the radar terminal and sends radar control parameter information to the data processor, the signal processor and the servo processor.
The condition that the sending process of the radar data simulation equipment after the read data file is read ends is that the radar data simulation equipment receives a simulation stopping command from a radar terminal or that the radar data simulation equipment already reads the file to the tail of the file.
The invention provides a radar data simulation system and method based on a record file, which can completely collect and store effective data required by a radar according to corresponding time sequence and data source by monitoring data interaction in a network and screening and filtering; the radar can well reflect the current working state of the radar according to the time sequence relation and the receiving and sending data flow relation during working strictly; the method can collect the scenes of the radar during working, simulate and send real data by establishing a virtual sender and a strict time sequence relation, and well detect the functions of each device (a radar terminal, a data processor, a signal processor and a servo processor) of the radar; particularly, under the scenes of target aircraft flight and external interference data, the method cannot be realized by using a common route simulation method, can be used for transmitting the collected data to a receiving party strictly according to the time sequence relation and the receiving and transmitting data flow relation during working under the scene of the target aircraft flight and the external interference data, detecting the performance of each device of the radar and optimizing the function of each device of the radar; the method can be used for well analyzing the whole working process of the radar instead of extracting and analyzing the radar data. The method only needs to add a data simulation device (computer or server) to the original radar system to be connected with the switch, and is simple, efficient and practical!
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. A radar data simulation system, comprising: the system comprises a network switch, a signal processor, a data processor, a servo processor, a radar terminal and radar data simulation equipment, wherein the signal processor, the data processor, the servo processor, the radar terminal and the radar data simulation equipment are respectively connected with the network switch;
the signal processor is in bidirectional communication connection with the radar terminal through the network switch, the signal processor is in unidirectional communication connection with the data processor through the network switch, the data processor is in bidirectional communication connection with the radar terminal through the network switch, the servo processor is in unidirectional communication connection with the signal processor and the data processor through the network switch, the radar data simulation equipment is in bidirectional communication connection with the radar terminal through the network switch, and the radar data simulation equipment is in unidirectional communication connection with the signal processor, the data processor and the servo processor through the network switch;
the radar terminal is used for respectively sending signal processing control parameters to the signal processor through a network switch, recording the signal processing control parameters as first control parameters, sending data processing control parameters to the data processor, recording the data processing control parameters as second control parameters, sending servo control parameters to the servo processor, and recording the servo control parameters as third control parameters; the signal processing control parameters include at least: radar frequency modulation mode, radar signal frequency, moving target detection switch, constant false alarm threshold, clutter map threshold, radar silence control parameter and radar signal pulse repetition period; the data processing control parameters at least comprise: the method comprises the following steps of (1) carrying out track keeping parameters, clutter map switches and three-point navigation establishing parameters; the servo control parameters at least comprise: radar rotation speed and servo regulation parameters;
the servo processor is used for obtaining an angle coding value according to the third control parameter and respectively sending the angle coding value to the radar terminal, the signal processor and the data processor through the network switch;
the radar terminal is used for displaying a code disc value according to the angle coding value;
the signal processor is used for obtaining radar primary trace data according to the first control parameter and the angle coding value and respectively sending the radar primary trace data to a radar terminal and the data processor through a network switch;
the data processor is used for obtaining radar track data according to the second control parameter, the angle coding value and the radar primary trace data and sending the radar track data to a radar terminal through a network switch;
the radar terminal is also used for displaying the radar primary trace data sent by the signal processor and the radar track data sent by the data processor;
the radar terminal is further used for sending a radar data acquisition instruction and a radar data simulation instruction to the radar data simulation equipment; the radar data acquisition instruction comprises a radar data acquisition starting instruction and a radar data acquisition ending instruction, and the radar data simulation instruction comprises a radar data starting simulation instruction and a radar data ending simulation instruction;
the radar data simulation equipment is used for acquiring a network data packet on a network switch according to the radar data start acquisition instruction and acquiring a record file according to the network data packet;
the radar data simulation equipment is further used for obtaining a corresponding record file according to the radar data start simulation instruction and carrying out radar data simulation.
2. Radar data simulation system according to claim 1,
the recording file takes the current time of a radar data simulation system as a file name when the recording file is created, and the data recorded in the recording file comprises a frame header and frame contents;
wherein the frame header comprises: the method comprises the steps of obtaining a current time mark, a data sender IP address, a data sender port, a data receiver IP address, a data receiver port, a data length and a data type; the current time scale is the time when the radar data simulation equipment acquires a network data packet on a network switch, the data types comprise five types, primary trace point data sent to the data processor and the radar terminal by the signal processor is a first data type, track data sent to the radar terminal by the data processor is a second data type, an angle coding value sent to the radar terminal by the servo processor is a third data type, an angle coding value sent to the signal processor and the data processor by the servo processor is a fourth data type, and a signal processing control parameter sent to the signal processor, a data processing control parameter sent to the data processor and a servo control parameter sent to the servo processor by the radar terminal are a fifth data type.
3. Radar data simulation system according to claim 2,
the frame content is the text of the network data packet and comprises the following data transmitted on a network switch:
the signal processor sends primary trace point data to the radar terminal and the data processor; the data processor sends track data to the radar terminal; the servo processor sends an angle coding value to the radar terminal; the servo processor sends the angle coding values to the signal processor and the data processor; the radar terminal sends the signal processing control parameters to the signal processor, the data processing control parameters to the data processor and the servo control parameters to the servo processor.
4. Radar data simulation system according to claim 1,
the radar data simulation equipment is also used for acquiring a corresponding record file according to the radar data start simulation instruction and carrying out radar data simulation;
the radar data simulation starting instruction at least comprises file name information of a recording file where the radar data to be simulated are located and the data type of the radar data to be simulated;
the radar data simulation equipment reads the frame header and the frame content in the corresponding recording file according to the file name information of the recording file in which the radar data to be simulated is located;
when the data type of the radar data to be simulated is a first data type, the radar data simulation equipment sends primary trace data of which the data type is the first data type in the network data packet to the data processor and the radar terminal;
when the data type of the radar data to be simulated is a second data type, the radar data simulation equipment sends track data of which the data type is the second data type in the network data packet to a radar terminal;
when the data type of the radar data to be simulated is a third data type, the radar simulation equipment sends an angle coding value of which the data type is the third data type in the network data packet to a radar terminal;
when the data type of the radar data to be simulated is a fourth data type, the radar simulation equipment sends an angle coding value of which the data type is the fourth data type in the network data packet to the signal processor and the data processor;
and when the data type of the radar data to be simulated is a fifth data type, the radar simulation equipment correspondingly sends the control parameter of which the data type is the fifth data type in the network data packet to the signal processor, the data processor and the servo processor.
5. Radar data simulation system according to claim 4,
when the radar simulation device sends data in the network data packet, a corresponding virtual sender IP address and a corresponding virtual sender port are also required to be created according to the sender IP address and the sender port.
6. A radar data simulation method applied to the radar data simulation system according to claim 1, the radar data simulation method comprising:
the radar terminal sends a radar data acquisition starting instruction to the radar data simulation equipment;
the radar data simulation equipment acquires a network data packet on a network switch according to the radar data start acquisition instruction, and obtains a recording file taking the current time of the radar data simulation system as a file name according to the network data packet; the data recorded in the recording file comprises a frame header and frame contents; wherein the frame header comprises: the method comprises the steps of obtaining a current time mark, a data sender IP address, a data sender port, a data receiver IP address, a data receiver port, a data length and a data type; the current time scale is the time of acquiring a network data packet on a network switch by radar data simulation equipment, the data types comprise five types, primary trace point data sent to a data processor and a radar terminal by the signal processor is a first data type, track data sent to the radar terminal by the data processor is a second data type, an angle coding value sent to the radar terminal by a servo processor is a third data type, an angle coding value sent to the signal processor and the data processor by the servo processor is a fourth data type, a signal processing control parameter sent to the signal processor by the radar terminal, a data processing control parameter sent to the data processor and a servo control parameter sent to the servo processor are fifth data types; the frame content is the text of the network data packet and comprises the following data transmitted on a network switch: the signal processor sends primary trace point data to the radar terminal and the data processor; the data processor sends track data to the radar terminal; the servo processor sends an angle coding value to the radar terminal; the servo processor sends the angle coding values to the signal processor and the data processor; the radar terminal sends a signal processing control parameter to the signal processor, a data processing control parameter to the data processor and a servo control parameter to the servo processor;
the radar terminal sends a radar data acquisition ending instruction to the radar data simulation equipment;
the radar data simulation equipment finishes the radar data acquisition process according to the radar data acquisition finishing instruction;
the radar terminal sends a radar data starting simulation command to the radar data simulation equipment;
the radar data simulation equipment starts to simulate the instruction according to the radar data to obtain a corresponding record file, and radar data simulation is carried out; the radar data starting simulation instruction at least comprises file name information of a recording file where the radar data to be simulated are located and the data type of the radar data to be simulated;
the radar data simulation equipment reads a frame header and frame contents in a corresponding recording file according to file name information of the recording file in which the radar data to be simulated is located;
when the data type of the radar data to be simulated is a first data type, the radar data simulation equipment sends primary trace data of which the data type is the first data type in the network data packet to the data processor and the radar terminal;
when the data type of the radar data to be simulated is a second data type, the radar data simulation equipment sends track data of which the data type is the second data type in the network data packet to a radar terminal;
when the data type of the radar data to be simulated is a third data type, the radar simulation equipment sends an angle coding value of which the data type is the third data type in the network data packet to a radar terminal;
when the data type of the radar data to be simulated is a fourth data type, the radar simulation equipment sends an angle coding value of which the data type is the fourth data type in the network data packet to the signal processor and the data processor;
and when the data type of the radar data to be simulated is a fifth data type, the radar simulation equipment correspondingly sends the control parameter of which the data type is the fifth data type in the network data packet to the signal processor, the data processor and the servo processor.
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| CN111581137B (en) * | 2020-05-21 | 2021-10-15 | 北京润科通用技术有限公司 | Data record recharge system and method |
| CN112037495A (en) * | 2020-08-26 | 2020-12-04 | 天津七一二通信广播股份有限公司 | Locomotive wireless comprehensive communication data monitoring system |
| CN112595733A (en) * | 2020-12-18 | 2021-04-02 | 北京城市排水集团有限责任公司 | Swing control data acquisition method based on ground penetrating radar |
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