A method and system for early warning of the influence degree of solar radio flux on a navigation system

Abstract

The application relates to a warning method and system for the influence degree of solar radio flux on a navigation system, wherein the method comprises the following steps: acquiring solar radio flux in multiple monitoring frequency bands; issuing a warning when the solar radio flux in the multiple monitoring frequency bands all reaches an influence threshold value; wherein the warning is used to represent the influence degree of the solar radio flux on the performance of a target navigation system; the influence threshold value comprises multiple sub-influence threshold values; different sub-influence threshold values correspond to different influence degrees represented by the warning; the warning method provided by the application can represent the influence degree of the solar radio flux on the performance of the navigation system, so that users can take timely countermeasures and reduce the influence of solar radio burst on the performance of the navigation system.

Description

Technical Field

[0001] This application relates to the field of navigation measurement and control, and in particular to a method and system for early warning of the degree of influence of solar radio current on navigation systems. Background Technology

[0002] Navigation systems provide high-precision, high-reliability positioning, navigation, and timing services to various users worldwide, 24 / 7, and also possess short message communication capabilities. The application of navigation systems relies on stability and reliability, but solar radio bursts can directly interfere with them. During a solar radio burst, the solar radio current suddenly increases dramatically. If the frequency band of the burst overlaps with the navigation signal frequency, it will cause varying degrees of radio interference to the navigation system, primarily manifested as a decrease in the signal-to-noise ratio. Observations show that strong solar radio bursts significantly interfere with the reception of navigation signals by navigation systems, and in severe cases, can cause receiver lock-up or even complete interruption, rendering the navigation system unable to perform its basic functions such as navigation, positioning, and timing. Therefore, solar radio bursts have always been a significant factor affecting the performance of navigation systems, and studying the extent to which the solar radio current during a solar radio burst affects the performance of navigation systems is of great importance. Summary of the Invention

[0003] In view of this, this application proposes a method, system, electronic device and storage medium for early warning of the impact of solar radio current on navigation systems. It can indicate the degree of impact of solar radio current on the performance of navigation systems through early warning, so that users can take timely countermeasures to reduce the impact of solar radio bursts on the performance of navigation systems.

[0004] According to one aspect of this application, a method for early warning of the impact of solar radio current on a navigation system is provided. The method includes: acquiring solar radio current in multiple monitoring frequency bands; issuing an early warning when the solar radio current in all multiple monitoring frequency bands reaches an impact threshold; wherein the early warning is used to indicate the degree of impact of the solar radio current on the performance of the target navigation system; the impact threshold includes multiple sub-impact thresholds; and the impact degree indicated by the early warning corresponding to different sub-impact thresholds is different.

[0005] In one possible implementation, the impact threshold includes a first impact threshold; the first impact threshold is the amount of solar radio current corresponding to when a solar radio burst affects the normal operation of the target navigation system.

[0006] In one possible implementation, the impact threshold further includes n second impact thresholds; all n second impact thresholds are greater than the first impact threshold; the method further includes: sorting the n second impact thresholds in ascending order to obtain a second impact threshold sequence; issuing an early warning when the solar radio current in the multiple monitoring frequency bands reaches the impact threshold, including: issuing a first-level early warning when the solar radio current in the multiple monitoring frequency bands reaches the first impact threshold; issuing an (i+1)-level early warning when the solar radio current in the multiple monitoring frequency bands reaches the i-th second impact threshold in the second impact threshold sequence; where n and i are positive integers; the level of the early warning is positively correlated with the degree of impact.

[0007] In one possible implementation, the first influence threshold is calculated based on the antenna gain and operating frequency of the target navigation system, or based on the gain of the target navigation system's antenna pattern deviating from the angle between the sun and the antenna main lobe, and the operating frequency.

[0008] In one possible implementation, the first influence threshold is negatively correlated with the antenna gain and positively correlated with the operating frequency; or, the first influence threshold is negatively correlated with the gain of the antenna pattern deviating from the angle between the sun and the antenna main lobe and positively correlated with the operating frequency.

[0009] According to another aspect of this application, an early warning system for the degree of influence of solar radio current on a navigation system is provided. The system includes: an acquisition module for acquiring solar radio current in multiple monitoring frequency bands; and an early warning issuance module for issuing an early warning when the solar radio current in the multiple monitoring frequency bands all reach an influence threshold. The early warning indicates the degree of influence of the solar radio current on the performance of the target navigation system. The influence threshold includes multiple sub-influence thresholds, and the degree of influence indicated by the early warning corresponding to different sub-influence thresholds is different.

[0010] In one possible implementation, the impact threshold includes a first impact threshold; the first impact threshold is the amount of solar radio current corresponding to when a solar radio burst affects the normal operation of the target navigation system.

[0011] In one possible implementation, the impact threshold further includes n second impact thresholds; all n second impact thresholds are greater than the first impact threshold; the system further includes: a sorting module, used to sort the n second impact thresholds in ascending order to obtain a second impact threshold sequence; the early warning release module is further used to: release a first-level early warning when the solar radio current in the multiple monitoring frequency bands reaches the first impact threshold; and release an (i+1)-th level early warning when the solar radio current in the multiple monitoring frequency bands reaches the i-th second impact threshold in the second impact threshold sequence; wherein n and i are positive integers; the level of the early warning is positively correlated with the degree of impact.

[0012] In one possible implementation, the first influence threshold is calculated based on the antenna gain and operating frequency of the target navigation system, or based on the gain of the target navigation system's antenna pattern deviating from the angle between the sun and the antenna main lobe, and the operating frequency.

[0013] In one possible implementation, the first influence threshold is negatively correlated with the antenna gain and positively correlated with the operating frequency; or, the first influence threshold is negatively correlated with the gain of the antenna pattern deviating from the angle between the sun and the antenna main lobe and positively correlated with the operating frequency.

[0014] According to another aspect of this application, an electronic device is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to implement the aforementioned method for early warning of the degree of influence of solar radio current on a navigation system when executing the instructions stored in the memory.

[0015] According to another aspect of this application, a non-volatile computer-readable storage medium is provided, on which computer program instructions are stored, wherein when the computer program instructions are executed by a processor, the aforementioned method for early warning of the degree of influence of solar radio current on a navigation system is implemented.

[0016] According to another aspect of this application, a computer program product is provided, including computer-readable code, or a non-volatile computer-readable storage medium carrying computer-readable code, wherein when the computer-readable code is run in a processor of an electronic device, the processor in the electronic device executes the aforementioned method for early warning of the degree of influence of solar radio current on a navigation system.

[0017] The method for early warning of the impact of solar radio current on navigation systems provided in this application compares the real-time acquired solar radio current with multiple sub-impact thresholds. When the solar radio current in multiple monitoring frequency bands reaches the impact threshold, an early warning is issued. The different sub-impact thresholds correspond to different degrees of impact of solar radio current on navigation system performance, thereby allowing users to intuitively understand the current impact of solar radio current on navigation system performance and take timely countermeasures to reduce the impact of solar radio bursts on navigation system performance.

[0018] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0020] Figure 1 A flowchart illustrating a method for early warning of the degree of influence of solar radio current on a navigation system according to an embodiment of this application is shown.

[0021] Figure 2 This diagram illustrates the selection of the monitoring frequency band for a solar radio telescope according to an embodiment of this application.

[0022] Figure 3 This diagram illustrates the structure of an early warning system for assessing the impact of solar radio flux on a navigation system according to an embodiment of this application.

[0023] Figure 4 A block diagram of an electronic device 1900 according to an embodiment of this application is shown. Detailed Implementation

[0024] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0025] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0026] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0027] Solar radio bursts have a direct impact on the performance of navigation systems, and in severe cases, can even cause navigation systems to lose their basic functions such as navigation, positioning, and timing. Therefore, it is of great significance to study the extent to which solar radio currents during solar radio bursts affect the performance of navigation systems and to provide early warnings when the performance of navigation systems is compromised.

[0028] In view of this, embodiments of this application provide an early warning method for the degree of influence of solar radio current on navigation systems. This method can indicate the degree of influence of solar radio current on navigation system performance through early warning, enabling users to take timely countermeasures and reduce the impact of solar radio bursts on navigation system performance.

[0029] Figure 1 A flowchart illustrating a method for early warning of the impact of solar radio flux on a navigation system according to an embodiment of this application is shown, as follows: Figure 1 As shown, the method may include:

[0030] S101. Obtain solar radio current in multiple monitoring frequency bands.

[0031] For example, solar radio currents in multiple monitoring frequency bands can be acquired in real time using a solar radio telescope.

[0032] Solar radio telescopes can monitor solar radio flux in multiple monitoring frequency bands, which can be bands free from radio interference signals. Figure 2 This diagram illustrates the selection of the monitoring frequency band for a solar radio telescope according to an embodiment of this application, as shown below. Figure 2 As shown, multiple frequency bands free from radio interference signals can be identified through radio spectrum analysis. A front-end analog filter bank can be constructed using navigation frequency bands B1, B2, and B3 as boundaries. Navigation frequency bands B1, B2, and B3 can be determined based on the navigation system. Eight frequency bands (f1–f8) uniformly distributed around B1, B2, and B3, free from radio interference signals, can be selected as monitoring frequency bands, each with the same bandwidth. If strong radio interference signals prevent the monitoring frequency bands from being uniformly distributed around B1, B2, and B3, the monitoring frequency bands can be adjusted. In this way, the solar radio telescope can monitor solar radio current within multiple monitoring frequency bands free from radio interference signals, effectively avoiding the influence of radio interference signals and achieving stable monitoring of solar radio current.

[0033] As an example, a solar radio telescope can be an L-band solar radio telescope. Multiple frequency bands with the same bandwidth that are free from radio interference signals can be selected within the L-band (1-2 GHz) as monitoring bands. The bandwidth of each monitoring band can be within 10 MHz. The solar radio flux in the L-band can be obtained in real time through this L-band solar radio telescope.

[0034] S102. When the solar radio current in the multiple monitoring frequency bands reaches the impact threshold, an early warning is issued; wherein, the early warning is used to indicate the degree of impact of the solar radio current on the performance of the target navigation system; the impact threshold includes multiple sub-impact thresholds; the degree of impact indicated by the early warning corresponding to different sub-impact thresholds is different.

[0035] "Reaching" means equal to or greater than, that is, when the solar radio current in multiple monitoring frequency bands is equal to or greater than the impact threshold, an early warning is issued.

[0036] For example, the target navigation system may be the Global Positioning System (GPS), the Global Navigation Satellite System (GLONASS), the BeiDou-1 (BD1) satellite navigation system, the BeiDou-2 (BD2) satellite navigation system, or the Galileo satellite navigation system.

[0037] This application compares the real-time solar radio current with multiple sub-influence thresholds. When the solar radio current in multiple monitoring frequency bands reaches the influence threshold, an early warning is issued. The different sub-influence thresholds correspond to different degrees of impact of the solar radio current on the navigation system performance. This allows users to intuitively understand the current impact of the solar radio current on the navigation system performance and take timely countermeasures to reduce the impact.

[0038] In one possible implementation, the impact threshold includes a first impact threshold; the first impact threshold is the amount of solar radio current corresponding to when a solar radio burst affects the normal operation of the target navigation system.

[0039] For example, the first influence threshold can be calculated based on the antenna gain and operating frequency of the target navigation system, or it can be calculated based on the gain of the target navigation system's antenna pattern deviating from the angle between the sun and the antenna main lobe, and the operating frequency. Specifically, the first influence threshold is negatively correlated with the antenna gain and positively correlated with the operating frequency; or, the first influence threshold is negatively correlated with the gain of the antenna pattern deviating from the angle between the sun and the antenna main lobe and positively correlated with the operating frequency.

[0040] Navigation data received by a navigation system receiver during a solar radio burst can be analyzed to calculate the threshold of the impact of the solar radio burst flux on the navigation system. The mechanism by which a solar radio burst affects a navigation system is derived as follows: Assuming a navigation system has an operating bandwidth of B (Hz) and an operating temperature of T (K), the noise power P introduced by the external environment to the navigation system receiver is:

[0041] P = kTB (1)

[0042] Where k is the Boltzmann constant. Various random noises F (unit: W / m²) 2 The noise power P introduced by the antenna R (Unit: W / Hz) is:

[0043]

[0044] Where G is the antenna gain of the navigation system (in dB), and λ is the operating wavelength of the navigation system (in meters). Let F... eq Equivalent solar radio current for navigation system receivers (unit: SFU, 1 SFU = 10 -22 W / m 2 / Hz), then we have

[0045] F = B * F eq (3)

[0046] Solving the equations (1), (2), and (3) simultaneously, we get:

[0047]

[0048]

[0049] Among them, F sfu Let be the equivalent solar radio current density. Then we have:

[0050] F eq =8π*kT / (Gλ) 2 (6)

[0051] As can be seen from formula (6), the equivalent solar radio current is independent of the bandwidth of the navigation system receiver. eq Convert to F sfu for:

[0052] F sfu =8π*kT / (Gλ) 2 )*10 22 (7)

[0053] or

[0054] F sfu=8π*kT*f 2 / (G*c 2 )*10 22 (8)

[0055] Where f is the operating frequency of the navigation system and c is the speed of light. Based on the above derivation, the external noise flux density of the navigation system receiver, converted to the equivalent solar radio current flux density, is inversely proportional to the antenna gain G and the square of the operating wavelength λ, or directly proportional to the square of the operating frequency f.

[0056] Taking into account the influence of the angle between the sun and the antenna main lobe, formula (8) can be modified as follows:

[0057] F sfu =8π*kT*f 2 / (G(θ)*c 2 )*10 22 (9)

[0058] Where θ is the angle between the sun and the main lobe of the antenna, and G(θ) is the gain of the antenna pattern deviating from the main lobe by an angle θ. It can be seen from formula (9) that the equivalent solar radio current density is affected by the antenna pattern and the angle between the sun and the main lobe of the antenna. The equivalent solar radio current density is inversely proportional to the gain G(θ) of the angle between the antenna pattern and the main lobe of the antenna.

[0059] The threshold of the impact of solar radio burst flux on the navigation system (i.e., the first impact threshold) can be calculated based on the above derivation and formula. Table 1 shows the impact threshold of solar radio burst interference on various navigation systems operating at different frequencies according to an embodiment of this application. Table 1 shows the equivalent solar radio current converted from receiver equivalent noise when the antenna gain is 10dB and 20dB for GPS navigation system, GLONASS navigation system, Beidou-1 satellite navigation system, Beidou-2 satellite navigation system and Galileo satellite navigation system operating at different frequencies.

[0060] Table 1

[0061]

[0062]

[0063] The equivalent solar radio current in Table 1 can be used as the first impact threshold for each navigation system. For example, for a GPS navigation system with an operating frequency of 1575MHz and an antenna gain of 10dB, the first impact threshold can be obtained as 2770SFU according to Table 1.

[0064] In one possible implementation, before issuing the aforementioned warning, the method may further include: issuing precursor information when the solar radio current in multiple monitoring frequency bands increases; issuing a forecast signal when the solar radio current in multiple monitoring frequency bands reaches half of a first impact threshold; and issuing a current report signal when the solar radio current in multiple monitoring frequency bands reaches the first impact threshold.

[0065] As an example, the solar radio telescope can be an L-band solar radio telescope, and the target navigation system can be the Beidou-1 satellite navigation system. The operating frequency of the Beidou-1 satellite navigation system can be 1615.68MHz, and the antenna gain can be 10dB. According to Table 1, the first influence threshold corresponding to the Beidou-1 satellite navigation system is 2910SFU. The L-band solar radio telescope can monitor solar radio current in real time across multiple monitoring bands. When an increase in solar radio current is detected across all monitoring bands, precursor information can be issued to prepare for early warning. For example, text messages can be sent to users informing them of abnormal solar radio current and reminding them to take precautions. When the solar radio current in all monitoring bands reaches half of the first impact threshold (i.e., 1455 SFU), a forecast signal can be issued to inform users of a possible solar radio burst that may affect the normal operation of the target navigation system. When the solar radio current in all monitoring bands reaches the first impact threshold (i.e., 2910 SFU), a current report signal can be issued to inform users that the solar radio current has already affected the normal operation of the target navigation system. Precursor information, forecast signals, and current reports can be issued within 10 minutes of acquiring solar radio current data. In this way, by issuing precursor information, forecast signals, and current reports based on the rise in solar radio current, it is possible to issue timely forecasts and alert users in the early stages of solar radio bursts, reminding them that their navigation systems may be affected, allowing them to take countermeasures in advance. Furthermore, it is possible to promptly inform users when solar radio current has already affected the normal operation of the navigation system, enabling them to take timely measures, thereby reducing the impact of solar radio bursts on the navigation system and improving operational effectiveness.

[0066] For example, after issuing a current report signal, the solar radio current in multiple monitoring frequency bands can be compared with the impact threshold. When the solar radio current in each monitoring frequency band reaches the impact threshold, an early warning is issued.

[0067] In one possible implementation, the influence threshold may further include n second influence thresholds; all n second influence thresholds are greater than the first influence threshold; the method may further include: sorting the n second influence thresholds in ascending order to obtain a second influence threshold sequence.

[0068] For example, n second impact thresholds can be determined based on the degree of influence of solar radio current on the performance of the navigation system, and the n second impact thresholds can be sorted from smallest to largest.

[0069] The impact of solar radio flux on the channel capacity and signal-to-noise ratio (SNR) of the navigation system can be considered. According to Shannon's formula, the channel capacity C (in bits per second) is:

[0070]

[0071] Where W is the channel bandwidth, S is the signal power, and N is the channel noise level. According to Shannon's formula, increasing the signal-to-noise ratio (SNR) increases signal capacity; conversely, when the channel capacity is constant, the channel bandwidth is affected by the SNR. Higher noise results in lower channel bandwidth. When the channel bandwidth is constant and the SNR S / N decreases, the channel capacity decreases, leading to bit errors. Based on the above inference, it can be assumed that in the absence of solar radio bursts or other interference, the original noise floor of the navigation system receiver is N0, and the channel capacity C0 at this time is:

[0072]

[0073] A solar radio burst is equivalent to adding a new external noise N to the existing noise floor N0 of a navigation system receiver. S The noise N of the navigation system at this time eff for:

[0074] N eff =N0+N S (12)

[0075] Generally, at the instant of a solar radio burst, the power S of the navigation signal and the instantaneous channel bandwidth W can be considered constant. The affected channel capacity C at this time... eff for:

[0076]

[0077] As can be seen from formula (13), the decrease in channel capacity depends on the sum of the noise and signal power of the navigation system receiver itself, N0+S, and the solar radio burst noise, N. S The ratio of .

[0078] For example, the impact of solar radio current on the performance of the navigation system can be analyzed based on the influence of solar radio current on the channel capacity of the navigation system and the signal-to-noise ratio of the navigation signal received by the navigation system receiver, and a second impact threshold can be determined.

[0079] When the signal-to-noise ratio (SNR) of a navigation signal deteriorates, the quality of pseudorange observations is the first to be affected. Since the pseudorange observations in the navigation signal receiver are output by the pseudocode tracking loop, the degree of deterioration in pseudorange observations can be determined by analyzing the performance of the pseudocode loop under different SNR conditions. According to relevant technologies, as the SNR deteriorates, the steady-state phase noise gradually increases; increasing the coherence integral length can, to some extent, suppress the impact of SNR deterioration. The tracking sensitivity in a navigation system receiver is generally capable of -150 dBm, while the strength of GPS / BeiDou signals that can be received on the Earth's surface under open skies is typically around -130 dBm. However, during this process, the positioning error of the navigation system gradually worsens as the noise floor increases. Analysis shows that when the noise floor deteriorates by a factor of 10 (i.e., when the solar radio current reaches 10 times the first impact threshold), some functions of the navigation system will decrease; when the noise floor deteriorates by more than a factor of 100 (i.e., when the solar radio current reaches more than 100 times the first impact threshold), the tracking loop of the navigation signal receiver will be unable to lock onto the satellite signal, leading to positioning failure. As an example, two second impact thresholds can be determined, namely 10 times and 100 times the first impact threshold.

[0080] In one possible implementation, issuing an early warning when solar radio currents in multiple monitoring frequency bands all reach an impact threshold may include:

[0081] A Level 1 warning will be issued when the solar radio current in multiple monitoring frequency bands reaches the first impact threshold.

[0082] When the solar radio current in multiple monitoring frequency bands reaches the i-th second impact threshold in the second impact threshold sequence, a level i+1 warning is issued.

[0083] Where n and i are positive integers; the warning level is positively correlated with the degree of influence of solar radio flux on the target navigation system performance.

[0084] As an example, the first impact threshold can be denoted as N1, and two second impact thresholds, N2 and N3, can be determined, where N2 is 10 times N1 and N3 is 100 times N1. N2 and N3 can be sorted to obtain the second impact threshold sequence {N2, N3}. The solar radio current in multiple monitoring bands obtained through a solar radio telescope can be compared with the impact thresholds N1, N2, and N3. When the solar radio current in each monitoring band reaches the first impact threshold N1, analysis shows that the signal-to-noise ratio (SNR) of the navigation signal received by the target navigation system decreases by approximately 3 dB compared to the SNR of the navigation signal received when the target navigation system is operating normally. The performance of the target navigation system begins to be affected, and a first-level warning can be issued, indicating that the solar radio current has a slight impact on the performance of the target navigation system. When the solar radio current in each monitoring band reaches the first second impact threshold (i.e., N2) in the second impact threshold sequence, analysis shows that the SNR of the navigation signal received by the target navigation system decreases by approximately 3 dB compared to the SNR of the navigation signal received when the target navigation system is operating normally. If the signal-to-noise ratio (SNR) of the navigation signal drops by more than 10 dB, some functions of the target navigation system have been degraded. At this point, a second-level warning can be issued, indicating that the solar radio current has had a moderate impact on the performance of the target navigation system. When the solar radio current in each monitoring frequency band reaches the second second impact threshold (i.e., N3) in the second impact threshold sequence, analysis shows that the SNR of the navigation signal received by the target navigation system has dropped by more than 20 dB compared to the SNR of the navigation signal received when the target navigation system is working normally, and navigation and positioning functions can no longer be achieved. At this point, a third-level warning can be issued, indicating that the solar radio current has had a severe impact on the performance of the target navigation system.

[0085] This application embodiment compares the solar radio current acquired in real time through a solar radio telescope with multiple sub-influence thresholds, and issues multi-level warnings based on the comparison results. The increase in the warning level indicates an increase in the degree of influence of the solar radio current on the navigation system performance. This allows users to intuitively understand the current degree of influence of the solar radio current on the navigation system performance, enabling users to take timely countermeasures based on the degree of decline in navigation system performance and reduce the impact.

[0086] For example, various parameter information of the target navigation system can be monitored and recorded. As an example, the target navigation system can employ a GPS / BeiDou dual-mode quad-frequency receiver, which can monitor GPS / BD satellite navigation signals in real time and receive and output navigation data such as latitude and longitude, altitude, speed, Universal Time Coordinated (UTC), number of visible satellites, positioning status, Geometric Dilution of Precision (GDOP), signal-to-noise ratio of visible satellites, elevation angle, azimuth angle, pseudorange, carrier phase, narrowband power, and wideband power. The geometrical precision factor can include position dilution of precision (PDOP), time dilution of precision (TDOP), horizontal dilution of precision (HDOP), and vertical dilution of precision (VDOP).

[0087] For example, the navigation data received by the target navigation system can be analyzed and processed, and combined with solar radio current data, the actual impact of solar radio current on the performance of the target navigation system can be analyzed, thereby verifying the accuracy of the warning results.

[0088] Based on the same inventive concept as the above-described method for early warning of the degree of influence of solar radio current on navigation systems, this application also provides an early warning system for the degree of influence of solar radio current on navigation systems.

[0089] Figure 3 This diagram illustrates the structure of an early warning system for the degree of influence of solar radio flux on a navigation system according to an embodiment of this application. This system can be used to perform the aforementioned... Figure 1 The steps of the method shown are as follows: Figure 3 As shown, the system may include: an acquisition module 301, used to acquire solar radio current in multiple monitoring frequency bands; and an early warning release module 302, used to release an early warning when the solar radio current in the multiple monitoring frequency bands all reach an impact threshold; wherein the early warning is used to indicate the degree of impact of the solar radio current on the performance of the target navigation system; the impact threshold includes multiple sub-impact thresholds; the degree of impact indicated by the early warning corresponding to different sub-impact thresholds is different.

[0090] In one possible implementation, the impact threshold includes a first impact threshold; the first impact threshold is the amount of solar radio current corresponding to when a solar radio burst affects the normal operation of the target navigation system.

[0091] In one possible implementation, the impact threshold further includes n second impact thresholds; all n second impact thresholds are greater than the first impact threshold; the system further includes: a sorting module, used to sort the n second impact thresholds in ascending order to obtain a second impact threshold sequence; the early warning release module 302 is further used to: release a first-level early warning when the solar radio current in the multiple monitoring frequency bands reaches the first impact threshold; and release an (i+1)-th level early warning when the solar radio current in the multiple monitoring frequency bands reaches the i-th second impact threshold in the second impact threshold sequence; wherein n and i are positive integers; the level of the early warning is positively correlated with the degree of impact.

[0092] In one possible implementation, the first influence threshold is calculated based on the antenna gain and operating frequency of the target navigation system, or based on the gain of the target navigation system's antenna pattern deviating from the angle between the sun and the antenna main lobe, and the operating frequency.

[0093] In one possible implementation, the first influence threshold is negatively correlated with the antenna gain and positively correlated with the operating frequency; or, the first influence threshold is negatively correlated with the gain of the antenna pattern deviating from the angle between the sun and the antenna main lobe and positively correlated with the operating frequency.

[0094] This application compares the real-time solar radio current with multiple sub-influence thresholds. When the solar radio current in multiple monitoring frequency bands reaches the influence threshold, an early warning is issued. The different sub-influence thresholds correspond to different degrees of impact of the solar radio current on the navigation system performance. This allows users to intuitively understand the current impact of the solar radio current on the navigation system performance and take timely countermeasures to reduce the impact.

[0095] This application also provides an electronic device, including: a processor; and a memory for storing processor-executable instructions; wherein the processor is configured to implement the above-mentioned instructions when executing the instructions stored in the memory. Figure 1 A method for early warning of the impact of solar radio current on navigation systems.

[0096] Figure 4 A block diagram of an electronic device 1900 according to an embodiment of this application is shown. For example, the electronic device 1900 may be provided as a server or a terminal device. (Refer to...) Figure 4The electronic device 1900 includes a processing component 1922, which further includes one or more processors, and a memory resource represented by a memory 1932 for storing instructions executable by the processing component 1922, such as application programs. The application programs stored in the memory 1932 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 1922 is configured to execute instructions to perform the aforementioned... Figure 1 A method for early warning of the impact of solar radio current on navigation systems.

[0097] Electronic device 1900 may also include a power supply component 1926 configured to perform power management of electronic device 1900, a wired or wireless network interface 1950 configured to connect electronic device 1900 to a network, and an input / output (I / O) interface 1958. Electronic device 1900 can operate on an operating system stored in memory 1932, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or similar.

[0098] This application also proposes a computer-readable storage medium storing computer program instructions thereon, which, when executed by a processor, implement the above-described functionality. Figure 1 A method for early warning of the impact of solar radio current on navigation systems. The computer-readable storage medium can be volatile or non-volatile.

[0099] In an exemplary embodiment, a non-volatile computer-readable storage medium is also provided, such as a memory 1932 including computer program instructions, which can be executed by the processing component 1922 of the electronic device 1900 to perform the above-described tasks. Figure 1 A method for early warning of the impact of solar radio current on navigation systems.

[0100] This application also provides a computer program product, including computer-readable code, or a non-volatile computer-readable storage medium carrying computer-readable code. When the computer-readable code is executed in the processor of an electronic device, the processor in the electronic device performs the above-described... Figure 1 A method for early warning of the impact of solar radio current on navigation systems.

[0101] This application may be a system, method, and / or computer program product. A computer program product may include a computer-readable storage medium having computer-readable program instructions loaded thereon for causing a processor to implement various aspects of this application.

[0102] Computer-readable storage media can be tangible devices capable of holding and storing instructions for use by an instruction execution device. Computer-readable storage media can be, for example—but not limited to—electrical storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, or any suitable combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital multifunction disc (DVD), memory sticks, floppy disks, mechanical encoding devices, such as punch cards or recessed protrusions storing instructions thereon, and any suitable combination thereof. The computer-readable storage media used herein are not to be construed as transient signals themselves, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., light pulses through fiber optic cables), or electrical signals transmitted through wires.

[0103] The computer-readable program instructions described herein can be downloaded from computer-readable storage media to various computing / processing devices, or downloaded via a network, such as the Internet, local area network, wide area network, and / or wireless network, to an external computer or external storage device. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards them to the computer-readable storage media in the respective computing / processing device.

[0104] The computer program instructions used to perform the operations of this application may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Smalltalk, C++, etc., and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The computer-readable program instructions may be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or may be connected to an external computer (e.g., via the Internet using an Internet service provider). In some embodiments, electronic circuits, such as programmable logic circuits, field-programmable gate arrays (FPGAs), or programmable logic arrays (PLAs), are personalized by utilizing the status information of the computer-readable program instructions. These electronic circuits can execute the computer-readable program instructions to implement various aspects of this application.

[0105] Various aspects of this application are described herein with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-readable program instructions.

[0106] These computer-readable program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that, when executed by the processor of the computer or other programmable data processing apparatus, they create means for implementing the functions / actions specified in one or more blocks of the flowchart and / or block diagram. These computer-readable program instructions can also be stored in a computer-readable storage medium that causes a computer, programmable data processing apparatus, and / or other device to operate in a particular manner; thus, the computer-readable medium storing the instructions comprises an article of manufacture that includes instructions for implementing aspects of the functions / actions specified in one or more blocks of the flowchart and / or block diagram.

[0107] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to perform the functions / actions specified in one or more boxes of a flowchart and / or block diagram.

[0108] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of an instruction containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0109] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technological improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A method for early warning of the impact of solar radio current on a navigation system, characterized in that, The method includes: Acquire solar radio current in multiple monitoring frequency bands; When the solar radio current in the multiple monitoring frequency bands reaches the impact threshold, an early warning is issued; wherein, the early warning is used to indicate the degree of impact of the solar radio current on the performance of the target navigation system; the impact threshold includes multiple sub-impact thresholds; the impact degree indicated by the early warning corresponding to different sub-impact thresholds is different; The impact threshold includes a first impact threshold; the first impact threshold is the amount of solar radio current corresponding to when a solar radio burst affects the normal operation of the target navigation system; the impact threshold also includes n second impact thresholds; all n second impact thresholds are greater than the first impact threshold; The method further includes: The n second influence thresholds are sorted in ascending order to obtain a second influence threshold sequence; When the solar radio current in all of the aforementioned monitoring frequency bands reaches the impact threshold, an early warning will be issued, including: When the solar radio current in all of the multiple monitoring frequency bands reaches the first impact threshold, a first-level warning is issued. When the solar radio current in all of the multiple monitoring frequency bands reaches the i-th second impact threshold in the second impact threshold sequence, a level i+1 warning is issued. Where n and i are positive integers; the level of the warning is positively correlated with the degree of impact.

2. The early warning method for the degree of influence of solar radio current on a navigation system according to claim 1, characterized in that, The first influence threshold is calculated based on the antenna gain and operating frequency of the target navigation system, or based on the gain of the target navigation system's antenna pattern deviating from the angle between the sun and the antenna main lobe, and the operating frequency.

3. The early warning method for the degree of influence of solar radio current on a navigation system according to claim 2, characterized in that, The first influence threshold is negatively correlated with the antenna gain and positively correlated with the operating frequency; or, the first influence threshold is negatively correlated with the gain of the antenna pattern deviating from the angle between the sun and the main lobe of the antenna and positively correlated with the operating frequency.

4. A warning system for the degree of influence of solar radio current on a navigation system, characterized in that, The system includes: The acquisition module is used to acquire solar radio current in multiple monitoring frequency bands; The early warning issuance module is used to issue an early warning when the solar radio current in the multiple monitoring frequency bands reaches the impact threshold; wherein, the early warning is used to indicate the degree of impact of the solar radio current on the performance of the target navigation system; the impact threshold includes multiple sub-impact thresholds; the early warnings corresponding to different sub-impact thresholds indicate different degrees of impact; The impact threshold includes a first impact threshold; the first impact threshold is the amount of solar radio current corresponding to when a solar radio burst affects the normal operation of the target navigation system; the impact threshold also includes n second impact thresholds; all n second impact thresholds are greater than the first impact threshold; The system also includes: The sorting module is used to sort the n second influence thresholds in ascending order to obtain a second influence threshold sequence; The early warning release module is also used for: When the solar radio current in all of the multiple monitoring frequency bands reaches the first impact threshold, a first-level warning is issued. When the solar radio current in all of the multiple monitoring frequency bands reaches the i-th second impact threshold in the second impact threshold sequence, a level i+1 warning is issued. Where n and i are positive integers; the level of the warning is positively correlated with the degree of impact.

5. An electronic device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to implement the method of any one of claims 1-3 when executing instructions stored in the memory.

6. A non-volatile computer-readable storage medium storing computer program instructions thereon, characterized in that, When the computer program instructions are executed by the processor, they implement the method of any one of claims 1-3.

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