Navigation method and device

Abstract

The present application discloses a navigation method and device, belonging to the field of communication application technology. The method comprises: obtaining road condition information of a target area; the distance between the target area and the area where the electronic device is currently located is less than a set distance; the road condition information at least includes geographical location information and corresponding GPS signal strength; determining the area type of the target area according to the geographical location information and the corresponding GPS signal strength; and generating navigation information according to the area type.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a navigation method and a device thereof. Background Art

[0002] With the development of satellite communication technology, the navigation technology derived from it can bring great convenience to people's daily travel. However, the signal of the Global Positioning System (GPS) cannot cover every corner. In some areas or under certain conditions, there may be no GPS signal at all, or the GPS signal is very weak, which will cause the navigation map not to be updated, the navigation route cannot be planned, and roadblocks, dangerous sections or congested sections cannot be avoided in time, affecting people's daily travel. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a navigation method that can avoid the problem that the navigation service cannot be used in a specific scenario, thereby ensuring the accuracy and continuity of the navigation service.

[0004] In a first aspect, an embodiment of the present application provides a navigation method, the method comprising:

[0005] Acquire traffic information of a target area; the distance between the target area and the area where the electronic device is currently located is less than a set distance; the traffic information at least includes geographical location information and corresponding GPS signal strength;

[0006] Determining the area type of the target area according to the geographical location information and the corresponding GPS signal strength;

[0007] Navigation information is generated according to the area type.

[0008] In a second aspect, an embodiment of the present application provides a navigation device, the device comprising:

[0009] An acquisition module is used to acquire traffic information of a target area; the distance between the target area and the area where the electronic device is currently located is less than a set distance; the traffic information at least includes geographical location information and corresponding GPS signal strength;

[0010] A determination module, used to determine the area type of the target area according to the geographical location information and the corresponding GPS signal strength;

[0011] A generating module is used to generate navigation information according to the area type.

[0012] In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the first aspect.

[0013] In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.

[0014] In a fifth aspect, an embodiment of the present application provides a chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect.

[0015] In the embodiment of the present application, the traffic information of the target area is obtained; the distance between the target area and the area where the electronic device is currently located is less than the set distance; the traffic information includes at least geographic location information and corresponding GPS signal strength; the area type of the target area is determined according to the geographic location information and the corresponding GPS signal strength; and navigation information is generated according to the area type. By determining the area type corresponding to the target area through the traffic information of the target area obtained in advance, the navigation information in the target area is generated in different ways according to different area types, which can avoid the problem that the navigation service cannot be used in a specific scenario, and ensure the accuracy and continuity of the navigation service. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a flowchart of a navigation method according to an embodiment of the present application;

[0017] Figure 2 A schematic diagram of the structure of a navigation device according to an embodiment of the present application;

[0018] Figure 3 is a schematic diagram of the structure of an electronic device according to an embodiment of the present application;

[0019] Figure 4 A schematic diagram of the hardware structure of an electronic device to implement an embodiment of the present application. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0021] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0022] The navigation method provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0023] Figure 1 1 is a flowchart of a navigation method according to an embodiment of the present application. The navigation method according to an embodiment of the present application may be executed by a navigation device, for example, and the navigation device may be arranged in an electronic device such as a smart phone, a tablet computer, or a smart watch.

[0024] like Figure 1 As shown, the navigation method of this embodiment may include the following steps 1100 to 1300:

[0025] Step 1100, obtaining traffic information of a target area; the distance between the target area and the area where the electronic device is currently located is less than a set distance; the traffic information at least includes geographic location information and corresponding GPS signal strength.

[0026] In this embodiment, in order to ensure the continuity and accuracy of navigation, the electronic device is connected to the navigation device during the navigation process, and the navigation device can obtain information through the electronic device. In this step, the electronic device can obtain the road condition information of the target area from the information database in the cloud server based on the communication connection with the cloud server; the information database is pre-built according to the geographical location information and the corresponding GPS signal strength.

[0027] For example, when constructing the information database, geographical locations where the navigation device often cannot receive GPS signals, geographical locations where the GPS signal strength is weak and the GPS signal strength at the geographical locations, as well as geographical locations where the GPS signal is suddenly lost and basic road information in the areas where these geographical locations are located can be collected first, and the information database can be constructed based on the geographical location information, the corresponding GPS signal strength and the basic road information. It is understandable that in order to ensure the accuracy of the navigation information, the data in the information database will be updated regularly.

[0028] In this way, during vehicle driving, the electronic device can extract the road condition information of the target area from the information database based on the communication connection with the cloud server, and thus determine in advance which area type the target area belongs to based on the acquired road condition information.

[0029] Step 1200: Determine the area type of the target area according to the geographical location information and the corresponding GPS signal strength.

[0030] It should be noted that common scenarios where GPS signals cannot be received or where the GPS signal strength is weak include: scenarios where there is no GPS signal coverage at all, such as tunnels and basements; scenarios where there is no GPS signal at certain angles due to obstructions such as buildings and trees, but there is GPS signal at other angles; scenarios where the car is blocked by the metal film, resulting in the inability to receive GPS signals inside the car; sudden scenarios such as damage to the GPS antenna in the car or on the mobile phone; scenarios of interference caused by extreme weather; scenarios of artificial interference such as electromagnetic noise interference from equipment or signal interference from mobile base stations.

[0031] In this embodiment, the above scenarios are classified into the first area type, the second area type and the third area type. In the first area type, the current area is completely without GPS signal coverage, and the navigation device cannot obtain the real-time geographic information and vehicle information of the current location; in the second area type, the GPS signal strength obtained by the navigation device is weak; in the third area type, at the current location or current angle, the navigation device cannot obtain the GPS signal, but at other angles or locations, the GPS signal of the area can be obtained.

[0032] In this step, after acquiring the geographical location information of the target area and the corresponding GPS signal strength, the electronic device can determine which of the above three categories the target area belongs to based on the GPS signal strength and the geographical location information.

[0033] After determining the area type of the target area, execute step 1300:

[0034] Step 1300: Generate navigation information according to the area type.

[0035] In this step, different navigation schemes may be selected to generate navigation information according to different area types.

[0036] Optionally, when the area type of the target area is the first type of area type, that is, there is no GPS signal in the target area, the electronic device can obtain and cache the road information of the target area from the cloud server based on the communication connection with the cloud server; when driving into the target area, generate the navigation information based on the cached road information.

[0037] In practical applications, in areas without GPS signals, such as tunnels, information recording devices such as camera terminals can be installed in front and behind the vehicle, and the electronic equipment can be connected to the vehicle's driving recorder. The electronic equipment analyzes the data obtained by the information recording device and the driving recorder to obtain the number of vehicles in the front area, and can calculate the vehicle's driving speed based on the travel time of each vehicle in the tunnel recorded by the electronic equipment and the length of the tunnel. In this way, the driver can be provided with optimized navigation services based on the driver's driving habits, as well as information such as the number of vehicles in the front area and the vehicle's driving speed.

[0038] Optionally, when the area type of the target area is the second area type, that is, when the GPS signal strength in the target area is weak, the electronic device may first obtain the strength of the mobile network signal, and compare the mobile network signal strength with a preset first threshold and a preset second threshold, respectively, and select a navigation scheme according to the comparison result to generate navigation information. The first threshold is less than the second threshold.

[0039] Specifically, when driving into the target area and the mobile network signal strength is less than the first threshold, a GPS signal amplifier is required, that is, a GPS signal amplifier is set outside the vehicle. Since the receiver and transmitter of the GPS signal amplifier are installed with a wired connection, this is very inconvenient when used, and the transmitter and receiver may interfere with each other. Therefore, in this embodiment, it is considered to cancel the transmitter of the GPS signal amplifier and add a Bluetooth function to the GPS signal amplifier. In this way, after the GPS signal amplifier receives the GPS signal and enhances it, the GPS information can be directly transmitted to the electronic device via Bluetooth, and then the electronic device can assist in navigation.

[0040] In this embodiment, when the vehicle enters the target area and the mobile network signal strength is less than a first threshold, GPS information is received through a GPS signal amplifier; and the navigation information is generated based on the GPS information to improve the continuity and accuracy of navigation.

[0041] Specifically, when the area type of the target area is the second area type and the mobile network signal strength is greater than the second threshold, the cloud server can directly send the navigation information to the electronic device, and the electronic device uses the received navigation information for auxiliary navigation.

[0042] Specifically, when the electronic device enters the target area and the mobile network signal strength is greater than the second threshold, the electronic device obtains navigation information of the target area from the cloud server based on the communication connection with the cloud server. In some feasible implementations, the electronic device may also feed back real-time navigation information of the current location to the cloud server, so that the cloud server updates or adjusts the navigation information in the target area according to the real-time navigation information fed back by the electronic device.

[0043] Optionally, when the area type of the target area is the third category area type, that is, at the current position or current angle, the navigation device alone cannot obtain the GPS signal, but at other angles or positions, the GPS signal of the area can be obtained, a removable GPS module is required to achieve navigation.

[0044] Specifically, a position or angle that is conducive to receiving GPS signals can be pre-set, and a mobile track can be installed. In this way, the mobile GPS module can be called to find the angle or position where the GPS signal is not blocked, and the reception of the GPS signal can be restored. At the same time, the mobile GPS module is equipped with a Bluetooth function. When the mobile GPS module receives GPS information, it transmits it to the electronic device through the Bluetooth function, so that the electronic device uses the received GPS information for auxiliary navigation.

[0045] Specifically, when the vehicle enters the target area, the movable GPS module is controlled to move along a preset path to obtain GPS information; the electronic device may generate the navigation information according to the GPS information obtained by the movable GPS module.

[0046] Among them, the preset path refers to the path planned by the mobile track. In this way, when the area type of the target area is the third type of area, the movable GPS module can be controlled to move along the preset path between positions or angles that are conducive to receiving GPS signals to restore the reception of GPS signals.

[0047] The navigation method of the embodiment of the present application obtains the traffic information of the target area; the distance between the target area and the area where the electronic device is currently located is less than the set distance; the traffic information includes at least the geographical location information and the corresponding GPS signal strength; the area type of the target area is determined according to the geographical location information and the corresponding GPS signal strength; and navigation information is generated according to the area type. By determining the area type corresponding to the target area through the traffic information of the target area obtained in advance, the navigation information in the target area is generated in different ways according to different area types, which can avoid the problem that the navigation service cannot be used in a specific scenario, and ensure the accuracy and continuity of the navigation service.

[0048] It should be noted that the navigation method provided in the embodiment of the present application can be executed by a navigation device or a control module in the navigation device for executing the navigation method. In the embodiment of the present application, the navigation device provided in the embodiment of the present application is described by taking the execution of the navigation method by the navigation device as an example.

[0049] Figure 2 FIG. 1 is a schematic diagram of the structure of a navigation device according to an embodiment of the present application. Figure 2 As shown, the navigation device 2000 of the embodiment of the present application may include: an acquisition module 2100 , a determination module 2200 and a generation module 2300 .

[0050] The acquisition module 2100 is used to acquire the traffic information of the target area; the distance between the target area and the area where the electronic device is currently located is less than the set distance; the traffic information at least includes the geographical location information and the corresponding GPS signal strength.

[0051] The determination module 2200 is used to determine the area type of the target area according to the geographical location information and the corresponding GPS signal strength.

[0052] The generating module 2300 is used to generate navigation information according to the area type.

[0053] In one embodiment, when the area type of the target area is the first type of area type, the generation module 2300 is specifically used to: based on the communication connection with the cloud server, obtain and cache the road information of the target area from the cloud server; when driving into the target area, generate the navigation information based on the cached road information.

[0054] In one embodiment, when the area type of the target area is the second type of area type, the generation module 2300 is specifically used to: receive GPS information through a GPS signal amplifier when driving into the target area and the mobile network signal strength is less than a first threshold; and generate the navigation information based on the GPS information.

[0055] In one embodiment, when the area type of the target area is the second type of area type, the generation module 2300 is specifically used to: when driving into the target area and the mobile network signal strength is greater than a second threshold, obtain navigation information of the target area from the cloud server based on the communication connection with the cloud server.

[0056] In one embodiment, when the area type of the target area is the third category area type, the generation module 2300 is specifically used to: when driving into the target area, control the movable GPS module to move along a preset path to obtain GPS information; and generate the navigation information according to the GPS information obtained by the movable GPS module.

[0057] In one embodiment, the acquisition module 2100 is specifically used to: acquire the traffic information of the target area from the information database in the cloud server based on the communication connection with the cloud server; the information database is pre-constructed according to the geographic location information and the corresponding GPS signal strength.

[0058] The navigation device of this embodiment is provided with an acquisition module for acquiring the road condition information of the target area; a determination module for determining the area type of the target area according to the geographical location information and the corresponding GPS signal strength; and a generation module for generating navigation information according to the area type. Thus, the area type corresponding to the target area is determined by the road condition information of the target area acquired in advance, and the navigation information in the target area is generated in different ways according to different area types, which can avoid the problem that the navigation service cannot be used in a specific scenario, and ensure the accuracy and continuity of the navigation service.

[0059] The navigation device in the embodiment of the present application may be a device, or a component, integrated circuit, or chip in a terminal. The device may be a mobile electronic device. Exemplarily, the mobile electronic device may be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc., which is not specifically limited in the embodiment of the present application.

[0060] The navigation device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0061] The navigation device provided in the embodiment of the present application can achieve Figure 1 To avoid repetition, the various processes implemented by the method embodiment are not described here.

[0062] Alternatively, if Figure 3 As shown, the embodiment of the present application also provides an electronic device 3000, including a processor 3100, a memory 3200, a program or instruction stored in the memory 3200 and executable on the processor 5100, and the program or instruction is executed by the processor 3100 to implement the above Figure 1 The various processes of the navigation method embodiment shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0063] It should be noted that the electronic device in the embodiments of the present application includes the mobile electronic device described above.

[0064] Figure 4 A schematic diagram of the hardware structure of an electronic device to implement an embodiment of the present application.

[0065] The electronic device 400 includes but is not limited to components such as a radio frequency unit 401 , a network module 402 , an audio output unit 403 , an input unit 404 , a sensor 405 , a display unit 406 , a user input unit 407 , an interface unit 408 , a memory 409 , and a processor 410 .

[0066] Those skilled in the art will appreciate that the electronic device 400 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 410 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Figure 4 The electronic device structure shown in the figure does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0067] Among them, the processor 410 can be used to obtain traffic information of a target area; the distance between the target area and the area where the electronic device is currently located is less than a set distance; the traffic information includes at least geographic location information and corresponding GPS signal strength; based on the geographic location information and the corresponding GPS signal strength, determine the area type of the target area; and generate navigation information based on the area type.

[0068] In one embodiment, when the area type of the target area is the first type of area type, the processor 410 is specifically used to: based on the communication connection with the cloud server, obtain and cache the road information of the target area from the cloud server; when driving into the target area, generate the navigation information based on the cached road information.

[0069] In one embodiment, when the area type of the target area is the second area type, the processor 410 is specifically used to: receive GPS information through a GPS signal amplifier when driving into the target area and the mobile network signal strength is less than a first threshold; and generate the navigation information based on the GPS information.

[0070] In one embodiment, when the area type of the target area is the second type of area, the processor 410 is specifically used to: when driving into the target area and the mobile network signal strength is greater than a second threshold, obtain navigation information of the target area from the cloud server based on the communication connection with the cloud server.

[0071] In one embodiment, when the area type of the target area is the third category area type, the processor 410 is specifically used to: when driving into the target area, control the movable GPS module to move along a preset path to obtain GPS information; and generate the navigation information according to the GPS information obtained by the movable GPS module.

[0072] In one embodiment, the processor 410 is specifically used to: obtain the traffic information of the target area from the information database in the cloud server based on the communication connection with the cloud server; the information database is pre-constructed according to the geographic location information and the corresponding GPS signal strength.

[0073] The electronic device of the embodiment of the present application can be used to execute the technical solution of the above method embodiment, and its implementation principle and technical effect are similar and will not be repeated here.

[0074] It should be understood that in the embodiment of the present application, the input unit 404 may include a graphics processor (GPU) 4041 and a microphone 4042, and the graphics processor 4041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 406 may include a display panel 4061, and the display panel 4061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 407 includes a touch panel 4071 and other input devices 4072. The touch panel 4071 is also called a touch screen. The touch panel 4071 may include two parts: a touch detection device and a touch controller. Other input devices 4072 may include but are not limited to a physical keyboard, a function key (such as a volume control button, a switch button, etc.), a trackball, a mouse, and a joystick, which will not be repeated here. The memory 409 can be used to store software programs and various data, including but not limited to applications and operating systems. The processor 410 can integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, the user interface, and the application program, etc., and the modem processor mainly processes wireless communication. It is understandable that the above-mentioned modem processor may not be integrated into the processor 410.

[0075] The embodiment of the present application also provides a readable storage medium on which a program or instruction is stored. When the program or instruction is executed by a processor, the above Figure 1 The various processes of the navigation method embodiment shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0076] The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0077] The present application also provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the above Figure 1 The various processes of the navigation method embodiment shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0078] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0079] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0080] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0081] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A navigation method, characterized in that: The method comprises: Acquire traffic information of a target area; the distance between the target area and the area where the electronic device is currently located is less than a set distance; the traffic information at least includes geographical location information and corresponding GPS signal strength; Determining the area type of the target area according to the geographical location information and the corresponding GPS signal strength; According to different area types, different navigation schemes are selected to generate navigation information; Among them, the area types include a first area type, a second area type and a third area type. In the first area type, the current area has no GPS signal coverage at all; in the second area type, the GPS signal obtained by the navigation device is weak; in the third area type, the navigation device cannot obtain the GPS signal at the current position or current angle, but can obtain the GPS signal at other positions or angles. The different navigation schemes include: obtaining and caching road information of the target area from a cloud server; receiving GPS information through a GPS signal amplifier; obtaining navigation information of the target area from a cloud server; and controlling a movable GPS module to move along a preset path.

2. The method according to claim 1, characterized in that In a case where the area type of the target area is the first area type, selecting different navigation schemes to generate navigation information according to different area types includes: Based on the communication connection with the cloud server, obtaining the road information of the target area from the cloud server and caching it; When the vehicle enters the target area, the navigation information is generated based on the cached road information.

3. The method according to claim 1, characterized in that In the case where the area type of the target area is the second area type, selecting different navigation schemes to generate navigation information according to different area types includes: When the vehicle enters the target area and the mobile network signal strength is less than a first threshold, receiving GPS information through a GPS signal amplifier; The navigation information is generated based on the GPS information.

4. The method according to claim 1, characterized in that: In the case where the area type of the target area is the second area type, selecting different navigation schemes to generate navigation information according to different area types includes: When the vehicle enters the target area and the mobile network signal strength is greater than a second threshold, navigation information of the target area is obtained from the cloud server based on a communication connection with the cloud server.

5. The method according to claim 1, characterized in that: In the case where the area type of the target area is the third type of area, generating navigation information for selecting different navigation schemes according to different area types includes: When driving into the target area, controlling the movable GPS module to move along a preset path to obtain GPS information; The navigation information is generated according to the GPS information acquired by the movable GPS module.

6. The method according to claim 1, characterized in that The step of obtaining the traffic information of the target area includes: Based on the communication connection with the cloud server, the traffic information of the target area is obtained from the information database in the cloud server; the information database is pre-constructed according to the geographical location information and the corresponding GPS signal strength.

7. A navigation device, characterized in that: The device comprises: An acquisition module is used to acquire traffic information of a target area; the distance between the target area and the area where the electronic device is currently located is less than a set distance; the traffic information at least includes geographical location information and corresponding GPS signal strength; A determination module, used to determine the area type of the target area according to the geographical location information and the corresponding GPS signal strength; A generation module, used to select different navigation schemes to generate navigation information according to different area types; Among them, the area types include a first area type, a second area type and a third area type. In the first area type, the current area has no GPS signal coverage at all; in the second area type, the GPS signal obtained by the navigation device is weak; in the third area type, the navigation device cannot obtain the GPS signal at the current position or current angle, but can obtain the GPS signal at other positions or angles. The different navigation schemes include: obtaining and caching road information of the target area from a cloud server; receiving GPS information through a GPS signal amplifier; obtaining navigation information of the target area from a cloud server; and controlling a movable GPS module to move along a preset path.

8. The device according to claim 7, characterized in that When the area type of the target area is the first area type, the generating module is specifically used to: Based on the communication connection with the cloud server, obtaining the road information of the target area from the cloud server and caching it; When the vehicle enters the target area, the navigation information is generated based on the cached road information.

9. The device according to claim 7, characterized in that When the area type of the target area is the second area type, the generating module is specifically used to: When the vehicle enters the target area and the mobile network signal strength is greater than a second threshold, navigation information of the target area is obtained from the cloud server based on a communication connection with the cloud server.

10. The device according to claim 7, characterized in that When the area type of the target area is the third area type, the generating module is specifically used to: When driving into the target area, controlling the movable GPS module to move along a preset path to obtain GPS information; The navigation information is generated according to the GPS information acquired by the movable GPS module.

Images