A height segment coding system based on true height

Abstract

This invention relates to altitude coding, specifically to an altitude segment coding system based on true altitude. The system includes an altitude benchmark coding module, which determines the core benchmark for altitude coding and ensures compatibility with mainstream international aviation altitude standards; a multi-level altitude coding management module, which divides altitude segments and constructs corresponding coding systems based on the regulatory needs and operational characteristics of low-altitude flight; an altitude coding principle and administrative authority control module, which formulates altitude coding principles and establishes matching rules between administrative levels and altitude segments to ensure the scientific and practical nature of the coding system; and an integrated air-space-ground altitude coding fusion module, responsible for the application and implementation of the coding system, deeply integrating altitude coding with planar spatial coding and integrating it into relevant systems to improve the safety and management efficiency of low-altitude flight. The technical solution provided by this invention can effectively overcome the difficulties in airspace supervision and the high risks associated with low-altitude flight in existing technologies.

Description

Technical Field

[0001] This invention relates to height coding, and more specifically to a height segment coding system based on true height. Background Technology

[0002] In the field of low-altitude flight, the lack of unified altitude standards and standardized altitude markings across different levels of airspace management have become key factors restricting the development of low-altitude transportation. Currently, airspace management largely relies on standards developed by local governments, leading to confusion in altitude markings across different departments or application scenarios within the same region. This increases the difficulty of airspace supervision and the risks associated with low-altitude flights. Furthermore, differences in international low-altitude standards further exacerbate the complexity of cross-border flights and airspace supervision, limiting the international development of low-altitude transportation.

[0003] Currently, although organizations such as the International Civil Aviation Organization (ICAO) have formulated a series of low-altitude flight rules, there are still shortcomings in the division and marking of specific altitude segments, making it difficult to meet the needs of the rapid development of low-altitude traffic. Furthermore, with the widespread application of low-altitude aircraft such as drones, higher requirements are placed on the accuracy, understandability, and compatibility of altitude markings.

[0004] Therefore, developing a true altitude-based altitude segment coding system to standardize altitude markings nationwide and even internationally is of great significance for improving the safety and management efficiency of low-altitude flights and promoting the international development of low-altitude transportation. This solution is proposed precisely to address this technical need. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a true altitude-based altitude segment coding system, which can effectively overcome the difficulties in airspace supervision and the high risks of low-altitude flight in the existing technology.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A height segment coding system based on true altitude includes a height reference coding module, a multi-level height coding management module, a height coding principle and administrative authority control module, and an integrated air-space-ground height coding fusion module;

[0010] The altitude reference coding module determines the core reference for altitude coding and ensures compatibility with mainstream international aviation altitude standards.

[0011] The multi-level altitude coding management module divides altitude segments and constructs corresponding coding systems based on the regulatory requirements and operational characteristics of low-altitude flights.

[0012] The system establishes a high-level coding principle and an administrative authority control module, which formulates high-level coding principles and establishes matching rules between administrative levels and high-level segments to ensure the scientific and practical nature of the coding system.

[0013] The air-space-ground integrated altitude coding fusion module is responsible for the application and implementation of the coding system. It deeply integrates altitude coding with planar spatial coding and integrates it into relevant systems to improve the safety and management efficiency of low-altitude flight.

[0014] Preferably, the altitude reference coding module includes a reference determination unit, an international benchmarking unit, and a reference conversion unit;

[0015] The reference determination unit uses true altitude as the core reference for altitude coding. True altitude is the vertical height of the aircraft above the Earth's surface, i.e., the altitude above the ground.

[0016] The international benchmarking unit references the 400-foot AGL limit of the US FAA Part 107, the 120m AGL limit of the EU EASA, and the low-altitude definition below 150m of the International Civil Aviation Organization (ICAO) to verify the international acceptance of true altitude as the altitude coding benchmark. Through comparative analysis, the compatibility and universality of the coding system are ensured internationally.

[0017] The reference conversion unit establishes the conversion relationship between true altitude and altitude, air pressure, and geodetic height, and realizes the interoperability of different reference altitude data through formula calculation.

[0018] Preferably, the reference conversion unit establishes the conversion relationship between true altitude and altitude, air pressure, and geodetic height, and realizes the interoperability of different reference altitude data through formula calculation, including:

[0019] By combining parameters including airport elevation and air pressure, the air pressure high is converted into true altitude, adapting to existing aviation data application scenarios.

[0020] Preferably, the multi-level height coding management module includes a segmentation unit and a coding design unit;

[0021] Based on the requirements of fine-grained management of low-altitude airspace and efficient passage of high-altitude airspace, the segment division unit adopts a semantically driven segment division principle, dividing the true altitude into six height segments and constructing a corresponding coding system. The width of each segment increases with the height to meet the management needs of different altitudes.

[0022] The coding design unit designs a single-character letter code for each height segment. The code is short, easy to understand, and can be verbally described, making it easy for manual recognition and quick system parsing.

[0023] Preferably, the segment division unit, based on the requirements of low-altitude fine-grained management and high-altitude passage efficiency, adopts a semantic-driven segment division principle to divide the true altitude into six altitude segments, constructing a corresponding coding system. The width of each segment increases with altitude to meet the management needs at different altitudes, including:

[0024] G segment: Ground, near the ground / roof, height range 0~30m, suitable for community / building level ground operations;

[0025] Section L: Low, between buildings / street valleys, with a height range of 30~60m, suitable for community-level drone delivery and patrol;

[0026] Section A: Altitude, the standard low-altitude layer in cities, with an altitude range of 60~120m, suitable for street-level and building-to-building drone operations;

[0027] M segment: Medium, low-to-medium altitude passage layer, altitude range 120~300m, suitable for county-level drone dispatching;

[0028] H segment: High, high-altitude passage layer, altitude range 300~1000m, suitable for city-level medium and low altitude airspace planning;

[0029] X segment: eXtreme, ultra-high altitude layer, with an altitude range of not less than 1000m, suitable for national / provincial-level all-area strategic management.

[0030] Preferably, the high-level coding principle and administrative authority control module includes a coding principle formulation module and a matching rule establishment module;

[0031] The coding principle formulation unit formulated four major coding principles, including the short character principle, the comprehensibility principle, the cross-level uniformity principle, and the administrative level decoupling principle.

[0032] The matching rule establishment unit establishes matching rules between administrative levels and height segments based on the principle of decoupling administrative levels, ensuring the scientific and practical nature of the coding system.

[0033] Preferably, the coding principle formulation unit formulates four high-level coding principles, including the short character principle, the comprehensibility principle, the cross-level uniformity principle, and the administrative level decoupling principle, which are as follows:

[0034] Short character principle: Each height segment is identified by a single letter to minimize the encoding length;

[0035] The principle of understandability: the encoded letters are strongly semantically associated with the high-order segments, making them easy to remember and spread;

[0036] Cross-level unification principle: The meaning and coding of high-level segments are completely unified across the country to avoid regional ambiguity and ensure the consistency and authority of coding;

[0037] The principle of decoupling from administrative levels: the height segment itself is independent of the administrative level, and the administrative level only restricts the height segment usage rights of the corresponding entity, so as to achieve flexible management.

[0038] Preferably, the matching rule establishment unit establishes matching rules between administrative levels and height segments based on the principle of administrative level decoupling, ensuring the scientific and practical nature of the coding system, including:

[0039] National and provincial authorities have full altitude access rights for the G~X airspace segment, which are used for comprehensive airspace management and strategic planning.

[0040] The city-level authorities have the right to use the G~H altitude zone, focusing on the management of low and medium altitude airspace.

[0041] District and county-level authorities have access to the G~M altitude range and are responsible for drone operations within urban areas.

[0042] The street-level authorities have access to the G~A altitude zone and can manage drone activities between buildings in the street.

[0043] The community-level access is granted to the G~L altitude range, suitable for low-altitude drone operations within the community.

[0044] Community-level and building-level airspace management only has access to the G-segment height zone to ensure the safety of ground and rooftop operations and to achieve hierarchical and orderly control of airspace.

[0045] Preferably, the integrated air-space-ground altitude coding fusion module includes an integrated identification unit, a system integration unit, and a navigation support unit;

[0046] The integrated identification unit deeply integrates altitude coding and planar spatial coding to form an integrated identification system of "planar coding and altitude coding," enabling precise positioning and management of airspace.

[0047] The system integration unit integrates the coding system into the UAV scheduling system, which can quickly identify the permitted altitude range of an area through altitude coding and achieve accurate airspace positioning by combining it with the BeiDou grid location code; the coding system is also integrated into the airspace supervision system, which allows regulatory authorities to quickly determine the legal flight altitude range of different entities based on altitude segment usage permissions, thereby improving supervision efficiency;

[0048] The navigation support unit integrates the coding system into the navigation system, including the low-altitude Fuxi map, to provide standardized altitude navigation basis for vehicle-machine collaborative operations and autonomous flight of UAVs. This solves the problems of vague traditional altitude markings and low management efficiency, and promotes the standardized and intelligent development of low-altitude flight.

[0049] (III) Beneficial Effects

[0050] Compared with the prior art, the height segment coding system based on true height provided by the present invention has the following beneficial effects:

[0051] 1) Achieve high standardization of labeling to improve management compatibility

[0052] By using the altitude reference coding module, true altitude is clearly defined as the core reference for altitude coding, and benchmarking and verification are carried out with reference to mainstream international aviation altitude standards to ensure the compatibility and universality of the coding system. At the same time, by establishing the conversion relationship between true altitude and other reference altitudes (such as altitude, barometric pressure, and geodetic height), the interoperability of different reference altitude data is realized, solving the problem of inconsistent traditional altitude references. This standardized management approach ensures consistency in altitude markings across different regions, departments, and internationally, reducing the difficulty and cost of airspace supervision and improving management efficiency.

[0053] 2) Divide the airspace into altitude zones and optimize airspace resource allocation.

[0054] The multi-level altitude coding management module, based on the regulatory needs and operational characteristics of low-altitude flights, adopts a semantically driven segmentation principle to divide true altitude into six altitude segments and establish a corresponding coding system. This refined division method not only meets the needs of precise low-altitude management but also takes into account the efficiency of high-altitude passage, enabling airspace resources to be rationally allocated according to the actual needs of different altitude segments. For example, low-altitude segments such as the ground / rooftop near-field (G segment) and the inter-building / street valley level (L segment) can be prioritized for drone delivery, patrol, and other operations; while the high-altitude passage level (H segment) and the ultra-high-altitude level (X segment) can be used for higher-level airspace management and strategic planning. Through this optimized allocation, the overall utilization rate of airspace resources is effectively improved.

[0055] 3) Safety assurance and intelligent management to promote the standardized development of low-altitude flight.

[0056] The altitude coding principles, along with the administrative authority control module and the integrated air-space-ground altitude coding fusion module, jointly construct a safety assurance and intelligent management system for low-altitude flight. By formulating scientific and reasonable coding principles and matching rules, the practicality and authority of the coding system are ensured. At the same time, the deep integration of altitude coding with planar spatial coding forms an integrated identifier, enabling precise airspace positioning and management. Furthermore, the coding system is integrated into UAV scheduling systems, airspace monitoring systems, and navigation systems, providing standardized altitude navigation basis for low-altitude flight and solving the problems of vague traditional altitude markings and low management efficiency. These measures have jointly promoted the standardized and intelligent development of low-altitude flight and enhanced its safety assurance capabilities. Attached Figure Description

[0057] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0058] Figure 1 This is a schematic diagram of the system of the present invention. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0060] The core of this invention lies in: focusing on the standardization of height marking, using true height (height above the ground) as the core benchmark for height coding, and designing a unified, easy-to-understand, and internationally compatible height segment coding system to solve the technical pain points of inconsistent traditional height marking benchmarks, disconnect between administrative levels and height management, and poor compatibility with international standards.

[0061] The following describes the specific functional modules of the height segment coding system based on true altitude provided by this invention, using concrete examples (such as...). Figure 1 (As shown) and its technical effects. The system's functional modules include: a height reference coding module, a multi-level height coding management module, a height coding principle and administrative authority control module, and an integrated air-space-ground height coding fusion module;

[0062] The altitude reference coding module determines the core reference for altitude coding and ensures compatibility with mainstream international aviation altitude standards.

[0063] The multi-level altitude coding management module divides altitude segments and constructs corresponding coding systems based on the regulatory requirements and operational characteristics of low-altitude flights.

[0064] The system establishes a high-level coding principle and an administrative authority control module, which formulates high-level coding principles and establishes matching rules between administrative levels and high-level segments to ensure the scientific and practical nature of the coding system.

[0065] The air-space-ground integrated altitude coding fusion module is responsible for the application and implementation of the coding system. It deeply integrates altitude coding with planar spatial coding and integrates it into relevant systems to improve the safety and management efficiency of low-altitude flight.

[0066] I. Height Reference Coding Module

[0067] The height reference coding module includes a reference determination unit, an international benchmarking unit, and a reference conversion unit;

[0068] The reference determination unit uses true altitude as the core reference for altitude coding (this reference complies with the requirements of the General Operations and Flight Rules (CCAR-91-R4) and is also aligned with international civil aviation standards). True altitude is the vertical height of an aircraft above the Earth's surface (including all ground features such as buildings and structures), i.e., the height above the ground.

[0069] The international benchmarking unit references the 400-foot AGL limit of the US FAA Part 107, the 120m AGL limit of the EU EASA, and the low-altitude definition below 150m of the International Civil Aviation Organization (ICAO) to verify the international acceptance of true altitude as the altitude coding benchmark. Through comparative analysis, the compatibility and universality of the coding system are ensured internationally.

[0070] The reference conversion unit establishes the conversion relationship between true altitude and altitude, air pressure, and geodetic height, and realizes the interoperability of different reference altitude data through formula calculation.

[0071] Specifically, the reference conversion unit establishes the conversion relationship between true altitude and altitude, air pressure, and geodetic height, and realizes the interoperability of different reference altitude data through formula calculation, including:

[0072] By combining parameters including airport elevation and air pressure, the air pressure high is converted into true altitude, adapting to existing aviation data application scenarios.

[0073] The aforementioned technical solution, through its altitude reference coding module, clearly defines true altitude as the core reference for altitude coding and verifies it against mainstream international aviation altitude standards, ensuring the compatibility and universality of the coding system. Simultaneously, by establishing conversion relationships between true altitude and other reference altitudes (such as altitude of elevation, atmospheric pressure, and geodetic height), it achieves interoperability of different reference altitude data, resolving the problem of inconsistent traditional altitude references. This standardized management approach ensures consistency in altitude markings across different regions, departments, and internationally, reducing the difficulty and cost of airspace supervision and improving management efficiency.

[0074] II. Multi-level Height Coding Management Module

[0075] The multi-level high-level coding management module includes a segmentation unit and a coding design unit;

[0076] Based on the requirements of fine-grained management of low-altitude airspace and efficient passage of high-altitude airspace, the segment division unit adopts a semantically driven segment division principle, dividing the true altitude into six height segments and constructing a corresponding coding system. The width of each segment increases with the height to meet the management needs of different altitudes.

[0077] The coding design unit designs a single-character letter code for each height segment. The code is short, easy to understand, and can be verbally described, making it easy for manual recognition and quick system parsing.

[0078] Specifically, based on the requirements of fine-grained low-altitude management and high-altitude passage efficiency, the segment division unit adopts a semantically driven segment division principle, dividing true altitude into six height segments and constructing a corresponding coding system. The width of each segment increases with altitude to meet the management needs at different altitudes, including:

[0079] G segment: Ground, near the ground / roof, height range 0~30m, suitable for community / building level ground operations;

[0080] Section L: Low, between buildings / street valleys, with a height range of 30~60m, suitable for community-level drone delivery and patrol;

[0081] Section A: Altitude, the standard low-altitude layer in cities, with an altitude range of 60~120m, suitable for street-level and building-to-building drone operations;

[0082] M segment: Medium, low-to-medium altitude passage layer, altitude range 120~300m, suitable for county-level drone dispatching;

[0083] H segment: High, high-altitude passage layer, altitude range 300~1000m, suitable for city-level medium and low altitude airspace planning;

[0084] X segment: eXtreme, ultra-high altitude layer, with an altitude range of not less than 1000m, suitable for national / provincial-level all-area strategic management.

[0085] The aforementioned technical solution employs a multi-level altitude coding management module that, based on the regulatory requirements and operational characteristics of low-altitude flight, adopts a semantically driven segmentation principle to divide true altitude into six altitude segments and establishes a corresponding coding system. This refined segmentation method not only meets the needs of precise low-altitude management but also takes into account high-altitude passage efficiency, enabling airspace resources to be rationally allocated according to the actual needs of different altitude segments. For example, low-altitude segments such as the ground / rooftop near-field (G segment) and the inter-building / street valley level (L segment) can be prioritized for drone delivery, patrol, and other operations; while the high-altitude passage level (H segment) and the ultra-high-altitude level (X segment) can be used for higher-level airspace management and strategic planning. Through this optimized configuration, the overall utilization rate of airspace resources is effectively improved.

[0086] III. High-level coding principles and administrative authority control module

[0087] The high-level coding principles and administrative authority control module includes a coding principle formulation module and a matching rule establishment module;

[0088] The coding principle formulation unit formulated four major coding principles, including the short character principle, the comprehensibility principle, the cross-level uniformity principle, and the administrative level decoupling principle.

[0089] The matching rule establishment unit establishes matching rules between administrative levels and height segments based on the principle of decoupling administrative levels, ensuring the scientific and practical nature of the coding system.

[0090] Specifically, the coding principle formulation unit established four high-level coding principles, including the short character principle, the comprehensibility principle, the cross-level consistency principle, and the administrative level decoupling principle.

[0091] Short character principle: Each height segment is identified by a single letter to minimize the encoding length;

[0092] The principle of understandability: the encoded letters are strongly semantically associated with the high-order segments, making them easy to remember and spread;

[0093] Cross-level unification principle: The meaning and coding of high-level segments are completely unified across the country to avoid regional ambiguity and ensure the consistency and authority of coding;

[0094] The principle of decoupling from administrative levels: the height segment itself is independent of the administrative level, and the administrative level only restricts the height segment usage rights of the corresponding entity, so as to achieve flexible management.

[0095] Specifically, the matching rule establishment unit establishes matching rules for administrative levels and height segments based on the principle of decoupling administrative levels, ensuring the scientific and practical nature of the coding system, including:

[0096] National and provincial authorities have full altitude access rights for the G~X airspace segment, which are used for comprehensive airspace management and strategic planning.

[0097] The city-level authorities have the right to use the G~H altitude zone, focusing on the management of low and medium altitude airspace.

[0098] District and county-level authorities have access to the G~M altitude range and are responsible for drone operations within urban areas.

[0099] The street-level authorities have access to the G~A altitude zone and can manage drone activities between buildings in the street.

[0100] The community-level access is granted to the G~L altitude range, suitable for low-altitude drone operations within the community.

[0101] Community-level and building-level airspace management only has access to the G-segment height zone to ensure the safety of ground and rooftop operations and to achieve hierarchical and orderly control of airspace.

[0102] IV. Integrated Space-Air-Ground Coding Fusion Module

[0103] The integrated air-space-ground coding fusion module includes an integrated identification unit, a system integration unit, and a navigation support unit;

[0104] The integrated identification unit deeply integrates altitude coding and planar spatial coding to form an integrated identification of "planar coding and altitude coding" (such as GZHZ23-4 representing the 400~500m altitude layer of a certain area in Haizhu District, Guangzhou), realizing precise positioning and management of airspace;

[0105] The system integration unit integrates the coding system into the UAV scheduling system, which can quickly identify the permitted altitude range of an area through altitude coding and achieve accurate airspace positioning by combining it with the BeiDou grid location code; the coding system is also integrated into the airspace supervision system, which allows regulatory authorities to quickly determine the legal flight altitude range of different entities based on altitude segment usage permissions, thereby improving supervision efficiency;

[0106] The navigation support unit integrates the coding system into the navigation system, including the low-altitude Fuxi map, to provide standardized altitude navigation basis for vehicle-machine collaborative operations and autonomous flight of UAVs. This solves the problems of vague traditional altitude markings and low management efficiency, and promotes the standardized and intelligent development of low-altitude flight.

[0107] The aforementioned technical solutions, including the altitude coding principle, the administrative authority control module, and the integrated air-ground altitude coding fusion module, jointly construct a safety assurance and intelligent management system for low-altitude flight. By formulating scientific and reasonable coding principles and matching rules, the practicality and authority of the coding system are ensured. Simultaneously, the deep integration of altitude coding with planar spatial coding forms an integrated identifier, enabling precise airspace positioning and management. Furthermore, the coding system is integrated into UAV scheduling systems, airspace monitoring systems, and navigation systems, providing standardized altitude navigation data for low-altitude flight and solving the problems of vague traditional altitude markings and low management efficiency. These measures collectively promote the standardized and intelligent development of low-altitude flight and enhance its safety assurance capabilities.

[0108] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A height segment coding system based on true altitude, characterized in that: It includes a height baseline coding module, a multi-level height coding management module, a height coding principle and administrative authority control module, and an integrated air-space-ground height coding fusion module; The altitude reference coding module determines the core reference for altitude coding and ensures compatibility with mainstream international aviation altitude standards; The multi-level altitude coding management module divides altitude segments and constructs corresponding coding systems based on the regulatory requirements and operational characteristics of low-altitude flights. The module for high-level coding principles and administrative authority control establishes high-level coding principles and sets matching rules between administrative levels and high-level segments to ensure the scientific and practical nature of the coding system. The air-space-ground integrated altitude coding fusion module is responsible for the application and implementation of the coding system. It deeply integrates altitude coding with planar spatial coding and integrates it into relevant systems to improve the safety and management efficiency of low-altitude flight.

2. The height segment coding system based on true height according to claim 1, characterized in that: The altitude reference coding module includes a reference determination unit, an international benchmarking unit, and a reference conversion unit; The reference determination unit uses true altitude as the core reference for altitude coding. True altitude is the vertical height of the aircraft above the Earth's surface, i.e., the altitude above the ground. The international benchmarking unit references the 400-foot AGL limit of the US FAA Part 107, the 120m AGL limit of the EU EASA, and the low-altitude definition below 150m of the International Civil Aviation Organization (ICAO) to verify the international acceptance of true altitude as the altitude coding benchmark. Through comparative analysis, the compatibility and universality of the coding system are ensured internationally. The reference conversion unit establishes the conversion relationship between true altitude and altitude, air pressure, and geodetic height, and realizes the interoperability of different reference altitude data through formula calculation.

3. The height segment coding system based on true height according to claim 2, characterized in that: The reference conversion unit establishes the conversion relationship between true altitude and altitude, air pressure, and geodetic height, and realizes the interoperability of different reference altitude data through formula calculation, including: By combining parameters including airport elevation and air pressure, the air pressure high is converted into true altitude, adapting to existing aviation data application scenarios.

4. The height segment coding system based on true height according to claim 1, characterized in that: The multi-level height coding management module includes a segmentation unit and a coding design unit; Based on the requirements of fine-grained management of low-altitude airspace and efficient passage of high-altitude airspace, the segment division unit adopts a semantically driven segment division principle, dividing the true altitude into six height segments and constructing a corresponding coding system. The width of each segment increases with the height to meet the management needs of different altitudes. The coding design unit designs a single-character letter code for each height segment. The code is short, easy to understand, and can be verbally described, making it easy for manual recognition and quick system parsing.

5. The height segment coding system based on true height according to claim 4, characterized in that: The segmentation unit, based on the requirements of fine-grained low-altitude management and high-altitude passage efficiency, adopts a semantically driven segmentation principle to divide true altitude into six height segments and construct a corresponding coding system. The width of each segment increases with altitude to meet the management needs at different altitudes, including: G segment: Ground, near the ground / roof, height range 0~30m, suitable for community / building level ground operations; Section L: Low, between buildings / street valleys, with a height range of 30~60m, suitable for community-level drone delivery and patrol; Section A: Altitude, the standard low-altitude layer in cities, with an altitude range of 60~120m, suitable for street-level and building-to-building drone operations; M segment: Medium, low-to-medium altitude passage layer, altitude range 120~300m, suitable for county-level drone dispatching; H segment: High, high-altitude passage layer, altitude range 300~1000m, suitable for city-level medium and low altitude airspace planning; X segment: eXtreme, ultra-high altitude layer, with an altitude range of not less than 1000m, suitable for national / provincial-level all-area strategic management.

6. The height segment coding system based on true height according to claim 1, characterized in that: The high-level coding principle and administrative authority control module includes a coding principle formulation module and a matching rule establishment module; The coding principle formulation unit formulated four major coding principles, including the short character principle, the comprehensibility principle, the cross-level uniformity principle, and the administrative level decoupling principle. The matching rule establishment unit establishes matching rules between administrative levels and height segments based on the principle of decoupling administrative levels, ensuring the scientific and practical nature of the coding system.

7. The height segment coding system based on true height according to claim 6, characterized in that: The coding principle formulation unit formulated four high-level coding principles, including the short character principle, the comprehensibility principle, the cross-level consistency principle, and the administrative level decoupling principle. Short character principle: Each height segment is identified by a single letter to minimize the encoding length; The principle of understandability: the encoded letters are strongly semantically associated with the high-order segments, making them easy to remember and spread; Cross-level unification principle: The meaning and coding of high-level segments are completely unified across the country to avoid regional ambiguity and ensure the consistency and authority of coding; The principle of decoupling from administrative levels: the height segment itself is independent of the administrative level, and the administrative level only restricts the height segment usage rights of the corresponding entity, so as to achieve flexible management.

8. The height segment coding system based on true height according to claim 7, characterized in that: The matching rule establishment unit establishes matching rules between administrative levels and height segments based on the principle of administrative level decoupling, ensuring the scientific and practical nature of the coding system, including: National and provincial authorities have full altitude access rights for the G~X airspace segment, which are used for comprehensive airspace management and strategic planning. The city-level authorities have the right to use the G~H altitude zone, focusing on the management of low and medium altitude airspace. District and county-level authorities have access to the G~M altitude range and are responsible for drone operations within urban areas. The street-level authorities have access to the G~A altitude zone and can manage drone activities between buildings in the street. The community-level access is granted to the G~L altitude range, suitable for low-altitude drone operations within the community. Community-level and building-level airspace management only has access to the G-segment height zone to ensure the safety of ground and rooftop operations and to achieve hierarchical and orderly control of airspace.

9. The height segment coding system based on true altitude according to claim 1, characterized in that: The integrated air-space-ground coding fusion module includes an integrated identification unit, a system integration unit, and a navigation support unit. The integrated identification unit deeply integrates altitude coding and planar spatial coding to form an integrated identification system of "planar coding and altitude coding," enabling precise positioning and management of airspace. The system integration unit integrates the coding system into the UAV scheduling system, which can quickly identify the permitted altitude range of an area through altitude coding and achieve accurate airspace positioning by combining it with the BeiDou grid location code; the coding system is also integrated into the airspace supervision system, which allows regulatory authorities to quickly determine the legal flight altitude range of different entities based on altitude segment usage permissions, thereby improving supervision efficiency; The navigation support unit integrates the coding system into the navigation system, including the low-altitude Fuxi map, to provide standardized altitude navigation basis for vehicle-machine collaborative operations and autonomous flight of UAVs. This solves the problems of vague traditional altitude markings and low management efficiency, and promotes the standardized and intelligent development of low-altitude flight.

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