中國軍隊智慧戰場的衛星導航

現代英語：

The satellite navigation system, also known as the global satellite navigation system, is an air-based radio navigation and positioning system that can provide users with all-weather three-dimensional coordinates, speed and time information at any location on the earth’s surface or in near-Earth space.

The satellite navigation system is an important space infrastructure for mankind. It is an indispensable tool for a country’s national security and economic and social development. It has a profound impact on the form of war, combat style, and people’s production and lifestyle.

At present, there are four major global satellite navigation systems in the world, namely, the United States’ GPS, Russia’s GLONASS, Europe’s Galileo and China’s Beidou. Global competition in satellite navigation technology is becoming increasingly fierce.

Standing at a new starting point of profound changes in the world’s military, and looking at the future battlefield with a high degree of integration of informatization and intelligence, intelligent navigation systems will come into being and play an important role.

Satellite navigation becomes a “standard” element of the intelligent battlefield

The future intelligent battlefield will present the characteristics of high-tech warfare, which will comprehensively use intelligent weapons and means under information conditions, realize efficient command and control, and implement precise and flexible strikes. Satellite navigation technology can provide high-precision, all-weather, large-scale and multi-purpose positioning, navigation and timing services for various objects on land, sea, air and space.

Provide a unified time and space benchmark for systematic operations. For the intelligent battlefield, there are many linked elements and the situation changes rapidly, which requires accurate positioning of combat units to achieve intelligence reconnaissance, command and control, battlefield maneuvers, offensive and defensive operations, and support and guarantee under a unified time and space benchmark, ensuring that all elements of the entire battlefield form a coordinated organic whole.

The basic function of satellite navigation is to provide accurate time and space references for various combat elements. Without an accurate and unified time and space reference, the precise command of joint operations may be out of balance, combat operations may be out of control, and intelligence fusion and target identification cannot be achieved. If the time error is one hundredth of a second, a target locked by more than a dozen radars will become more than a dozen targets, and accurate defense and counterattack will not be possible.

Under a unified standard time and geographic coordinate system, satellite navigation provides precision guidance for various weapon platforms, fine frequency calibration for electronic warfare weapons, and all-weather positioning and navigation for individual combatants, significantly improving the coordination and strike effectiveness of joint firepower strikes.

Provide synchronous situation cognition for combat command and control. Accurately grasping the battlefield situation is the premise and basis for commanders to flexibly and accurately implement command and control. The satellite navigation system provides strong support for battlefield situation awareness.

Since the 1990s, the U.S. military has developed a “Blue Force Tracking” system based on GPS and satellite communications to build a precise command and control system. The “Blue Force Tracking” system has effectively supported the U.S. military in forming a networked information advantage on the ground battlefield and effectively solved the problem of “where are we, our friends, and our enemies?”

Relying on the two major services of navigation positioning and position reporting of the global satellite network, the military has realized battlefield situation monitoring and sharing, which has become an important means for the military to “know itself”. At the same time, it has optimized the combat operation process, realized the issuance of combat orders at the minute level, and accelerated the development of the military’s command and control mode towards “integration” and “flattening”.

Providing a tool to enhance the precision strike of weapons and ammunition. In the intelligent battlefield, precision-guided weapons have become the “trump card” that determines victory or defeat. Using the satellite navigation system, the flight process of the missile can be corrected throughout to ensure the accuracy of the hit. It can be said that the satellite navigation system is a tool to enhance the precision strike of weapon platforms.

In recent local wars, the proportion of GPS precision-guided weapons of the US military has continued to rise: 7.6% in the Gulf War in 1991, 35% in the Kosovo War in 1999, 60% in the Afghanistan War in 2001, 68.3% in the Iraq War in 2003, and 100% in the Syrian War in 2018.

Intelligent battlefield requires satellite navigation to have new “responsibilities”

As the core and cornerstone of the precise and unified space-time system, the modern satellite navigation system must take on new responsibilities in response to the development needs of future intelligent battlefields.

In the era of intelligence, new combat elements represented by “AI, cloud, network, group, and terminal” will reconstruct the battlefield ecology and completely change the winning mechanism of war. Satellite navigation services need to adapt to the characteristics of the intelligent battlefield with wider dimensions, higher precision, and stronger system.

Navigation positioning and timing have a wider range and higher accuracy. The current satellite navigation system has achieved coverage of the earth’s surface. However, on the intelligent battlefield, it needs to extend to deep space and under the sea. The combat time domain and air domain are wider, requiring the construction of a comprehensive service system covering land, sea, air and space, with unified standards, high efficiency and intelligence, to form time and space information coverage at all times and everywhere, and to achieve more powerful, safer and more reliable time and space service capabilities.

For example, in the intelligent battlefield, unmanned combat has become the basic form. Autonomous driving of unmanned vehicles, precision approach of drones, and measurement of intelligent missile positions all urgently need to be improved by an order of magnitude on the basis of existing navigation accuracy to ensure higher navigation integrity, faster first positioning time, and stronger cross-domain capabilities of land, sea, air, and space.

The military navigation confrontation system is more complete and more powerful. The means of navigation confrontation in the information age is a simple confrontation form based on signal energy enhancement and interference attack. Navigation in the intelligent era is intertwined with detection, perception, communication, command, and decision-making. It requires a navigation capability level with higher power and faster effectiveness in any region of the world, the ability to intelligently adjust navigation signals, and the development of multiple navigation means such as quantum navigation, pulsar navigation, and deep-sea navigation. It is necessary to integrate navigation methods with different principles, methods, and carriers to achieve navigation confrontation capabilities at the system level and system level.

The bandwidth of navigation information interaction is larger and the access is wider. In the intelligent era, the role of cyberspace in the combat system is gradually increasing, and it is integrated with the navigation space-time system. The navigation information and cyberspace system that provide space-time position will connect the scattered combat forces and combat elements into a whole, forming a networked and systematic combat capability. This requires support for ubiquitous perception, left-right collaboration, and reliable and reconfigurable navigation capabilities, support for highly reliable, highly anti-interference, and readily accessible signaling channels, and timely acquisition of required navigation auxiliary information such as geography, maps, and images. On this basis, the real integration of communication and navigation is realized, achieving the effect of “one domain combat, multi-domain support”.

Adapting to the needs of military intelligence development and promoting the construction of intelligent navigation system

Judging from the development trend of the world’s military powers, facing the future intelligent battlefield, intelligent navigation systems are gradually building a space-time reference network and navigation information service network that integrates the earth and the sky, with space-based, systematized, on-demand and cloud-based as the main characteristics, forming a comprehensive navigation, positioning and timing system with unified reference, seamless coverage, security and reliability, high efficiency and convenience, and strong practicality.

The core of the transformation from a basic navigation system to an intelligent navigation system is to upgrade from “positioning navigation service” to “intelligent navigation service”, and the focus is on achieving the following four aspects of transformation:

The space-time benchmark is shifting from relying on ground systems to autonomous space-time benchmark maintenance. The space-time benchmark maintenance equipment of the ground system will gradually be transferred to the satellite, and the satellite will be equipped with higher-precision optical clocks and astronomical measurement equipment to form a more stable and reliable space-based space benchmark through high-precision anchoring and laser intersatellite measurement. The use of intelligent navigation systems can make ordinary navigation positioning accuracy reach sub-meter level, the timing accuracy will be increased by about 5 times, and the precision positioning service can achieve fast convergence of centimeter-level accuracy. Intelligent navigation can fully support the cross-domain integration of combat platforms, the doubling of the effectiveness of distributed lethal weapons, and the precise navigation of the entire process of air-space integrated drones from cruising to precision approach.

The satellite power confrontation mode is transformed into a navigation system confrontation. In terms of navigation confrontation services, the traditional satellite power confrontation mode will no longer meet the needs of the intelligent battlefield. Navigation system confrontation is the only way for the development of intelligent equipment in order to enhance the ability of troops to quickly adapt to the battlefield environment. Specifically, it includes precise release of navigation performance, heterogeneous backup of constellations, and global hotspot mobility. The main features are intelligent navigation signals and flexible theater reinforcements. Based on controllable point beam energy enhancement technology, energy delivery in hotspot areas, enhanced area expansion, deception or blocking interference, and digital transmission service guarantee are realized. In a high-interference and blocking environment, ensure service continuity and accuracy, and gradually release strength as the war progresses.

The simple integration of communication and navigation will be transformed into integrated on-demand services. It will provide deeper and broader navigation information services, deeply integrate into the military information network, and provide high, medium and low-speed classified and hierarchical navigation information services to users on land, sea, air and space. Reuse the favorable conditions of global multiple continuous coverage of navigation satellites to meet users’ communication and navigation needs in a global range and in any posture, and realize high reliability and strong interference-resistant search and rescue, position reporting, and signaling transmission. The navigation satellite space-based network interacts with the ground network information to build inter-satellite and satellite-to-ground high-speed backbone networks. Through miniaturized laser terminals and enhanced space routers, a stable and reliable space network is formed, equipped with a complete and standardized protocol system to support the autonomous and intelligent operation of hybrid constellation networks.

The computing resources of payload modules are separated and transformed into cloud computing resources of constellation. It will provide more intelligent space-based cloud computing services and reliable space-based intelligent support for intelligent weapon platforms. The main features are virtualization of onboard hardware resources and balancing of task loads. Through the configuration of public onboard computing modules, large-capacity storage units, and high-speed bus networks on navigation satellites, a ubiquitous space network shared resource pool is formed. The powerful data processing capability can support the autonomous establishment and maintenance of space-based space-time benchmarks, intelligent maintenance of navigation signal quality, and autonomous management of space networks. At the same time, it can provide computing, push, and storage services for complex information such as spatial position for various high-end users in the sky, air, land, and sea.

(The author is an academician of the Chinese Academy of Engineering)

Above: Schematic diagram of satellite navigation system supporting operations.

現代國語：谭述森

中國軍網 國防部網

2021年11月12日 星期五

衛星導航系統，即全球衛星導航系統，是能在地球表面或近地空間任何地點，為使用者提供全天候三維座標和速度以及時間資訊的空基無線電導航定位系統。

衛星導航系統是人類重要的太空基礎設施，堪稱一個國家安全和經濟社會發展不可或缺的重器，對戰爭形態、作戰樣式和人們生產生活方式有深遠影響。

目前，全球有四大全球衛星導航系統，分別是美國的GPS、俄羅斯的格洛納斯、歐洲的伽利略和中國的北斗，衛星導航技術全球競爭日益激烈。

站在世界軍事深刻變革的新起點，瞭望資訊化智能化高度融合的未來戰場，智慧導航體系將應運而生，並發揮重要作用。

衛星導航成為智慧化戰場的「標配」要素

未來智慧化戰場，將呈現資訊化條件下綜合運用智慧化武器和手段、實現高效指揮控制及實施精確靈巧打擊的高技術作戰特性。衛星導航技術，能高精度、全天候、大範圍、多用途地為陸、海、空、天各種物件提供定位、導航、授時服務。

為體系化作戰提供統一時空基準。對於智慧化戰場來說，連結要素多、情況瞬息萬變，要求對作戰單元進行準確定位，實現統一時空基準下的情報偵察、指揮控制、戰場機動、攻防行動、支援保障，確保整個戰場各類要素形成統籌協調的有機整體。

衛星導航的基本功能是，為各個作戰要素提供精確的時空基準。如果沒有精確統一的時空基準，聯合作戰精準指揮可能失調，作戰行動就可能失控，情報融合、目標辨識就無法實現。時間誤差百分之一秒，十幾部雷達鎖定的一個目標就會變成十幾個目標，精準防禦反擊將無法實現。

在統一標準時間與地理座標系下，衛星導航提供各類武器平台精確導引，給予電子戰武器精細校頻，給予作戰單兵全天候定位導航，顯著提升聯合火力打擊的協同程度、打擊效能。

為作戰指揮控制提供態勢同步認知。準確掌握戰場態勢，是指揮官靈活準確實施指揮控制的前提與基礎。衛星導航系統為戰場態勢感知提供了強大支撐。

美軍從1990年代開始，研發以GPS和衛星通訊為基礎的「藍軍追蹤」系統，用來建構精確化指揮控制系統。 「藍軍追蹤」系統有力支撐著美軍形成地面戰場網路化資訊優勢，有效解決了「我、友、敵在哪裡」的難題。

軍隊依托全球衛星網路的導航定位和位置報告兩大服務，實現了戰場態勢監視共享，成為軍隊「知己」的重要手段。同時，優化了作戰行動流程，實現了作戰指令分秒下達，加速了軍隊指揮控制方式向「一體化」「扁平化」方向發展。

為武器彈藥精確打擊提供增效利器。在智慧化戰場上，精確導引武器已成為關乎勝負的「撒手鐧」。使用衛星導航系統，能對飛彈的飛行過程進行全程修正，確保命中精度。可以說，衛星導航系統是武器平台精準打擊的增效利器。

在近幾場局部戰爭中，美軍GPS精確導引武器比例不斷攀升：1991年海灣戰爭為7.6％，1999年科索沃戰爭為35%，2001年阿富汗戰爭為60％，2003年伊拉克戰爭為68.3％，2018年敘利亞戰爭達100%。

智慧化戰場需要衛星導航有新的“擔當”

現代衛星導航系統作為精確統一時空體系的核心與基石，面向未來智慧化戰場的發展需求，要有新的「擔當」。

智能化時代，以「AI、雲、網、群、端」為代表的全新作戰要素，將重建戰場生態，完全改變戰爭的勝利機制。衛星導航服務，需要適應智慧化戰場維度更廣、精準度更高、系統更強的特性。

導航定位授時範圍更廣精度更高。目前的衛星導航系統，實現了地球表面覆蓋。但在智慧化戰場上，需要向深空、海下延伸。作戰時域空域更廣，要求建構覆蓋陸海空天、基準統一、高效智慧的綜合服務體系，形成無時不有、無所不在的時空資訊覆蓋，實現更強大、更安全、更可靠的時空服務能力。

如智慧化戰場上，無人化作戰成為基本形態。無人車自動駕駛、無人機精密進場、智慧飛彈陣地測量等，都迫切需要在現有導航精度基礎上再提升一個量級，確保導航完好性更高、首次定位時間更快、陸海空天跨域能力更強。

軍事導航對抗體系更全更給力。資訊時代的導航對抗手段，是以訊號能量增強與幹擾攻擊為主的簡單對抗形態。智慧時代的導航與探測、感知、通訊、指揮、決策相互交織影響，需要全球任意區域、功率更高、生效更快的導航能力水平，需要導航訊號智慧調整能力，需要發展量子導航、脈衝星導航、深海導航等多元導航手段，把不同原理、不同方式、不同載體的導航方法融合在一起，實現體系級、系統級的導航對抗能力。

導航資訊互動頻寬更大存取更廣。智慧時代的網路空間，在作戰體系中地位作用逐步上升，並與導航時空體系合為一體。提供時空位置的導航資訊與網路空間系統，將把分散的作戰力量、作戰要素連結為一個整體，形成網路化體系化作戰能力。這就需要支援泛在感知、左右協作、可信賴的導航能力，支援高可靠、強抗干擾、隨遇接取的訊號通道，及時取得所需的地理、地圖和影像等導航輔助資訊。在此基礎上，實現真正意義上的通訊導航一體化，達到「一域作戰、多域支援」效果。

適應軍事智慧化發展需要推動智慧導航體系建設

從世界軍事強國發展趨勢來看，面向未來智慧化戰場，智慧導航系統在逐步建構天地一體化的時空基準網和導航資訊服務網，以天基化、體系化、按需化、雲端化為主要特徵，形成基準統一、覆蓋無縫、安全可信、高效便捷、實戰性強的綜合導航定位授時體系。

從基本導航系統轉變為智慧導航系統，其核心是從“定位導航服務”升級為“智慧導航服務”，並專注於以下4個面向轉變：

時空基準依賴地面系統維持轉變為時空基準天基自主維持。地面系統時空基準維持設備將逐步向星上轉移，衛星將配置更高精度的光鐘、天文測量設備，透過高精度錨固和雷射星間測量，形成更穩定可靠的天基空間基準。智慧導航系統的使用，可使一般導航定位精度達到亞米級，授時精度將提升5倍左右，精密定位服務達到快速收斂的公分精度。智慧導航可完整支撐作戰平台跨域融合、分散式殺傷武器效能倍增、空天一體無人機從巡航到精密進場的全過程精準導航。

衛星功率對抗模式向導航體系化對抗轉變。在導航對抗服務方面，傳統的衛星功率對抗模式將不再滿足智慧化戰場需求，導航體系化對抗是智慧裝備發展的必經之路，以便提升部隊快速適應戰場環境能力。具體包括導航性能精準釋放、星座異構備份、全球熱點機動，主要特徵是導航訊號智能化、戰區增援靈活化。基於可控制點波束能量增強技術，實現熱點區域能量傳遞、增強區域擴展、欺騙或阻塞幹擾、數傳服務保障。在高幹擾阻塞環境下，確保服務連續性和精確度，並隨著戰事進程逐步釋放實力。

通訊導航簡單整合向通導一體按需服務轉變。將提供更深更廣的導航資訊服務，深度融入軍事資訊網絡，向陸、海、空、天用戶的高、中、低速分類分層次導航資訊服務。重複利用導航衛星全球多重連續覆蓋的有利條件，滿足用戶在全球範圍、任意姿態的通導需求，實現高可靠性、抗強幹擾的搜救、位置報告、信令傳輸。導航衛星天基網路與地面網路資訊交互，建構星間、星地高速骨幹網路。透過小型化雷射終端和增強型空間路由器，形成穩定可靠的空間網絡，裝載完備、標準統一的協議體系，支援混合星座網絡自主智慧運作。

載重模組運算資源分離向星座運算資源雲端化轉變。將提供更智慧的天基雲端運算服務，為智慧武器平台提供可信賴的天基智慧支撐。主要特徵是，星載硬體資源虛擬化、任務負載平衡化。透過導航衛星配置公用的星載運算模組、大容量儲存單元、高速匯流排網絡，形成泛在的空間網路共享資源池。強大的資料處理能力，在支撐天基時空基準自主建立與維持、導航訊號品質智慧維持、空間網路自主管理等任務功能的同時，可為天、空、地、海各類高階用戶，提供空間位置等複雜資訊的運算、推播與儲存服務。

（作者係中國工程院院士）

上圖：衛星導航系統支援作戰示意圖。

中國原創軍事資源：http://www.81.cn/jfjbmap/content/2021-11/12/content_30291788.htm