Military Radars

Military Radars Market Outlook

The global Military Radars market is poised for significant growth, with an expected market size of approximately USD 30 billion by 2035, and a compound annual growth rate (CAGR) of around 5.5% during the forecast period from 2025 to 2035. The driving force behind this growth is the rising geopolitical tensions and defense modernization initiatives across various nations. Military organizations are increasingly investing in advanced radar technologies to enhance surveillance capabilities, threat detection, and tactical operations. Furthermore, the adoption of cutting-edge technologies such as artificial intelligence (AI) and machine learning (ML) is expected to bolster the capabilities and applications of military radar systems, thereby contributing to market expansion. The demand for integrated systems that provide real-time data analytics and situational awareness is also anticipated to fuel further advancements in radar technologies.

Growth Factor of the Market

The Military Radars market is primarily driven by several key factors, including the increasing defense budgets of countries around the globe, which are facilitating the procurement of modern radar systems. Moreover, the growing focus on border security and counter-terrorism efforts has intensified demand for sophisticated surveillance radars that can detect and track threats effectively. Technological advancements in radar systems, such as the development of solid-state radars and phased array systems, are further propelling market growth by offering higher precision and reliability. Additionally, the rising need for situational awareness in warfare and military operations has led to the integration of radars with other defense systems, enhancing their operational efficiency. The ongoing developments in electronic warfare and anti-radiation systems are also influencing military organizations to upgrade their existing radar installations to maintain an edge against potential adversaries.

Key Highlights of the Market

• The global Military Radars market is projected to reach USD 30 billion by 2035.
• Key drivers include increasing defense budgets and modernization initiatives across various nations.
• Technological advancements such as AI and ML integration are expected to enhance radar capabilities.
• Growing demand for integrated systems for real-time data analytics is driving market expansion.
• Geopolitical tensions and focus on border security are increasing the need for advanced surveillance radars.

By Type

Ground-based Radars:

Ground-based radars play a crucial role in military operations, providing real-time surveillance of land-based targets. These radars are designed to detect and track various aerial threats, including aircraft and missiles, and have capabilities for ground surveillance as well. Their strategic positioning allows for comprehensive area coverage, making them essential for border security and threat assessment. The advancements in digital signal processing and radar technology have led to the development of more sophisticated ground-based systems that can operate in challenging environments and under adverse weather conditions. As military operations become increasingly complex, the demand for these radars continues to rise, ensuring effective monitoring and response capabilities.

Naval Radars:

Naval radars are specialized systems designed for maritime operations, enabling the detection and tracking of surface and aerial threats at sea. These radars are integral to naval warfare strategies, providing situational awareness to naval vessels and enhancing their defensive capabilities. The evolution of naval radar systems has seen the incorporation of advanced technologies such as phased-array antennas and automated tracking systems, which improve target detection and engagement. As nations modernize their naval fleets and expand their maritime operations, the demand for sophisticated naval radar systems is expected to increase significantly, making them a critical component of modern naval defense strategies.

Airborne Radars:

Airborne radars are mounted on aircraft and drones, providing vital information for surveillance and reconnaissance missions. These systems are designed to detect, track, and identify aerial threats and ground targets from considerable distances, offering a strategic advantage in military operations. The development of multi-mode radars allows for simultaneous tracking of multiple targets and adaptability to changing mission requirements. As the use of unmanned aerial vehicles (UAVs) expands in military applications, the demand for advanced airborne radar technologies is anticipated to grow, facilitating enhanced operational efficiency and threat neutralization capabilities.

Space-based Radars:

Space-based radars represent the cutting edge of military surveillance capabilities, offering global coverage and real-time data collection from orbit. These systems are designed to monitor land and maritime activities, providing critical intelligence for defense planning and operations. The ability to assess threats without being constrained by terrestrial limitations makes space-based radars an invaluable asset for national security. The ongoing advancements in satellite technology and miniaturization are likely to enhance the capabilities and reduce costs associated with space-based radar systems, leading to increased adoption among military organizations worldwide.

Bi-static Radars:

Bi-static radars operate using two separate locations for transmitting and receiving radar signals, providing unique advantages in detecting low-observable targets. This configuration enhances the radar's ability to track stealth technology and other difficult-to-detect aerial platforms, making them highly effective in modern warfare scenarios. The increasing need for advanced detection capabilities is driving the demand for bi-static radars, especially as military forces seek to counteract advancements in stealth technology. As innovations continue to emerge, bi-static radars are expected to play a pivotal role in enhancing situational awareness and operational effectiveness in military contexts.

By Frequency Band

X-band:

X-band radars are known for their high-resolution imaging and precision tracking capabilities, making them ideal for various military applications. These radars operate in the frequency range of 8 to 12 GHz and are often utilized in missile guidance and target acquisition systems. The high frequency allows for better detection of small or fast-moving objects, which is crucial in modern combat scenarios. As technological innovations continue to advance X-band radar systems, their applications in air traffic control and naval operations are also expected to grow, ensuring their relevance in future military operations.

S-band:

S-band radars operate in the frequency range of 2 to 4 GHz, providing a good balance between range and resolution. They are commonly used for long-range surveillance and tracking, making them suitable for applications such as air defense and weather monitoring. The ability to penetrate through adverse weather conditions gives S-band radars a distinct advantage in military operations, enabling continuous monitoring and threat assessment. As the demand for robust surveillance capabilities increases, the role of S-band radars in military applications is anticipated to expand significantly.

L-band:

L-band radars function within the frequency range of 1 to 2 GHz, characterized by their ability to provide long-range detection and tracking capabilities. These radars are often utilized in applications such as air traffic control, vessel tracking, and artillery guidance. Their longer wavelength allows L-band systems to perform well in various environmental conditions, making them reliable for operational use. As military forces continue to seek versatile radar solutions that can operate effectively across different terrains and conditions, L-band radars remain an appealing option for defense applications.

C-band:

C-band radars operate within the frequency range of 4 to 8 GHz and serve a multitude of defense applications, including military communications and air defense systems. These radars provide a balance of range, resolution, and penetration, allowing them to function effectively in diverse operational environments. The C-band is frequently used in air surveillance and missile guidance systems due to its effective detection capabilities against various aerial threats. As the military sector increasingly emphasizes the need for multi-functional radar systems, the C-band is likely to see continued growth in adoption for both current and future applications.

Ku/K/Ka-band:

Ku/K/Ka-band radars operate in higher frequency ranges typically used for satellite communications, weather monitoring, and high-resolution imaging. These radars are particularly advantageous in applications requiring high-resolution data and advanced tracking capabilities, such as reconnaissance and surveillance missions. As military operations increasingly rely on real-time intelligence and situational awareness, the demand for Ku/K/Ka-band radar systems is expected to grow significantly. The continuous advancements in radar technology in these frequency bands will likely enhance military capabilities in various operational scenarios.

By Platform

Land-based:

Land-based radar systems are vital components of ground defense infrastructures, providing surveillance and target tracking capabilities across terrestrial environments. These radars are typically deployed in fixed installations or mobile units, enabling military forces to monitor vast areas and respond to potential threats effectively. The integration of advanced technologies, such as phased array antennas and digital signal processing, has improved the performance and reliability of land-based radars, making them indispensable for modern military operations. The growing emphasis on border security and counterinsurgency efforts is further driving the demand for robust land-based radar systems.

Naval-based:

Naval-based radar systems are essential for the effective operation of naval fleets, providing crucial intelligence for maritime surveillance and threat detection. These radars are designed to perform in challenging maritime environments, offering enhanced capabilities for tracking surface vessels and aerial threats. The integration of cutting-edge technology in naval radars, such as automatic identification systems (AIS) and integrated communications, has revolutionized naval warfare strategies, enabling faster response times and improved situational awareness. As navies around the world modernize their fleets and expand their global operations, the demand for advanced naval radar systems is expected to rise significantly.

Airborne:

Airborne radar platforms are integral to modern military operations, offering extensive surveillance capabilities from the skies. These systems, mounted on aircraft and drones, are designed for high-altitude reconnaissance, allowing military forces to monitor large areas and gather critical intelligence. The ability to detect and track threats from the air provides a strategic advantage in combat scenarios. The continuous advancements in radar technology, such as the development of synthetic aperture radar (SAR) and multi-function radar systems, ensure that airborne radars remain essential assets for military planning and operational effectiveness.

Space-based:

Space-based radar platforms represent the forefront of military surveillance technology, offering unparalleled global coverage and real-time data collection. These systems operate from orbit, allowing them to monitor land, sea, and air activities without the constraints of terrestrial limitations. The ability to gather intelligence from space provides military organizations with a strategic advantage in defense planning and operations. As satellite technology continues to advance and costs decrease, the adoption of space-based radar systems is expected to increase, enhancing national security measures and enabling proactive threat assessment capabilities.

UAV-based:

UAV-based radar systems are increasingly being utilized in military applications, providing flexible and cost-effective surveillance solutions. These systems are typically mounted on drones, allowing for high-altitude reconnaissance and target tracking in real-time. The integration of radar technology on UAVs enhances their operational capabilities, enabling them to gather intelligence over vast areas while remaining undetected. As the military sector continues to invest in unmanned systems for various applications, the demand for UAV-based radar technologies is expected to rise, offering innovative solutions for modern warfare scenarios.

By Range

Short Range:

Short-range radars are designed to operate effectively within limited distances, making them ideal for close-range surveillance and threat detection. These systems are particularly useful in defense applications such as perimeter security and vehicle tracking. The compact size and operational flexibility of short-range radars enable them to be deployed in various terrains and environments. As military forces increasingly focus on securing bases and critical infrastructure, the demand for short-range radar systems is anticipated to grow, providing essential capabilities for tactical operations.

Medium Range:

Medium-range radars are designed to cover a broader operational scope, providing vital surveillance and tracking capability within a moderate distance. These systems are commonly employed in air traffic control, coastal surveillance, and artillery tracking applications. The ability to detect and track targets at medium ranges enhances situational awareness and enables timely responses to potential threats. As military operations become more complex and multifaceted, the role of medium-range radars is expected to expand, ensuring effective monitoring and threat assessment capabilities.

Long Range:

Long-range radars are essential for comprehensive surveillance and tracking of aerial and ground threats over considerable distances. These systems are particularly valuable in air defense applications, where early detection of incoming threats is crucial for effective response. The advancements in radar technology, including enhanced resolution and target discrimination capabilities, have significantly improved the effectiveness of long-range radars. As nations continue to modernize their defenses and seek to maintain air superiority, the demand for long-range radar systems is expected to witness significant growth.

Very Long Range:

Very long-range radars are designed for extensive coverage, enabling military organizations to monitor vast areas and detect threats at considerable distances. These systems provide critical intelligence for strategic defense applications, enhancing situational awareness and operational readiness. The ability to integrate with other defense systems for unified command and control further enhances the value of very long-range radars. As the necessity for comprehensive surveillance capabilities continues to grow, the demand for these advanced radar systems is projected to increase substantially.

Ultra-Long Range:

Ultra-long-range radars represent the pinnacle of radar technology, providing unprecedented surveillance capabilities over extensive distances. These systems are designed to detect and track a wide array of threats, including ballistic missiles, making them essential for national defense strategies. The continuous advancements in radar technology and signal processing have significantly enhanced the performance of ultra-long-range radars, ensuring their effectiveness against emerging threats. As military organizations focus on defense against sophisticated aerial threats, the adoption of ultra-long-range radar systems is expected to rise, solidifying their role in modern military operations.

By Region

The Military Radars market exhibits diverse dynamics across different regions, influenced by varying defense budgets and geopolitical challenges. North America holds a prominent position in the market, accounting for approximately 35% of the total market share, primarily due to the significant investments made by the United States in defense technologies. The country's commitment to maintaining military superiority through advanced radar systems ensures a steady demand in this region, with a projected CAGR of 6% over the next decade. Meanwhile, Europe is also witnessing growth in the military radars market, driven by the increasing focus on border security and counter-terrorism efforts in light of recent geopolitical tensions.

In the Asia Pacific region, the Military Radars market is significantly expanding, fueled by countries like China and India, which are modernizing their defense capabilities with advanced radar technologies. This region is expected to witness the highest growth rate, with an estimated CAGR of 7% over the forecast period. Emerging economies are prioritizing defense spending to enhance their surveillance and reconnaissance capabilities. Latin America and the Middle East & Africa are also investing in military radar systems, albeit at a slower pace, driven by regional security concerns. Collectively, these regional dynamics contribute to a robust and competitive Military Radars market.

Opportunities

As the global Military Radars market continues to evolve, numerous opportunities are emerging for manufacturers and defense contractors. One significant opportunity lies in the integration of advanced technologies such as artificial intelligence (AI) and machine learning (ML) within radar systems. These technologies can enhance target detection, classification, and tracking capabilities, enabling military forces to respond more effectively to dynamic threats. Moreover, the increasing adoption of unmanned systems, such as drones and autonomous vehicles, presents opportunities for developing radar solutions that are specifically tailored to these platforms, allowing for comprehensive surveillance and reconnaissance capabilities in diverse operational environments. The collaboration between defense agencies and private sector companies to foster innovation in radar technologies also opens avenues for growth and development in the market.

Furthermore, international defense cooperation and joint military exercises are creating additional opportunities for the Military Radars market. As nations collaborate to address common security challenges, there is a growing demand for interoperable radar systems that can function seamlessly within multi-national defense frameworks. This trend is driving the need for advanced radar technologies that can be integrated across various military platforms and systems. Additionally, as the emphasis on homeland security and border protection intensifies, the demand for advanced radar systems capable of addressing these specific needs is expected to increase. Overall, the Military Radars market is poised for growth, offering numerous opportunities for innovation and expansion.

Threats

The Military Radars market faces several challenges and threats that could potentially hinder its growth trajectory. One of the primary threats is the rapid advancement of electronic warfare technologies, which aim to disrupt or neutralize radar systems on the battlefield. As adversaries increasingly develop sophisticated jamming and spoofing techniques, the effectiveness of traditional radar systems may be compromised. This evolving threat landscape necessitates continuous innovation and adaptation within the radar technology domain, requiring significant investments in research and development to stay ahead of emerging challenges. The potential for escalation in cyber warfare also poses a risk, as cyber-attacks could compromise the operational integrity of radar systems, leading to severe consequences for military operations.

Additionally, the fluctuation of defense budgets and political stability in various regions can impact the Military Radars market. Budget cuts or shifts in government priorities may lead to reduced investments in radar technologies, affecting manufacturers' revenues and market growth. The increasing focus on cost-effective defense solutions may also drive some nations to opt for lower-cost alternatives rather than investing in advanced radar systems. Such market dynamics can lead to heightened competition and pressure on manufacturers to innovate while maintaining cost efficiency. As a result, the Military Radars market must navigate these challenges to sustain growth and meet evolving defense requirements.

Competitor Outlook

• Lockheed Martin Corporation
• Raytheon Technologies Corporation
• Boeing Defense, Space & Security
• Northrop Grumman Corporation
• Thales Group
• Leonardo S.p.A
• General Dynamics Corporation
• Elbit Systems Ltd.
• SAAB AB
• Harris Corporation
• BAE Systems plc
• Airbus Defence and Space
• Rockwell Collins (Collins Aerospace)
• Israel Aerospace Industries (IAI)
• Indra Sistemas, S.A.

The competitive landscape of the Military Radars market is characterized by a mix of established defense giants and emerging players, all vying for market share amid a backdrop of increasing global defense spending. Companies such as Lockheed Martin, Raytheon Technologies, and Northrop Grumman are at the forefront, leveraging their extensive experience and technological prowess to develop cutting-edge radar solutions. These industry leaders are investing heavily in research and development to enhance their product offerings and maintain a technological edge. Additionally, collaboration with government defense agencies and partnerships with other technology firms are common strategies to drive innovation and meet evolving military requirements.

As the demand for advanced military radar systems continues to grow, companies are also focusing on expanding their portfolios to include next-generation technologies such as unmanned systems and integrated sensor solutions. Raytheon Technologies, for instance, is a leader in developing advanced radar technologies that utilize artificial intelligence to enhance detection and tracking capabilities. Lockheed Martin, on the other hand, is known for its innovative approaches in space-based radar systems, positioning itself as a key player in the evolving landscape of military surveillance. The ongoing emphasis on modernization and technological advancement in military operations ensures that the competitive landscape remains dynamic and ever-changing.

In addition to these major players, several companies are emerging as key competitors through specialized innovations and niche offerings. For instance, Thales Group and Leonardo S.p.A focus on developing advanced naval and aerial radar systems, catering to the growing demand for maritime security and air defense solutions. Meanwhile, regional players such as Indra Sistemas and Elbit Systems are capitalizing on local market opportunities, offering tailored radar solutions that meet specific defense needs. The competitive environment, therefore, is marked by both consolidation among industry leaders and the rise of innovative players, creating a diverse market landscape that is poised for continued growth.

• 1 Appendix

  • 1.1 List of Tables
  • 1.2 List of Figures

• 2 Introduction

  • 2.1 Market Definition
  • 2.2 Scope of the Report
  • 2.3 Study Assumptions
  • 2.4 Base Currency & Forecast Periods

• 3 Market Dynamics

  • 3.1 Market Growth Factors
  • 3.2 Economic & Global Events
  • 3.3 Innovation Trends
  • 3.4 Supply Chain Analysis

• 4 Consumer Behavior

  • 4.1 Market Trends
  • 4.2 Pricing Analysis
  • 4.3 Buyer Insights

• 5 Key Player Profiles

  • 5.1 SAAB AB
    • 5.1.1 Business Overview
    • 5.1.2 Products & Services
    • 5.1.3 Financials
    • 5.1.4 Recent Developments
    • 5.1.5 SWOT Analysis
  • 5.2 Thales Group
    • 5.2.1 Business Overview
    • 5.2.2 Products & Services
    • 5.2.3 Financials
    • 5.2.4 Recent Developments
    • 5.2.5 SWOT Analysis
  • 5.3 Leonardo S.p.A
    • 5.3.1 Business Overview
    • 5.3.2 Products & Services
    • 5.3.3 Financials
    • 5.3.4 Recent Developments
    • 5.3.5 SWOT Analysis
  • 5.4 BAE Systems plc
    • 5.4.1 Business Overview
    • 5.4.2 Products & Services
    • 5.4.3 Financials
    • 5.4.4 Recent Developments
    • 5.4.5 SWOT Analysis
  • 5.5 Elbit Systems Ltd.
    • 5.5.1 Business Overview
    • 5.5.2 Products & Services
    • 5.5.3 Financials
    • 5.5.4 Recent Developments
    • 5.5.5 SWOT Analysis
  • 5.6 Harris Corporation
    • 5.6.1 Business Overview
    • 5.6.2 Products & Services
    • 5.6.3 Financials
    • 5.6.4 Recent Developments
    • 5.6.5 SWOT Analysis
  • 5.7 Indra Sistemas, S.A.
    • 5.7.1 Business Overview
    • 5.7.2 Products & Services
    • 5.7.3 Financials
    • 5.7.4 Recent Developments
    • 5.7.5 SWOT Analysis
  • 5.8 Airbus Defence and Space
    • 5.8.1 Business Overview
    • 5.8.2 Products & Services
    • 5.8.3 Financials
    • 5.8.4 Recent Developments
    • 5.8.5 SWOT Analysis
  • 5.9 Lockheed Martin Corporation
    • 5.9.1 Business Overview
    • 5.9.2 Products & Services
    • 5.9.3 Financials
    • 5.9.4 Recent Developments
    • 5.9.5 SWOT Analysis
  • 5.10 General Dynamics Corporation
    • 5.10.1 Business Overview
    • 5.10.2 Products & Services
    • 5.10.3 Financials
    • 5.10.4 Recent Developments
    • 5.10.5 SWOT Analysis
  • 5.11 Northrop Grumman Corporation
    • 5.11.1 Business Overview
    • 5.11.2 Products & Services
    • 5.11.3 Financials
    • 5.11.4 Recent Developments
    • 5.11.5 SWOT Analysis
  • 5.12 Boeing Defense, Space & Security
    • 5.12.1 Business Overview
    • 5.12.2 Products & Services
    • 5.12.3 Financials
    • 5.12.4 Recent Developments
    • 5.12.5 SWOT Analysis
  • 5.13 Israel Aerospace Industries (IAI)
    • 5.13.1 Business Overview
    • 5.13.2 Products & Services
    • 5.13.3 Financials
    • 5.13.4 Recent Developments
    • 5.13.5 SWOT Analysis
  • 5.14 Raytheon Technologies Corporation
    • 5.14.1 Business Overview
    • 5.14.2 Products & Services
    • 5.14.3 Financials
    • 5.14.4 Recent Developments
    • 5.14.5 SWOT Analysis
  • 5.15 Rockwell Collins (Collins Aerospace)
    • 5.15.1 Business Overview
    • 5.15.2 Products & Services
    • 5.15.3 Financials
    • 5.15.4 Recent Developments
    • 5.15.5 SWOT Analysis

• 6 Market Segmentation

  • 6.1 Military Radars Market, By Type
    • 6.1.1 Ground-based Radars
    • 6.1.2 Naval Radars
    • 6.1.3 Airborne Radars
    • 6.1.4 Space-based Radars
    • 6.1.5 Bi-static Radars
  • 6.2 Military Radars Market, By Range
    • 6.2.1 Short Range
    • 6.2.2 Medium Range
    • 6.2.3 Long Range
    • 6.2.4 Very Long Range
    • 6.2.5 Ultra-Long Range
  • 6.3 Military Radars Market, By Platform
    • 6.3.1 Land-based
    • 6.3.2 Naval-based
    • 6.3.3 Airborne
    • 6.3.4 Space-based
    • 6.3.5 UAV-based
  • 6.4 Military Radars Market, By Frequency Band
    • 6.4.1 X-band
    • 6.4.2 S-band
    • 6.4.3 L-band
    • 6.4.4 C-band
    • 6.4.5 Ku/K/Ka-band

• 7 Competitive Analysis

  • 7.1 Key Player Comparison
  • 7.2 Market Share Analysis
  • 7.3 Investment Trends
  • 7.4 SWOT Analysis

• 8 Research Methodology

  • 8.1 Analysis Design
  • 8.2 Research Phases
  • 8.3 Study Timeline

• 9 Future Market Outlook

  • 9.1 Growth Forecast
  • 9.2 Market Evolution

• 10 Geographical Overview

  • 10.1 Europe - Market Analysis
    • 10.1.1 By Country
      • 10.1.1.1 UK
      • 10.1.1.2 France
      • 10.1.1.3 Germany
      • 10.1.1.4 Spain
      • 10.1.1.5 Italy
  • 10.2 Asia Pacific - Market Analysis
    • 10.2.1 By Country
      • 10.2.1.1 India
      • 10.2.1.2 China
      • 10.2.1.3 Japan
      • 10.2.1.4 South Korea
  • 10.3 Latin America - Market Analysis
    • 10.3.1 By Country
      • 10.3.1.1 Brazil
      • 10.3.1.2 Argentina
      • 10.3.1.3 Mexico
  • 10.4 North America - Market Analysis
    • 10.4.1 By Country
      • 10.4.1.1 USA
      • 10.4.1.2 Canada
  • 10.5 Military Radars Market by Region
  • 10.6 Middle East & Africa - Market Analysis
    • 10.6.1 By Country
      • 10.6.1.1 Middle East
      • 10.6.1.2 Africa

• 11 Global Economic Factors

  • 11.1 Inflation Impact
  • 11.2 Trade Policies

• 12 Technology & Innovation

  • 12.1 Emerging Technologies
  • 12.2 AI & Digital Trends
  • 12.3 Patent Research

• 13 Investment & Market Growth

  • 13.1 Funding Trends
  • 13.2 Future Market Projections

• 14 Market Overview & Key Insights

  • 14.1 Executive Summary
  • 14.2 Key Trends
  • 14.3 Market Challenges
  • 14.4 Regulatory Landscape

Segments Analyzed in the Report

The global Military Radars market is categorized based on

By Type

• Ground-based Radars
• Naval Radars
• Airborne Radars
• Space-based Radars
• Bi-static Radars

By Frequency Band

• X-band
• S-band
• L-band
• C-band
• Ku/K/Ka-band

By Platform

• Land-based
• Naval-based
• Airborne
• Space-based
• UAV-based

By Range

• Short Range
• Medium Range
• Long Range
• Very Long Range
• Ultra-Long Range

By Region

• North America
• Europe
• Asia Pacific
• Latin America
• Middle East & Africa

Key Players

• Lockheed Martin Corporation
• Raytheon Technologies Corporation
• Boeing Defense, Space & Security
• Northrop Grumman Corporation
• Thales Group
• Leonardo S.p.A
• General Dynamics Corporation
• Elbit Systems Ltd.
• SAAB AB
• Harris Corporation
• BAE Systems plc
• Airbus Defence and Space
• Rockwell Collins (Collins Aerospace)
• Israel Aerospace Industries (IAI)
• Indra Sistemas, S.A.