Radar Technology on Counter UAV Radar — Low-Altitude Surveillance Radar

Why Radar Remains Essential in Modern Electro-Optical Defense Systems

Mon, 20 Oct 2025 00:00:00 +0800

As cooled MWIR and multispectral EO payloads become more affordable, many integrators wonder if radar is still required. In practice, radar remains the only sensor that ensures true all-weather, all-time situational awareness. Radar and EO are not competitors — they are complementary technologies built on different physical principles.

1. Coverage vs. Clarity

Attribute	Radar	Electro-Optical
Detection Principle	Active (microwave emission)	Passive (light/thermal)
Field of View	360° wide-area	Narrow (2–20° typical)
All-Weather Operation	Works through rain, fog, dust, night	Affected by light, fog, glare
Response Logic	Instant pre-warning	Visual confirmation
Target Type	Drones, vehicles, vessels, humans	Visible or heat-emitting objects
Role in System	Detection & cueing	Identification & verification

EO shows what’s happening — radar tells where it’s happening. EO lets you see. Radar lets you find.

Radar Technology Overview: Types, Principles, and Applications Across Domains

Fri, 10 Oct 2025 00:00:00 +0800

1. What Is Radar?

Radar (Radio Detection and Ranging) is an electronic sensing system that uses radio waves to detect and determine the position, velocity, and characteristics of objects. The core process follows a simple logic: transmit electromagnetic waves → receive reflections → analyze and calculate.

By measuring the time delay between transmission and return, a radar determines distance. By analyzing frequency shifts (Doppler effect) , it calculates target velocity. By comparing phase and angle differences , it estimates direction and elevation.

Analysis of Core Terminology in Radar, Communications, and Electronic Warfare: The Essential Guide from Beginner to Expert

Wed, 10 Sep 2025 00:00:00 +0800

Radar, communications, and electronic warfare are key technological fields in modern science and engineering, involving a vast array of specialized terms and core concepts. To facilitate systematic learning and quick reference, we have compiled a glossary of industry terminology to help you efficiently master relevant professional knowledge.

Core Terminology of Radar, Communications, and Electronic Warfare

Chinese	English
雷达	Radar
脉冲多普勒雷达	pulse-Doppler radar
搜索雷达	search radar
跟踪雷达	tracking radar
火控雷达	fire-control radar
气象雷达	weather radar
有源相控阵	AESA
无源相控阵	PESA
相控阵	phased array
平板天线	planar array
共形阵列	conformal array
收发模块	T/R module
移相器	phase shifter
真实时延	true time-delay
数字波束形成	digital beamforming
波束形成	beamforming
自适应波束形成	adaptive beamforming
最小方差无失真响应	MVDR
Capon波束形成	Capon beamformer
MUSIC算法	MUSIC
ESPRIT算法	ESPRIT
到达方向	DOA
俯仰角	AOA
单脉冲	monopulse
和通道	sum channel
差通道	difference channel
均匀线阵	ULA
均匀面阵	URA
均匀圆阵	UCA
单元间距	element spacing
半波长间距	half-wavelength spacing
互耦	mutual coupling
阵列因子	array factor
旁瓣电平	sidelobe level
旁瓣抑制	sidelobe suppression
栅瓣	grating lobe
斜视	beam squint
标定	calibration
相位标定	phase calibration
幅度标定	amplitude calibration
通道失配	channel imbalance
内标定	internal calibration
外标定	external calibration
标定环	calibration loop
脉冲体制	pulsed radar
连续波	CW
调频连续波	FMCW
线性调频	chirp
线性调频	LFM
非线性调频	NLFM
相位编码脉冲	phase-coded pulse
巴克码	Barker code
多相码（P1-P4）	polyphase code (P1–P4)
Frank码	Frank code
M序列	M-sequence
戈雷码对	Golay pair
逐频体制	step-frequency radar
三角调制	triangular modulation
锯齿调制	sawtooth modulation
上扫频	up-chirp
下扫频	down-chirp
脉冲重复间隔	PRI
脉冲重复频率	PRF
脉宽	pulse width
占空比	duty cycle
时带宽积	time-bandwidth product
相参处理间隔	coherent processing interval (CPI)
相干积累	coherent integration
非相干积累	noncoherent integration
脉间调制	inter pulse modulation
脉内调制	intra-pulse modulation
交错PRI	staggered PRI
抖动PRI	jittered PRI
无模糊距离	unambiguous range
无模糊速度	unambiguous velocity
距离模糊	range ambiguity
多普勒模糊	Doppler ambiguity
匹配滤波器	matched filter
窗函数	window function
汉宁窗	Hann window
海明窗	Hamming window
布莱克曼窗	Blackman window
切比雪夫窗	Chebyshev window
泰勒窗	Taylor window
模糊函数	ambiguity function
方位向分辨率	cross-range resolution
速度分辨率	velocity resolution
距离分辨率	range resolution
压缩比	compression ratio
距离旁瓣	range sidelobe
距离FFT	range FFT
多普勒FFT	Doppler FFT
距多二维FFT	2D FFT (RD-FFT)
距离-速度图	range-velocity map
微多普勒	micro-Doppler
杂波	clutter
海杂波	sea clutter
地杂波	ground clutter
雨杂波	rain clutter
杂波图	clutter map
动目标显示	MTI
动目标检测	MTD
空时自适应处理	STAP
旁瓣对消	DPCA
地面动目标指示	GMTI
恒虚警	CFAR
均值恒虚警	CA-CFAR
最大值恒虚警	GO-CFAR
小值恒虚警	SO-CFAR
统计恒虚警	OS-CFAR
目标检测	target detection
目标跟踪	target tracking
多目标跟踪	multi-target tracking

If you have any terms to add or wish to explore detailed explanations of specific terms, feel free to leave a comment and interact with us! We will continue to update the terminology and refine the knowledge base, striving to provide you with more professional and practical industry knowledge tools. Stay tuned!

Analysis of the Development History and Future Trends of Coastal Security Radar Technology in China by Wuhan Cyrentis

Wed, 30 Jul 2025 00:00:00 +0800

Analysis of the Development and Application of China’s Coastal Security Radar Technology: From Imitation to Independent Innovation

In today’s complex and ever-changing international landscape, coastal security has become a critical component of national security. Events such as the joint U.S.-U.K. naval patrol in the East China Sea in June 2025 and the joint air-sea cruise organized in the South China Sea in July have continuously influenced regional security dynamics, further highlighting the strategic value and urgency of coastal security radar technology.

China Radar Technology: A Comprehensive Analysis of Development History, Current Status, and Future Trends

Fri, 27 Jun 2025 00:00:00 +0800

Throughout history, the advancement of radar technology has served as a brilliant beacon, illuminating the course of national security. On the occasion of the 80th anniversary of the victory in the War of Resistance Against Japan, the grand military parade held on September 3 is not only a solemn tribute to history but also a powerful declaration to the world of China’s defense capabilities and its resolve to safeguard national sovereignty. In the face of the current complex and ever-changing international landscape and the challenges to maritime security, radar technology, as the cornerstone of national defense security, profoundly influences the nation’s strategic layout and the protection of maritime rights and interests through its innovative development.

Analysis of the Current Development and Future Trends in Offshore Security Radar Technology: Key Technologies, Application Scenarios, and Market Prospects

Wed, 25 Jun 2025 00:00:00 +0800

In an increasingly complex international political environment, the strategic importance of coastal security has become more prominent. In recent years, incidents such as unauthorized entry of British warships into the Taiwan Strait and illegal activities by the Philippines around the waters of Half Moon Shoal and Captain Reef in the Nansha Islands have seriously infringed upon China’s maritime rights and interests. As a critical asset in the national maritime security framework, coastal security radar plays an indispensable role in safeguarding national sovereignty over territorial waters and maritime interests, owing to its technical performance and development potential.

Ground Security Radar: The Core Technical Equipment of Modern Security Monitoring Systems

Wed, 09 Apr 2025 00:00:00 +0800

In the era of rapid technological advancement, security monitoring technology is undergoing unprecedented transformation. As an advanced electronic detection device, ground security radar has become an indispensable core component of modern security systems due to its high-precision target recognition, long-range monitoring capabilities, and stability unaffected by environmental conditions. This article systematically introduces the working principles, key technological advantages, and typical application scenarios of ground security radar, providing readers with a comprehensive technical application guide.

Combat Application Analysis of Individual Soldier Radar: A Comprehensive Guide and Tactical Techniques

Thu, 13 Mar 2025 00:00:00 +0800

With high portability, real-time monitoring, high-precision detection, and intelligent analysis capabilities, portable radar is playing an increasingly critical role in key fields such as military operations, law enforcement, security, and search and rescue, significantly enhancing mission execution efficiency and personnel safety. Below are typical application scenarios of portable radar:

1. Military Reconnaissance and Counter-Terrorism Operations

In complex battlefield environments such as jungles and urban structures, traditional reconnaissance methods often struggle to provide comprehensive coverage. As the “key eye” of special forces, portable radar can penetrate vegetation and obstacles, capture enemy movements in real time, and accurately identify ambushes and personnel trajectories. In practical combat applications, troops can use radar data to anticipate enemy intentions, effectively avoid ambushes, significantly improve mission success rates, and ensure the safety of combat personnel.

Photoelectric Detection and Acoustic Anti-Drone Systems: Core Technical Differences and Application Scenarios Comparison

Tue, 24 Dec 2024 00:00:00 +0800

With the rapid advancement of drone technology, its applications in military and civilian fields have become increasingly widespread. However, drones also pose significant security risks, particularly in battlefield environments, where they can carry ammunition to conduct precise strikes against ground targets, presenting a major threat. In response, many countries around the world are actively developing counter-drone systems to address this emerging challenge, enabling effective identification, tracking, and elimination of drone threats.

Complete Analysis of Anti-Drone Radar Recognition Technology: Chapter 4 Finale

Thu, 05 Dec 2024 00:00:00 +0800

In Counter-Unmanned Aerial Systems (C-UAS), target recognition capability has always been one of the core technical bottlenecks. Although systems should theoretically be able to distinguish between different target types, in practical applications, recognition performance is often limited by stable tracking conditions. Currently, most systems can only achieve “Tier-2 Classification” level recognition for targets such as birds and drones. To break through this limitation, micro-Doppler radar technology has become a key focus in current anti-drone radar research.

Beginner's Guide to Radar: Mastering Core Basics from Scratch

Mon, 24 Jun 2024 00:00:00 +0800

What is Radar?

Radar (RADAR) is an acronym for “Radio Detection and Ranging.” It is a key technology that uses radio waves to detect objects and determine their spatial positions. In November 1940, U.S. Navy Commanders Samuel M. Tucker and F. R. Furth first formally proposed the term “radar,” which is why it is also widely referred to as a “radio positioning system.”

Historical Development of Radar

Origins and Early Applications

Radar technology dates back to World War I. At that time, the British military urgently needed a technology capable of detecting airborne metal objects to counter the threat of German air raids. During World War II, radar technology experienced rapid development, gradually giving rise to various functional systems such as ground-to-air, air-to-ground bombing, air-to-air fire control, and friend-or-foe identification.

Drone Detection Radar Technology: Principles, Applications, and Comprehensive Purchasing Guide

Wed, 06 Mar 2024 00:00:00 +0800

I. Overview

1. Background Introduction

In recent years, drone technology has rapidly developed in China, with its application scenarios continuously expanding. As technical barriers significantly lower,操控便捷性与负载能力的持续提升, and equipment prices gradually decrease, drones are rapidly becoming widespread.

However, the broad application of this technology also brings non-negligible security risks. Drones may be used by不法分子 for smuggling, reconnaissance, and even attacks, posing serious threats to public safety and personal privacy. Especially in China, the frequent occurrence of “black flight” and “disorderly flight” of consumer-grade drones has become increasingly prominent due to the lack of effective regulatory measures.

One Radar Meets All Needs: Efficient, Accurate, and Multifunctional All-in-One Solution by Wuhan Cyrentis

Sat, 02 Mar 2024 00:00:00 +0800

In today’s rapidly advancing technological landscape, radar technology has become an indispensable core tool across numerous industries. Whether in weather monitoring, autonomous driving, military defense, or industrial inspection, radar plays a vital role due to its efficiency, accuracy, and versatility. This article provides an in-depth analysis of how an ideal radar system meets diverse application needs and explores its key advantages in detail.

High Efficiency

Modern radar systems excel in performance efficiency, demonstrated in the following aspects:

Comprehensive Analysis of Radar Operating Frequencies: Principles, Classification, and Application Guide

Sat, 08 Jul 2023 00:00:00 +0800

According to the basic working principle of radar, any system that detects and locates targets by transmitting electromagnetic energy and utilizing the reflected echoes falls within the scope of radar, regardless of its transmission frequency. Common radar operating frequencies typically range from 220 MHz to 35,000 MHz, but in practice, many radar systems may operate outside this range. For example, sky-wave over-the-horizon (OTH) radar can operate at frequencies as low as 4 MHz or 5 MHz, while ground-wave OTH radar can operate at frequencies as low as 2 MHz. At the higher end of the spectrum, millimeter-wave radar can reach 94 GHz, and lidar uses even higher optical frequencies. Radars operating at different frequencies exhibit significant differences in engineering design and implementation.

Analysis of Core Radar Technical Indicators: A Guide to Key Parameters and Performance Evaluation

Thu, 06 Apr 2023 00:00:00 +0800

I. Performance Optimization of Antenna Feed System

As a critical component for transmitting and receiving radar signals, the core performance indicators of the antenna feed system include antenna aperture, antenna gain, beamwidth, sidelobe level, polarization type, feedline loss, and system bandwidth. Optimizing antenna gain and beam shape can significantly improve signal transmission efficiency and reception sensitivity while reducing environmental interference, forming the foundation for enhancing the overall performance of the radar system.

Radar Anti-Jamming Technology: A Comprehensive Guide to Principles, Methods, and Practical Applications

Thu, 02 Feb 2023 00:00:00 +0800

I. Overview of Radar Electronic Reconnaissance and Counter-Reconnaissance Technology

Radar electronic reconnaissance, as a critical component of electronic warfare, is a core method for gaining battlefield information superiority. It primarily encompasses technologies such as radar intelligence reconnaissance, radar countermeasure support reconnaissance, radar homing and warning, jamming guidance, and radiation source localization. These technologies form the foundation of modern electronic reconnaissance systems and play a vital role in real-time monitoring of enemy dynamics and enabling precision strikes.

Comprehensive Analysis of Security Radar Applications: Functions, Scenarios, and Core Technologies Explained

Tue, 20 Dec 2022 00:00:00 +0800

With its exceptional performance and high reliability, security radar has become a critical component in modern security systems and is widely used across various security scenarios. This article provides a systematic introduction to the core functionalities and primary application areas of security radar.

As a high-performance monitoring device, security radar can accurately detect the speed of moving targets, identify their direction of movement, and measure the distance of both static and dynamic targets. Its compact design allows for seamless integration into various security devices, such as cameras or dome cameras, enabling efficient target tracking and image capture. Equipped with a 70° wide azimuth detection capability and advanced phase-scan continuous wave radar technology, it ensures comprehensive and uninterrupted coverage of monitored areas.

Detailed Explanation of the Working Principle of Security Radar: Core Principles, Technical Applications, and Scenario Analysis

Mon, 12 Dec 2022 00:00:00 +0800

Security radar can simultaneously and accurately measure multiple parameters such as radial distance, radial velocity, and angle of both stationary and moving targets. Leveraging an advanced technical architecture, it offers exceptional environmental adaptability, high reliability, and true all-weather operational capability. Although initially used primarily in military applications, radar technology has gradually transitioned into civilian use with ongoing breakthroughs in research and technology. It is now widely applied in the security industry, demonstrating significant application value and market potential.

"Fundamentals of Radar Physics" Comprehensive Analysis: From Core Principles to Cutting-Edge Technologies and Application Scenarios

Thu, 22 Sep 2022 00:00:00 +0800

Learning any skill or technology often involves the process of “first understanding its form, then grasping its meaning, and finally mastering its essence.” Understanding the physical structure and basic form of a subject is usually the first step to getting started. With the rapid development of modern technology, although the structure of radar systems has become increasingly complex, their core components can still be summarized into five fundamental parts:

Transmitter, Receiver, Radar Antenna, Radar Processor, and Indicator.

Drone Detection Radar: A Comprehensive Analysis of Principles, Technologies, and Applications

Fri, 15 Apr 2022 00:00:00 +0800

Analysis of UAV LiDAR Technology: Principles, Classification, and Applications

Unmanned Aerial Vehicle (UAV) LiDAR (Light Detection and Ranging) is a high-precision measurement technology based on laser remote sensing. This article begins with the fundamental concepts of lasers, radar, and LiDAR, systematically analyzing their connections and differences, and delves into the working principles, technical classifications, and practical applications of UAV LiDAR.

1. Laser

Laser stands for “Light Amplification by Stimulated Emission of Radiation.” Its basic principle involves electrons in atoms absorbing energy and transitioning to a higher energy level, then releasing photons when returning to a lower energy level. These photons exhibit highly consistent properties, forming laser light.

Detailed Explanation of Radar Core Tactical Indicators: Comprehensive Performance Analysis and Practical Application Guide

Sat, 19 Feb 2022 00:00:00 +0800

Detailed Explanation of Key Radar Performance Parameters: Optimizing Observation and Data Processing Capabilities

The performance of a radar system directly affects its ability to detect, track, and identify targets. This article will delve into five key parameters to provide a detailed analysis of the core performance metrics of radar systems, helping readers understand how to enhance radar observation and data processing capabilities.

1. Observation Airspace

The observation airspace of a radar includes elements such as azimuth, elevation angle, maximum detection altitude, maximum operating range, and minimum operating range. The size of the airspace primarily depends on the radar’s radiation energy—the higher the energy, the broader the detectable airspace and the stronger the coverage capability.