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Home » Unmanned System Products » MASS-03 Radio Altimeter Continuous Echo Signal Simulator
MY-5001B Radio Altimeter for Sea Condition Identification
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MASS-06 Continuous Echo Simulation Excitation System of Radio Altimeter

MASS-03 Radio Altimeter Continuous Echo Signal Simulator

The MASS-03 Radio Altimeter Continuous Echo Signal Simulator is a specialized testing device designed to generate stable, continuous echo signals that replicate real-world altitude-related signal environments for radio altimeters. Tailored to support the development, calibration, and performance verification of radio altimeters, it accurately simulates various echo signal characteristics (such as amplitude, frequency, and delay) corresponding to different altitude scenarios, enabling users to test critical functions of radio altimeters—including height measurement accuracy, tracking stability, and anti-interference performance—under controlled laboratory conditions. By providing reliable, repeatable continuous echo signals, the simulator eliminates the need for costly and complex field tests, streamlining the testing process while ensuring radio altimeters meet design specifications for accuracy, stability, and robustness in practical operation.

Categories: Atmospheric Treatment, Data Communication, Partsassembly, Radar Detection, Scene Simulation
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  • Description
Description

Product Description

  • Working frequency: 4.2~4.4ghz (the working frequency can be customized according to the user’s requirements);
  • Maximum allowable bandwidth: 200MHz;
  • Maximum allowable input power: 26dBm (can be customized according to user requirements);
  • Simulation height range: 1-4000m;
  • Simulation height resolution: 0.2m;
  • Absolute accuracy of simulated height: ± (0.2+0.005×h) m;
  • Correction accuracy after simulated altitude measurement: ± (0.2+0.002×h) m;
  • Height change speed: -500~500m/S;
  • Maximum attenuation of loop: not less than 130dB;
  • Minimum attenuation of loop: no more than 40dB;
  • Dynamic range of loop attenuation: not less than 80dB;
  • External volume: 3U standard cabinet of simulator body;
  • Control mode: Reflection memory control;
  • Working temperature: 0-50 ℃;
  • Storage temperature: 20-60 ℃.

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MDG-400 Radio Altimeter

The MDG-400 radio altimeter operates in the C-band and adopts a frequency-modulated continuous wave (FMCW) working system, with its antenna utilizing a transmit-receive separation mode. Prior to missile launch, the altimeter (serving as the height-fixing device) is powered on, and it undergoes self-check and height presetting via the communication interface. After the missile is launched, the radio frequency (RF) module is activated, and frequency variation parameters are set based on the preset height. When the preset height is achieved, the altimeter outputs height-fixing command information and telemetry data. The MDG-400 altimeter features mature technology; its adoption of frequency-modulated continuous wave (FMCW) technology endows it with the advantages of compact size and a large height measurement range.

Electronic Countermeasure Radio Altimeter MY-18A、19A

Developed to meet the requirements of electronic countermeasures and terminal penetration, the MY-18A and MY-19A electronic countermeasure radio altimeters incorporate a range of advanced technologies including frequency agility, radiated power control, beam control, anti-burnout, anti-blocking, and echo frequency-domain processing—endowing them with excellent anti-jamming performance. Meanwhile, these altimeters also integrate a sea state identification function, which leverages information such as echo spectrum broadening, Doppler frequency, and altitude under different sea conditions to achieve accurate sea state recognition.

Subminiature Radio Altimeter MY-70B

The MY-70B radio altimeter is a solid-state C-band radio altimeter system based on frequency-modulated continuous wave (FMCW) technology, characterized by constant beat frequency and closed-loop tracking measurement. It maintains a constant beat frequency by servo-controlling the slope of the sawtooth wave that modulates the microwave oscillator, thereby achieving automatic altitude tracking. Under the condition of constant beat frequency, the measured altitude is proportional to the modulation period; thus, altitude information can be obtained by measuring the modulation period, and the system then converts this information into an altitude voltage for output. The MY-70B altimeter possesses excellent anti-jamming performance, owing to its adoption of a narrow-band receiver (with gain adjustable according to altitude) as well as technologies including equivalent spectrum front-end detection, weighted frequency identification, and automatic servo tracking. In terms of component design, its high-frequency components implement microwave integration while its low-frequency components adopt a modular design—these measures collectively enhance the product’s reliability, anti-interference capability, and electromagnetic compatibility. Additionally, the MY-70B altimeter uses RS422 and CAN protocols for its interface output, which further improves the reliability of the product’s data transmission.

MASS-15 Continuous Echo Simulation Excitation System of Radio Altimeter

The MASS-15 Continuous Echo Simulation Excitation System of Radio Altimeter is a specialized testing equipment designed to support the performance verification, calibration, and development of radio altimeters. It focuses on generating stable, continuous echo signals that accurately replicate real-world altitude-related signal environments—including varying echo amplitudes, frequency characteristics, and delay parameters corresponding to different flight altitudes and terrain conditions. By providing these realistic simulated excitation signals, the system enables radio altimeters to operate under controlled laboratory conditions, allowing engineers to test key functions such as height measurement accuracy, continuous tracking stability, and anti-interference capability. Its reliable continuous echo simulation function not only replaces the need for complex and costly field tests but also ensures consistent, repeatable test results, making it an essential tool for ensuring the reliability and performance of radio altimeters in practical aviation applications.

MDY-01 Radar Seeker

A radar seeker is a radar device installed on missiles, primarily used for target detection and tracking. It provides target position and motion parameters to the missile’s control system, thereby guiding the missile to fly toward the target. The MDY-01 radar seeker is characterized by high measurement accuracy, strong environmental adaptability, and high reliability.

MAST-09 Radio Altimeter Detection Unit

The MAST-09 Radio Altimeter Detection Unit is a compact, aerospace-grade component that monitors, validates, and processes radio altimeter data for aircraft. It filters interference, cross-references data with other flight sensors, and detects faults (e.g., signal loss, calibration drift) to deliver reliable terrain-relative altitude info—critical for safe takeoff, low-altitude flight, approach, and landing, even in low visibility. Built to meet strict aerospace standards (e.g., DO-160, DO-178), it withstands extreme environmental conditions, suiting commercial and military aircraft.

Full Function Radio Altimeter MMK-4

The MMK-4 altimeter is a full-function radio altimeter that meets aerospace standards; serving as a key component for longitudinal altitude channel control, it can be widely applied in cruise missiles and aircraft to measure altitude relative to the sea or ground. The MMK-4 adopts linear modulation coefficient technology adaptive to height changes and echo signal narrow-band receiving technology to enhance the product’s resistance to active interference, uses coherent local oscillator mixing to achieve superior performance in resisting co-frequency asynchronous interference, employs echo signal spectrum front detection technology to improve tracking accuracy, and follows the design principles of serialization, standardization, and modularization—endowing it with good product inheritance, maturity, and reliability.

Subminiature Radio Altimeter MY-70A

The MY-70A radio altimeter is a solid-state C-band radio altimeter system based on frequency-modulated continuous wave (FMCW) technology, featuring constant beat frequency and closed-loop tracking measurement. It maintains a constant beat frequency by servo-controlling the slope of the sawtooth wave that modulates the microwave oscillator, thereby achieving automatic altitude tracking. Under the condition of a constant beat frequency, the measured altitude is proportional to the modulation period; thus, altitude information can be acquired by measuring the modulation period, and the system then converts this information into an altitude voltage for output. The MY-70A altimeter boasts excellent anti-jamming performance, thanks to its adoption of a narrow-band receiver (with gain adjustable according to altitude), as well as technologies including equivalent spectrum front-end detection, weighted frequency identification, and automatic servo tracking. Additionally, the altimeter’s high-frequency components are implemented with microwave integration, while its low-frequency components utilize a modular design—these measures collectively enhance the product’s reliability, anti-interference capability, and electromagnetic compatibility.

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