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Home » Unmanned System Products » MASS-06 Continuous Echo Simulation Excitation System of Radio Altimeter
MASS-03 Radio Altimeter Continuous Echo Signal Simulator
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MASS-10 Universal Echo Precision Delay Module (Miniature Universal Continuous Simulation)

MASS-06 Continuous Echo Simulation Excitation System of Radio Altimeter

The MASS-06 Echo Signal Simulation Excitation System, hereinafter referred to as the “Simulation Excitation Source”, is a dedicated equipment designed for the hardware-in-the-loop (HIL) simulation of radio altimeters. It serves as a key component in replicating real-world echo signal scenarios, providing targeted excitation signals that enable the radio altimeter to operate under simulated physical conditions—effectively bridging the gap between theoretical testing and actual operational environments to validate the altimeter’s performance, responsiveness, and reliability.

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

Product Description

  • Working center frequency: 4.3ghz;
  • Maximum allowable bandwidth: 200MHz;
  • Maximum allowable input power: 36dbm;
  • Height range: 1-8000m (continuous);
  • Height resolution: 0.5m;
  • Height accuracy: ± (0.2 + 0.005 × h);
  • Correction accuracy after simulated altitude measurement: ± (0.2 + 0.001 × h) m;
  • Height change speed: – 500~500m/S;
  • Height switching time: no more than 1ms;
  • In band fluctuation: no more than 3dB;
  • Maximum attenuation of circuit: not less than 150db (high altitude);
  • Minimum attenuation of loop: no more than 40dB (low altitude);
  • Dynamic range of loop attenuation: not less than 80dB;
  • Dynamic range of loop attenuation: not less than 80dB;
  • Delay line through rejection: not less than 45dB;
  • Pass through rejection of transceiver port: not less than 90dB;
  • Multiple stroke suppression: not less than 45dB;
  • Spurious suppression: not less than 80dB;
  • Phase noise: no more than 80dbc/Hz@1kHz;
  • Control mode: RS422 serial port control;
  • Working temperature: 0 ~ 40 ℃;
  • Storage temperature: – 40 ~ 60 ℃;
  • Working power supply: AC/50Hz/220V, or DC24-36V; power consumption not more than 60W;
  • Volume:433mm×380mm×87mm.

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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.

Pulse Radar Altimeter MY-600L、MY-800L

The MY-600L altimeter is a fixed-frequency pulse radar altimeter developed for a specific type of aircraft, while the MY-800L altimeter is a frequency-agile pulse radar altimeter designed for another particular aircraft model. Both altimeters find wide application in cruise missiles and aircraft, serving to measure the relative height above the sea or ground. Notably, the MY-600L features a design approach centered on serialization, standardization, and modularization, which endows it with favorable product inheritance, high maturity, and reliable performance.

MY-70D Anti Jamming Radio Altimeter

Operating in the C-band, the MY-70D radio altimeter employs a frequency-modulated continuous wave (FMCW) operating system and incorporates closed-loop tracking measurement technology, equipping it with the capability to resist same-frequency asynchronous interference. This ensures that when multiple aircraft take off and fly simultaneously, their altimeters do not interfere with one another. To achieve resistance against active interference, the altimeter adopts a range of measures, including anti-blocking, anti-burnout, power control, beam control, frequency agility, and frequency modulation (FM) technology. Furthermore, it features silent power supply control for its microwave components; its antenna is fitted with a band-pass filter, and a customized radome with frequency-selective functionality is utilized—these design elements enable the altimeter to achieve a wave transmission rate of ≥85% for the operating frequency within the band and less than 10% for out-of-band frequencies, thereby realizing stealth capabilities.

MASS-21 Echo Simulator of Radio Altimeter

​The MASS-21 Radio Altimeter Echo Simulator is capable of simulating both static and dynamic echo signals of altimeters under a variety of altitude conditions and reflection coefficient scenarios. It is compatible with radio altimeters of multiple systems, including frequency modulation (FM) systems, phase modulation (PM) systems, and pulse systems, and is also equipped with a built-in self-check function to ensure its own operational reliability during use.

Radio Altimeter MY-3001D

The MY-3001D radio altimeter incorporates two key technologies: a linear modulation coefficient technology that adapts to altitude changes and a narrow-band receiving technology for echo signals, both of which effectively enhance the product’s resistance to active interference. It also adopts coherent local oscillator mixing, granting it superior performance in resisting co-frequency asynchronous interference, and employs echo signal spectrum front-edge detection technology to boost tracking accuracy. In terms of design, the altimeter follows the principles of serialization, standardization, and modularization. While retaining its closed-loop tracking system, it further integrates digital control technology, microwave integration technology, and hybrid integration technology to achieve product modularization. Additionally, it is equipped with a silent function, which further improves the product’s anti-interference capability. This radio altimeter is applicable to cruise missiles and unmanned aerial vehicles (UAVs) for measuring the altitude relative to the sea surface or the ground.

MDG-100 Radio Height Setting Device

The MDG-100 radio altimeter operates in the C-band and adopts a pulse Doppler working system. Its sensitive device is of the heterodyne type, and the circulator at the antenna terminal uses a transceiver common-mode design. With mature technology, this altimeter is installed on missiles and serves as a control component for altitude fuzes. It features capabilities such as high burst altitude, strong adaptability to high falling speeds, and excellent performance in resisting ground clutter and sea clutter. Additionally, it employs pseudo-random pulse modulation technology: the pulse period varies randomly within a specified range, making it difficult for jammers to identify the initial modulation pulse of the fuze signal and further predict the delayed pulse. This design effectively enhances the altimeter’s resistance to active interference.

6U Module Radio Altimeter MY-919

The MY-919 radio altimeter is a new-generation altitude-measuring radar system designed for a specific type of aircraft; as a miniaturized, full-function radio altimeter that complies with avionics standards, it serves as a key component for the control of an aircraft’s longitudinal altitude channel and can be widely applied in large aircraft and unmanned aerial vehicles (UAVs). A radio altimeter based on a frequency-modulated continuous wave (FM CW) closed-loop tracking servo control measurement system, the MY-919 adopts linear modulation coefficients adaptive to altitude changes and narrow-band reception of echo signals, granting the product strong resistance to active interference; it uses coherent mixing reception, which delivers superior performance in resisting co-frequency asynchronous interference and ensures the product has good electromagnetic compatibility; it employs echo signal spectrum front detection technology, enabling the product to maintain high precision in tracking and measurement; it follows serialization, standardization, and modularization design principles, resulting in good product inheritance; and it integrates digital frequency-domain processing and control, microwave integration technology, and hybrid integration technology, making the product stable in performance, mature, and reliable.

Small Radio Altimeter MY-1000

The MY-1000 altimeter is a radar altimeter specially designed for a specific type of target missile aircraft; as a compact, full-function radio altimeter that complies with aerospace standards, it serves as a key component for longitudinal altitude channel control and can be widely used in cruise missiles and UAVs to measure height relative to sea level or the ground. The MY-1000 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 three design principles of serialization, standardization, and modularization—endowing it with good product inheritance, maturity, and reliability.

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