Numerical Control Attenuator
Drawing on the expertise of its seasoned microwave team, process team, and management team, Hangtai Technology has been continuously elevating the R&D and production standards of microwave components. The microwave components developed by this division not only meet the requirements of the company’s radar systems and radio altimeters but also extend their application to serve societal needs.
Related products
MDG-300 Radio Altimeter
The MDG-300 radio height-fixing device operates in the C-band and adopts a pulse compression system. Its sensitive component is of the heterodyne type, and the circulator at the antenna terminal uses a transceiver common-mode design. Prior to missile launch, 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 a gate is set in accordance with the preset height. When the preset height is reached, the device outputs height-fixing command information and telemetry data. The MDG-300 height-fixing device features mature technology: its pulse compression technology can enhance the altimeter’s height measurement performance, and it has the characteristic of a wide height measurement range. Additionally, the digital pulse compression function based on FPGA (Field-Programmable Gate Array) endows it with advantages such as small size, low power consumption, and low cost.
MDG-200 Radio Altimeter
The MDG-200 radio height-setting device operates in the C-band and adopts a monopulse working system. Its sensitive component is of the heterodyne type, and the circulator at the antenna terminal uses a transceiver common-mode configuration. Prior to missile launch, the height-setting device needs to be powered on; it then performs a self-check and completes height setting via the communication interface. After the missile is launched, the radio frequency (RF) module is activated, and a gate is set based on the preconfigured height. When the preset height is reached, the device outputs height-setting command information and telemetry data. The MDG-200 height-setting device features mature technology: the monopulse design enhances the altimeter’s height measurement performance, and the device also has the characteristic of not being affected by the carrier’s speed.
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.
Subminiature Radio Altimeter MY-3001
The MY-3001 series altimeters include models such as MY-3001A, MY-3001B, MY-3001C, MY-3001D, MY-3001E, MY-3001F, MY-3001G, and MY-3001H; as China’s smallest and lightest full-function radio altimeters that meet aerospace standards, they serve as key components for longitudinal height channel control and can be widely used in cruise missiles and UAVs to measure altitude relative to the sea or ground. The MY-3001 series altimeters adopt linear modulation coefficient technology adaptive to altitude changes and echo signal narrow-band receiving technology to enhance the product’s resistance to active interference, use coherent local oscillator mixing to achieve superior performance in resisting co-frequency asynchronous interference, employ echo signal spectrum front detection technology to improve tracking accuracy, and follow the three design principles of serialization, standardization, and modularization to enable high-speed production; additionally, built on a closed-loop tracking system, they integrate digital control technology, microwave integration technology, and hybrid integration technology to realize ultra-miniaturization of the product. As China’s first full-function radio altimeter, the series is known as the "high-speed rail ticket" in the industry.
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.
MY-5001B Radio Altimeter for Sea Condition Identification
The MY-5001B radio altimeter is an all-solid-state C-band device featuring a frequency-modulated continuous wave (FM-CW) system, a constant differential beat frequency, and a closed-loop tracking and measurement mechanism. It ensures a constant beat frequency through servo control of the slope of the sawtooth wave that modulates the microwave oscillator, thereby achieving automatic height tracking. This altimeter incorporates a suite of advanced technologies, including narrowband reception, weighted frequency discrimination, equivalent spectrum leading edge detection, gain PID control, instantaneous sensitivity compensation, temperature compensation, horizon frequency selection design, and power silence. These technologies collectively endow it with advantages such as accurate height measurement, stable tracking, adaptability to various terrains, a wide height measurement range, high precision, and strong anti-interference 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.
