Electronic Countermeasure Radio Altimeter MY-18A、19A

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.

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.

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.

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.