Click to enlarge
Home » Unmanned System Products » PXI Bus Type Universal Echo Precision Delay Module (Miniature Universal Continuous Simulation)
M025A Transmitter SD Integrated Transmitter
Back to products
M025A Receiver SD Integrated Receiver

PXI Bus Type Universal Echo Precision Delay Module (Miniature Universal Continuous Simulation)

The PXI Radio Altimeter Simulator Module is a specialized signal simulation module that adheres to PXI bus technical specifications. Boasting key attributes including high accuracy, a wide attenuation range, simplified system configuration, and reliable stability with strong repeatability, it finds extensive application in factory testing for radio altimeter manufacturers, maintenance and inspection of altimeters, and on-site aircraft detection. As a critical module for verifying the performance and functionality of airborne radio altimeters, it serves as an indispensable foundational component for PXI bus-based automatic test systems of airborne avionics equipment.
It features communication capability with radio altimeter interfaces.
It is equipped with high-information simulation functionality.
It provides sensitivity detection for altimeters.
Categories: , , , ,
Description

Main Technical Specifications

  • Working center frequency: 4.3GHz;
  • Maximum allowable bandwidth: 200MHz (- 3dB bandwidth);
  • It has straight separation function;
  • Maximum allowable input power: 26dBm;
  • Simulation height range: single point: 2m, 5m; Continuous: 20-2000m;
  • Simulation height resolution: 0.5m;
  • Simulation height accuracy: ±(0.2+0.002×H)m
  • Height change speed: -500～500m/s;
  • Height switching time: no more than 1ms (excluding communication and analysis time);
  • In band fluctuation: ±1dB;
  • Minimum attenuation of circuit: no more than 40dB;
  • Maximum attenuation of circuit: not less than 100dB;
  • Control mode: RS422 serial port control;
  • Working temperature: -40℃～+60℃;
  • Storage temperature: -55℃～70℃.

Related products

Mini Radio Altimeter MY-4001

The MY-4001 series altimeter represents the latest generation of radar altimeters. While complying with aerospace standards, it boasts an extremely compact size, with external dimensions measuring a mere 86mm × 52mm × 25mm. As a full-featured radio altimeter, the MY-4001 serves as a core component for the control of the longitudinal altitude channel. It finds wide application in flying missiles and unmanned aerial vehicles (UAVs) to measure altitude relative to the sea surface or ground.
Employing a linear frequency-modulated continuous wave (LFMCW) measurement system, the MY-4001 exhibits outstanding characteristics, including high precision, strong anti-interference capability, excellent battery compatibility, and stable, reliable operation. These attributes make it particularly well-suited for radar altitude measurement in ultra-light and ultra-small aircraft. For interface output, it adopts RS422 and CAN protocols, which effectively enhances the reliability of the product's data transmission.

Micro Radio Altimeter MY-2001

The MY-2001 altimeter is a new-generation radar altimeter designed for small missile aircraft; as a compact, full-function radio altimeter that meets aerospace standards, it serves as a key component 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-2001 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 to ensure good product inheritance; moreover, built on a closed-loop tracking system, it integrates digital control technology, microwave integration technology, and hybrid integration technology to realize product miniaturization.

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.

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.

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.

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.

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.

Small Radio Altimeter MY-28A、MY-24(XXX-28A、XXX-24)

The MY-28A and MY-24 (also designated as XXX-28A and XXX-24) are miniaturized C-band full-function radio altimeters that comply with aerospace standards. Serving as key components for the control of the longitudinal altitude channel, they are specifically designed for a certain type of UAV target. These altimeters possess excellent anti-interference performance and electromagnetic compatibility, enabling them to accurately measure altitude relative to the sea surface or the ground.
The MY-28A and MY-24 are developed following the three core design principles of serialization, standardization, and modularization. This design approach endows the products with strong design inheritance, ensuring they are mature and reliable in operation. To date, these two models of radio altimeters have been widely applied in multiple types of aircraft, with their total deployment quantity exceeding 800 units.