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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.

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Description

Main Electrical Performance

  • Operating frequency: 4300 ± 100MHz;
  • Radiation power: 20 ~ 24dBmW;
  • Receiving sensitivity: better than – 85dBmW;
  • Height measurement capacity: no less than 3000m;
  • Altimetry accuracy: ±0.6 m, 0.5m﹤H≤10m; ±(0.3+0.03×H) m, 10m﹤H≤3000m;
  • Adaptive flight attitude: pitch ± 30° or roll ± 35°;
  • Horizontal velocity: 0-3 mach;
  • The power supply DC is 18 ~ 36V, and the consumption current is not more than 0.8A;
  • Working temperature: – 55 ～+ 60 ℃;

 

Electrical Interface

  • Type of RF connector: BMA conforms to iec61169-33 radio frequency connectors Part 33: Sectional specification for BMA Series RF connectors;
  • Data connector form: DB9;
  • Data output signal form: hy-919 radio altimeter conforms to Vita’s 6U double high module standard, can communicate with controller through can, 429, 422, 485 communication interface, transmission form: baud rate 19200bps; data update time 10ms; transmission cycle: 1 frame/10ms.

6U Module Radio Altimeter MY-919

 

Mechanical Parameters

Dimension and weight of each part of altimeter

Serial number Name Size Weight(kg)
1 Measurement and control unit Maximum appearance: 233mm×160mm×24mm ≤1.5
2 Antenna 120mm×100mm×6mm; (Excluding SMA connectors) ≤0.15×2
3 Feeder Transmission feeder length: 2800mm ≤0.15
4 Feeder Receiving feeder length: 2800mm ≤0.15

 

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