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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.

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Description

Main Technical Parameters

  •  Working frequency: C-band;
  • Transmitting power: ≤ 2W;
  • Height range: 30m ~ 300m;
  • Fixed height binding grading interval: 1m;
  • Height accuracy: ≤ 2m;
  • Fall angle: – 70° ~ – 90°;
  • Falling speed: 700m/S;
  • Power supply: +18V ~ 36V;
  • Current consumption: no more than 0.5A;
  • Size: no more than 120mm×80mm×36mm;

 

Adapt to the Environment

  • Operating temperature: -40℃~+60℃;
  • Storage temperature: -55℃~+65℃;
  • Relative humidity: ≤95%;

 

Communication Interface

  • Interface form: RS422 interface;
  • Communication rate: 460800bps.

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