Full function radio altimeter FMK-4

FMK-4 altimeter is a kind of full-function radio altimeter in line with aerospace standards. It is a key component for longitudinal altitude channel control. It can be widely used in cruise missiles and aircraft to measure the height relative to the sea or the ground. FMK-4 adopts linear modulation coefficient to adapt to height change technology and echo signal narrow-band receiving technology, which improves the product's anti active interference ability; adopts coherent local oscillator mixing, which has superior anti same frequency asynchronous interference performance; adopts echo signal spectrum front detection technology, which improves the tracking accuracy; adopts seriation, standardization and modularization design, which has good product inheritance Mature and reliable.

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Product serial number

FMK-4

型号:

FMK-4

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★Main electrical performance

* Operating frequency: 4300 ± 100MHz;

* Radiation power: 23 ~ 26dBmW;

* Receiving sensitivity: better than - 90dBmW;

* Height measurement capacity: no less than 3000m;

* Altimetry accuracy:

±0.6m　　　　　　　0.5m﹤H≤10m ;

±(0.3+0.03×H) m 　10m﹤H≤10000m ;

* Adaptive flight attitude: ± 30° in pitch and ± 30° in roll;

* Horizontal velocity: 0-3 mach;

* The power supply DC is 18 ~ 36V, and the consumption current is not more than 0.8A;

* Working temperature: - 40 ～+ 60 ℃

* Output form: RS422

★Mechanical parameters

Dimension and weight of each part of altimeter

Serial number	Name	Size	Weight(kg)
1	Measurement and control unit	Body size:160mm×86mm×67mm	≤1.5
2	Antenna	192mm×54mm×6mm;(without SMA connector)	≤0.2×2
3	Feeder	Transmission feeder length:2800mm	≤0.15
4	Feeder	Receiving feeder length:2800mm	≤0.15