LDR80K1 1064 nm Product Documentation

Ranging and laser designation

Laser diode array

1.064 μm

Average single-pulse energy per designation cycle ≥ 80 mJ

Within one designation cycle, the single-pulse energy variation shall not exceed 10% of the average energy (over the full temperature range, with statistics taken 2 s after laser emission starts).

≤ 0.30 mrad

15 ns ± 5 ns

Parallelism error between the optical axis and the mounting reference: ≤ 0.5 mrad.

• Minimum measuring distance: ≤ 300 m
• Maximum measuring distance: ≥ 10 km(for a 2.3 m × 2.3 m target with diffuse reflectance ≥ 0.2, visibility ≥ 23 km, and relative humidity ≤ 70%)
• Ranging rates: 1 Hz, 5 Hz, single-shot
• Ranging accuracy: ≤ 5 m
• Probability of correct ranging: ≥ 98%
• Continuous ranging operating time: 5 min(At 5 Hz: continuous operation for 5 min, rest time ≤ 3 min, then ranging can be continued.)

• Nominal designation repetition rate (for verification): 20 pps
• Short designation mode: each cycle has 17 s of designation time and 30 s interval; up to 8 consecutive cycles
• Long designation mode: each cycle has 60 s of designation time and 45 s interval; up to 4 consecutive cycles
• After completing one long and one short designation cycle, the interval before the next designation shall be within 30 minutes.

• Meets the weapon system coding requirements and provides user-programmable code expansion capability.
• Supports external synchronization input; the external signal can control the laser emission pattern for coding.
• Coding method: precise frequency code (eight groups of pre-stored period-code patterns).
• Coding accuracy: ≤ 2.5 μs.

≤ 116 mm × 52 mm × 96 mm

≤ 680 g

• Input voltage: DC 18 V to 32 V
• The electrical and electronic components inside the laser rangefinder/designator are compatible with the system power characteristics.
• Average power: ≤ 80 W; peak power: ≤ 120 W
• After PCB design and debugging are completed, all circuit boards are coated with conformal coating to provide moisture, salt-spray and fungus protection.

• When sharing the same power supply with motor or other inductive loads, the laser rangefinder/designator should use a soft-start (3–5 s). At the instant of sudden power-on, the induced voltage generated by motors and other inductive loads at the module input may be several times the nominal input voltage, which can cause over-voltage damage.
• During power-up, it is recommended to use the dedicated power-on control function of the laser rangefinder/designator to stagger its power-on time from other loads. After other loads have powered up and stabilized, then enable power to the rangefinder/designator.
• The power input of the laser rangefinder/designator should be isolated from other inductive loads. If conditions allow, a DC filter (30 V / 10 A) can be added at the module’s power input.
• The power supply for the laser rangefinder/designator shall satisfy the peak power demand. When testing the module alone, with a DC supply voltage of 24 V, the supply current should be greater than 6 A. If the output voltage is lower, the rated output current of the supply should be increased accordingly.

High-Temperature Requirements

• Operating temperature: ≤ +55 °C
• Storage temperature: ≤ +65 °C

Low-Temperature Requirements

• Operating temperature: ≥ −40 °C
• Storage temperature: ≥ −45 °C

The equipment shall withstand flight-induced vibration and shocks occurring during takeoff and landing. All components shall also meet the environmental conditions of vehicle transport.

Vibration spectrum:

• From 15 Hz to 33 Hz, constant-displacement sinusoidal vibration with amplitude 0.91 mm;
• From 33 Hz to 700 Hz, constant-acceleration sinusoidal vibration with amplitude 2 g.

Duration: 1 hour per axis in three orthogonal directions (X, Y, Z).

Test conditions:
The product shall be mounted on the vibration platform in its normal operating configuration and powered on during testing.
After vibration testing, the equipment shall operate normally.

• Vertical axis: ≥ 10 g
• Lateral axis: ≥ 10 g
• Longitudinal axis: ≥ 10 g
• Shock waveform: post-peak sawtooth, duration 11 ms; applied along X, Y, and Z axes, both directions on each axis, 18 shocks in total.
• Test conditions:
  The product shall be mounted on the shock test platform in its normal operating configuration and powered on during testing.
  After shock testing, the equipment shall operate normally.

1. 

+28V

Input

The power supply characteristics comply with the relevant requirements of MIL-STD-810G.

Power Supply

+28V

+28V

+28V_GND

+28V_GND

+28V_GND

7. 

Power-On Control (+)

Input/Output

Refer to the requirements specified in the Power-On Control section.

I/O Control

Power-On Control (-)

9. 

RS422_RX+

Input/Output

The logic level and drive capability comply with the RS-422 interface standard.
Characteristic impedance: 120 Ω.

The transmit/receive pin definitions correspond to the laser rangefinder itself.

RS422_RX-

RS422_TX+

RS422_TX-

RS422_GND

14. 

External Synchronization Control Signal

Input

The logic level and drive capability comply with the RS-422 interface standard.

External synchronization signal used to control laser coding.

External Synchronization Control Signal (–)