LR160 High-Precision 1064nm Laser Ranging Module for Target Acquisition and Surveillance

TECHNICAL SPECIFICATIONS

OUTLINE DIMENSION(mm)

PIN INTERFACE

1. The electrical connection interface consists of the J30J-21ZKPand J30J-04ZK
   The interface definitions are as follows:

Table 1 — J30J-21ZKP Interface Definition

Table 2 — J30J-04ZK Interface Definition

1. Power Supply Interface:+24 VDC ±10%
2. External Trigger:RS-422 differential signal
3. Cooling Method:Cooling fan located at the front of the device

Product Description

LR160 1064nm 160 mJ Long-Range Laser Target Designator & Rangefinder

The LR160 is a high-energy 1064 nm laser target designator and rangefinding system designed for modern fire-control, reconnaissance and long-range surveillance platforms. It combines 160 mJ pulsed laser illumination, long-range distance measurement and flexible coding modes in a single rugged unit, enabling engagement of NATO-standard targets at distances up to 30 km and laser designation up to 20 km. With a beam divergence ≤ 0.2 mrad, the LR160 maintains a tight, high-energy spot on target even at extreme ranges.

The laser source operates at 1064 nm ± 1 nm with selectable energy levels of 85 mJ and 160 mJ, pulse width 10–15 ns and power stability ≤ 8%. Emission frequency is adjustable from 8 to 21 Hz, with a typical center frequency of 20 Hz for designation. The system supports both internal and external trigger modes, with external synchronization using an RS-422 differential signal and a calibrated trigger-to-emission delay of 304.0 µs ± 0.1 µs, allowing precise alignment with fire-control computers, seekers and other mission systems.

As a rangefinder, the LR160 provides a measuring range from a few hundred meters out to ≥ 30 km for a 10 m × 10 m × 8 m diffuse target (reflectance ≥ 0.2, visibility ≥ 30 km, relative humidity ≤ 70%). The ranging frequency is 10 Hz with up to three targets per measurement, and the system supports first, second and last-target selection to handle cluttered backgrounds or partially obscured objects. Range accuracy is ≤ 5 m with a correct-range probability of 98%. Under low- and normal-temperature conditions, the LR160 can operate continuously for 5 minutes at 10 Hz, followed by a 4-minute rest; high-temperature duty cycles are adjusted according to selected energy level (85 mJ or 160 mJ) to protect the laser head.

In illumination/designation mode, the center frequency is 20 Hz. At 85 mJ output, the LR160 supports 90 s of continuous illumination with 60 s intervals for five consecutive cycles at low or normal temperatures; at 160 mJ, it supports 60 s illumination with 60 s intervals for five cycles. At high temperature, the duty cycle is reduced: 90 s/60 s for one cycle at 85 mJ, or 60 s/60 s for one cycle at 160 mJ. After irradiation cycles are completed, a mandatory rest period (15 minutes in system operation guidelines) ensures thermal stability and lifetime. The LR160 uses both precise frequency coding and time coding, with period accuracy better than ±1 µs, meeting the timing requirements of modern laser-guided munitions and cooperative engagement systems.

The system is controlled through a robust RS-422 serial interface using a structured command/response protocol with EB 90 frame headers, length, command, data and checksum fields. Commands cover laser start/stop, single and continuous ranging (1–25 Hz configuration range for firmware), external trigger delay setting, distance gate setting/query, internal illumination period and cycle configuration, time-code programming, internal/external trigger switching, LD current and Q-delay configuration, APD and Q-high-voltage setting, receiver on/off, fan temperature thresholds, automatic/manual mode selection, temperature-parameter read/write and firmware upgrade. Status frames report up to three target distances, environment and LD temperatures, and detailed state words for trigger mode, ready/standby status, sensor health, over-temperature alarms, LD current option and receiver status, supporting comprehensive remote diagnostics and health monitoring.

Mechanically, the LR160 is built for integration on UAV EO/IR gimbals, manned aircraft pods, armored vehicle turrets, coastal-defense posts and border-surveillance systems. The overall envelope is ≤ 306 × 145 × 94 mm, and the system weight is ≤ 3.3 kg, offering a favorable size-weight profile for 30 km-class performance. Power is supplied via a J30J-04ZK connector at 24 V DC ± 10% (typically 24 V ± 4 V), with separate +24 V and GND pins for current sharing and low-impedance routing. A J30J-21ZKP connector provides RS-422 TX/RX lines, enable lines (EN+/EN–), external sync A/B inputs, and a 5 V LED supply for status indication. A dedicated enable input allows the host to switch module power independently.

Environmentally, the LR160 is specified for operation from −40 °C to +60 °C and storage from −45 °C to +65 °C. It is designed to operate after exposure to low- and high-temperature extremes, and the mechanical configuration supports active cooling via a front-mounted fan. Combined with ERDI’s system-level experience in 1064 nm designators and long-range rangefinders, the LR160 provides a powerful, field-ready core for long-range targeting, guidance and surveillance architectures.