FD-MS360 Dual-Beammechanical Scanning Sonar

FD-MS360 Two-dimensional Scanning Sonar

Technical Specification

1. Purpose of the Equipment

The FD-MS360 two-dimensional scanning sonar is a single-beam or dual-beam mechanical scanning imaging system that provides omnidirectional acoustic imaging around targets in both clear and turbid water environments. It enables functions including target detection, identification, collision avoidance, and obstacle detection. Key features include low cost, compact size, lightweight design, and low power consumption. The hermetic, oil-filled housing has no external rotating parts, effectively preventing risks of sand clogging bearings and marine vegetation entanglement.

The base model of FD-MS360 is a single-beam scanning sonar, achieving full-angle detection through the rotation of a single beam. Customers can order the-DS option, which simultaneously features two beams with a 180-degree phase difference, thereby doubling the scanning efficiency for 360-degree omnidirectional detection compared to the base model.

The FD-MS360 sonar is available in three frequency options: 700kHz, 1.2MHz, and 1.8MHz, with the choice determined at order placement. The standard model operates effectively at depths of up to 300m and 1.5km. For deeper operational requirements, please contact our company. 

2. Technical Specifications

2.1. Sonar Technical Specifications

(1)Center frequency ：700kHz, 1.2MHz or 1.8MHz, with other frequencies available upon request.

(2) For details on the detection range, central beam width, and opening angle, please refer to the table below (the maximum detection range applies to strongly reflective targets such as rocks, coastlines, etc., under conditions of clear water, flat sandy seabed, good or moderate hydrological conditions, and a speed of <6 knots):

Note：

1. The horizontal 3dB energy distribution angle of the target formed by the horizontal and vertical center points of the sonar is allowed to have an error of +10%/-30%.

2. The sonar's field of view. Large targets within this angle can be observed by sonar, but the resolution, clarity, and detection range at the edges may be lower than at the center.

3. The detection range of high reflectivity objects such as embankment and bridge pier in seawater under good hydrological conditions is about 1~2 times of that in fresh water under the same conditions.

(1) Range resolution: Minimum 2mm, range-dependent;

(2)Range: 1~100 meters, continuously adjustable;

(3)Transmission mode: CW or CHIRP, with automatic or manual selection;

(4)Maximum operational water depth: 300 meters (1.5 kilometers);

(5)Working blind spot: ≤0.2m;

(6) Scanning speed: up to 20 lines per second (20 lines/s), adjustable from 0.1°/s to 30°/s via software.

(7) Scanning mode: Panoramic or Sector scan;

2.2. Electrical Interfaces

(1) Input voltage: 12 to 36VDC;

(2) Power consumption: The average power is approximately 3W, with peak power below 20W.

(3)Communication interface：RS-485 half-duplex isolation (460800 bps) and RS-232 full-duplex isolation(115200bps), or 100Mbps Ethernet, as specified at the time of order.

(4)External connectors: 1 waterproof connector for signal and power transmission;

2.3. Mechanical Specifications

(1)Volume (diameter × height, excluding cable): 88 (±1) x 46 (±1) mm;

(2)Weight (air / water, excluding cable):

300m type: approximately 385g/140g;

1.5km type: approximately 800g/550g;

(3) Installation: Secure with M4 screws on the underside.

(4) Outer shell materials: engineering plastics, composite materials, and 316 stainless steel.

(5)Color:The engineering plastics and composite materials are black, while the metal parts are left in their original color.

(6)The surface is smooth without burrs or sharp edges.

3. Mechanical dimensions of appearance

4. Connectors and Definitions

4.1. Connector and Description

The external cable adapter socket is mounted on the rear of the sonar system for serial port and power supply. Note: The connector does not support end-face sealing, and waterproofing is only achieved when the plug and socket are assembled.

4.2. Connector Pin Definitions

4.2.1. RS-485 Version:

Note: A 120Ω termination resistor is included between TRX+ and TRX-

4.2.2. RS-232 Version:

4.2.3. Ethernet version:

5. Coatings, Markings, Packaging and Transportation

5.1. Surface Treatment and Corrosion Protection

(1)The sonar surface is constructed from engineering plastics or 316 stainless steel, providing exceptional corrosion resistance.

(2)The sonar can operate continuously in seawater for weeks without maintenance. However, regular inspection for aquatic biofouling and timely cleaning are essential to prevent performance degradation. After each submersion, thoroughly rinse the device with clean water and dry it completely.

(3)Sonar should not be exposed to direct sunlight for extended periods, as this may significantly reduce its lifespan.

(4)The sonar system employs an oil-filled design. Should any cracks or oil leakage be detected, immediate factory repair is required.

(5)If you require products capable of long-term underwater operation, please specify this requirement during the ordering process. Our company will then utilize specialized materials and manufacturing techniques.

5.2. Packaging and Labeling

(1)The sonar uses polypropylene aviation boxes as its outer packaging, offering shockproof, waterproof, and drop-resistant features.

(2)The sonar model and specifications are printed on both the sonar surface and the packaging box, with a sonar nameplate affixed to the exterior of the box.

(3)The package includes: the sonar host, a 5-meter waterproof cable (standard with sonar connector), user manual, software USB drive, and test report.

5.3. Transportation

The sonar can be transported by common railway, highway and air.