UAV Altimeter Radar NRA15

austarsmodel@yahoo.com (Austars Model Pty Ltd) — Tue, 17 Mar 2026 08:43:39 +0800

NRA15 is a compact radar altimeter with the advantages of 4cm measuring accuracy, small size, high sensitivity, light weight, easy integration and stable performance, which satisfies the application requirements in unmanned aerial vehicle (UAV), helicopters, small airships and other field. Its product performance has been recognized by many partners.

Features：

Detect moving targets
Adaptable for grasslands and other environment
With UART interface
With measurement accuracy of 0.1m
With the measurement range of 100m
RoHS compliant

Application：

Safety range measurement and collision avoidance in UAVs

SPECIFICATIONS

System performance
Update rate	40Hz	Modulating waveform	FMCW
Interface	CAN/UART
Measuring performance
Distance range	0.5~100m	Ranging accuracy	±0.1m
Beam width（azimuth angle）	41�	Beam width（elevation angle）	37�
Operating conditions
Operating voltage	5~16V DC	Power Consumption	1.1W
Operating temperature	-40~+85℃	Storage temperature	-40~+85℃
Protection rating	IP66 *The rating is not permanently effective and may decrease due to product wear and tear.
Housing
Overall dimensions (LxWxH)	102 × 56 × 16.5mm	Weight	81g
Certification	RoHS

*The mmWave radar function is unavailable in some countries/regions. Please refer to local laws and regulations for details.

ADVANTAGES

High Precision, Low Power Consumption

Adopting an integrated MMIC solution, it features ultra-low power consumption (1.1W), compact size(102×56×16.5mm), and ±0.1m distance accuracy. Its lightweight design meets the high-performance and environmental adaptability requirements for applications like agricultural drones and delivery drones in altitude measurement scenarios.

Easy to Use, Adapts to Complex Terrains

Equipped with universal interfaces (UART/CAN), it can be quickly integrated with upper-level computers or other MCUs.
The advanced single-transmit single-receive integrated planar microstrip array antenna minimizes interference from ground clutter and out-of-beam targets, significantly improving the signal-to-noise ratio. It operates stably in complex terrains such as grasslands and water surfaces.

Specifications:

Application in UAV altimeter

1) Accurate weight of UAVs/Challenges in terrain following

Complex terrain is a major obstacle to UAV flight. And the precise height and terrain tracking can ensure a stable flight and the successful fulfillment of mission.

2) Difference between mmw radar altimeter and traditional altimeter

Typical application example-Altimeter in plant protection UAVs

Plant protection unmanned aerial vehicle can be remote controlled, to prevent spraying workers from exposure to pesticide, which could ensure the safety of spraying operations, and the efficient and fast operations save a lot of manpower and resources. Plant protection unmanned aerial vehicle is required to maintain a minimum fixed height of 1 ~ 2m from the crops, without restrictions on terrain and height. According to the terrain, it could automatically set the height, and avoid the obstacles automatically by adjusting the height.

NRA15 is an altimeter specially designed for plant protection UAVs. With its flexible installation position, it is suitable for all types of UAV platforms. It can accurately sense the height of UAVs and vegetation, and transmit the UAV data to UAV flight control system through UART serial port, to achieve and maintain the flight in the appropriate altitude to vegetation.

About Radar Working Principle

Radar sensors operate by transmitting low power electromagnetic energy. Any energy that strikes an objectreflects a certain amount of this energy back to the radar sensor.

If the returned energy is of sufficient magnitude, it is used to indicate object presence and determine the object's distance, angle, speed.

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UAV Altimeter Radar NRA15