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Level 5
Level 5
Distributor - Macnica (Japan)

Hi everyone

Regarding BGT60TR13C, I found out how to calculate the distance resolution from "Radar SDK Documentation",

Could you tell me how to calculate the angular resolution?

Thanks

Yang

1 Solution

## Re: [BGT60TR13C] About angular resolution

Moderator
Moderator

Hi,

As shown in the picture, Rx1 and Rx3 & Rx2 and Rx3 forming a "L" shape array, and can detect angle from two directions with same

λ =  1/f = 1/(60GHz) = 5mm;

d = 2.5mm;

N = 2.

So, the

Neo Lu

4 Replies

## Re: [BGT60TR13C] About angular resolution

Moderator
Moderator

Hi,

As shown in the picture, to realize the measurement of AoA(angle of arrival), we need at least 2 RX antennas.

Considering that the distance between the target object and the sensor is much larger than the distance between antennas, we can approximate that the beams arriving at the two antennas are parallel, so the azimuth of the beams can be calculated as:

α:"angle of arrival, " ∆φ": phase deviation", λ:"max wavelength," d": antenna spacing".

When we talk about the angular resolution, we should know that we detect the angle by measure the "phase deviation". In other words, the angular resolution depends on the measuring resolution of "phase deviation".

Finally, the angular resolution can be calculated as:

Neo Lu

## Re: [BGT60TR13C] About angular resolution

Level 5
Level 5
Distributor - Macnica (Japan)

Hi Neo

Could you tell me how to calculate the angular resolution

when the three antennas R1, R2, and R3 are L-shaped?

Thanks

Yang

## Re: [BGT60TR13C] About angular resolution

Moderator
Moderator

Hi,

As shown in the picture, Rx1 and Rx3 & Rx2 and Rx3 forming a "L" shape array, and can detect angle from two directions with same

λ =  1/f = 1/(60GHz) = 5mm;

d = 2.5mm;

N = 2.

So, the

Neo Lu

## Re: [BGT60TR13C] About angular resolution

Level 5
Level 5
Distributor - Macnica (Japan)

Hi Lu