1570nm Laser Rangefinder-25K50
Parameters
|
Parameters |
Specification |
Note. |
|
Wavelength |
1570±5nm |
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|
Ranging capability |
200m~25km |
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|
Ranging ability
|
≥25km(2.3m×2.3m, 0.3 reflectivity vehicle, visibility≥35km) |
Humidity≤80%
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|
≥50km(for large targets, visibility≥40km) |
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Ranging accuracy |
±5m |
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|
Ranging repetition rate |
1~10hz(adjustable) |
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|
Accuracy |
≥98% |
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|
Divergence angle |
≤0.6mrad |
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|
Receiving aperture |
67mm |
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|
Communication interface |
RS422 |
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|
Supply voltage |
DC18~32V |
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|
Operating power |
≤50W(@1hz) |
Tested under room temperature |
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Stand-by power |
≤20W |
Tested under room temperature |
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Dimension |
≤215mm×126mm×81mm |
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|
Weight |
≤2.5kg |
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|
Temperature |
-40℃~65℃ |
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|
Heat-dissipating |
By fan |
|
Line NO. |
Definition |
Note. |
|
1 |
Direct current |
+24V Direct current |
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2 |
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3 |
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4 |
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5 |
GND(direct current) |
+24V GND |
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6 |
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7 |
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8 |
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|
9 |
Serial port T+（from a laser rangefinder to upper computer+） |
RS422 |
|
10 |
Serial port R-（from upper computer to a laser rangefinder-） |
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|
11 |
Serial port T-（from a laser rangefinder to upper computer-） |
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|
12 |
Serial port R+（from upper computer to a laser rangefinder+） |
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|
13 |
RS422 GND（connection is not necessarily required） |
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|
14 |
SYN+ |
RS422 differential external trigger, width＞10us |
|
15 |
SYN- |
Targets and condition requirements
Visibility≥35km
Humidity≤80%
For vehicles with 2.3m×2.3m dimension
Reflectivity=0.3
Ranging ability≥25km
Analysis and verification
The main parameters that affect ranging ability are peak power of lasers, divergence angle, transmitting and receiving transmittance, wavelength of laser, etc.
For this laser rangefinder, it takes≥3MW peak power of lasers, 0.6mrad divergence angle, 1570nm wavelength, transmitting transmittance≥90%, receiving transmittance≥80% and 67mm receiving aperture.
It is a laser rangefinder for small targets, ranging ability can be calculated by the following formula. Ranging formula for small targets：
As long as detectable optical power that reflected by targets is larger than minimum detectable power, a laser rangefinder is able to range distance to a target. For a laser rangefinder with 1570nm wavelength, generally, the minimum detectable power(M.D.S) of APD is 5×10-9W.
Under 35km visibility with 27km distance to targets, the minimum detectable power is lower than M.D.S of APD(5×10-9W), therefore, under a condition with 35km visibility, a laser rangefinder can range distance for (2.3m×2.3m) targets up to 26~27km(might be close or less than 27km).
|
Line NO. |
Definition |
Note. |
|
1 |
Direct current |
+24V Direct current |
|
2 |
||
|
3 |
||
|
4 |
||
|
5 |
GND(direct current) |
+24V GND |
|
6 |
||
|
7 |
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|
8 |
||
|
9 |
Serial port T+（from a laser rangefinder to upper computer+） |
RS422 |
|
10 |
Serial port R-（from upper computer to a laser rangefinder-） |
|
|
11 |
Serial port T-（from a laser rangefinder to upper computer-） |
|
|
12 |
Serial port R+（from upper computer to a laser rangefinder+） |
|
|
13 |
RS422 GND（connection is not necessarily required） |
|
|
14 |
SYN+ |
RS422 differential external trigger, width＞10us |
|
15 |
SYN- |
Targets and condition requirements
Visibility≥35km
Humidity≤80%
For vehicles with 2.3m×2.3m dimension
Reflectivity=0.3
Ranging ability≥25km
Analysis and verification
The main parameters that affect ranging ability are peak power of lasers, divergence angle, transmitting and receiving transmittance, wavelength of laser, etc.
For this laser rangefinder, it takes≥3MW peak power of lasers, 0.6mrad divergence angle, 1570nm wavelength, transmitting transmittance≥90%, receiving transmittance≥80% and 67mm receiving aperture.
It is a laser rangefinder for small targets, ranging ability can be calculated by the following formula. Ranging formula for small targets：
As long as detectable optical power that reflected by targets is larger than minimum detectable power, a laser rangefinder is able to range distance to a target. For a laser rangefinder with 1570nm wavelength, generally, the minimum detectable power(M.D.S) of APD is 5×10-9W.
Under 35km visibility with 27km distance to targets, the minimum detectable power is lower than M.D.S of APD(5×10-9W), therefore, under a condition with 35km visibility, a laser rangefinder can range distance for (2.3m×2.3m) targets up to 26~27km(might be close or less than 27km).
