User's Manual

16 P412 User’s Manual & Data Sheet
Dynamic Range:
Integration: 1 (instantaneous)
30 dB
Integration: 16:1 (PII=4)
42 dB (Min Ranging Integration)
Integration: 64:1 (PII=6)
48 dB (Min Radar Integration)
Integration: 1024:1 (PII=10)
60 dB (Max Ranging Integration)
Integration: 32768:1 (PII=15)
75 dB (Max Radar Integration)
Pulse Repetition Rate
(Nominal)
10
MHz
RF Communications
Channelization:
7 user selectable pseudo
-
random pulse interval
channels. Others available for special applications.
Raw Data (Symbol) rates:
See Table 3:
Max Range (
max
FCC Part 1
5
transmit power, standard
Broadspec Antennas, free
space, thermally noise limited
environment, clear line of
sight)
See Table 3:
Comms type:
Packet transmission
Max user bytes/packet:
1024
Pulse integration rates (PII):
4 (16:1), 5
(32:1), 6 (64:1), 7 (128:1) 8 (256:1),
9 (512:1), 10(1024:1)
Ranging
Performance
Ranging techniques:
Pulsed Two
-
Way Time
-
of
-
Flight (TW
-
TOF),
Coarse Range Estimation (CRE)
Two
-
Way Time
-
of
-
Flight
Line of Sight Range Performance
See Note 1
Precision (Standard Deviation)
2.3 cm
Accuracy (Bias error):
2.1 cm
Range Update Rate
See Table 3
Non
-
Line of Sight Performance
See Note 2
Coarse Range Estimation (LOS only
)
See Note 3
Range update rate
See Table 3
Table 1: P412 performance characteristics
Note 1: Precision and Accuracy in LOS conditions. The Line of Sight (LOS) Precision and
Accuracy specification is based on a measurement campaign that included 20,000 range
measurements taken in an open field, over an operating range that varied from 2 ft. to 300 ft., for PIIs
4 through 8 inclusive, at minimum and maximum transmit gain, when the received signal was linear
and also when it was in compression. The quoted values are the results of the composite of all of the
measurements. This includes combinations of settings that may not be reasonable (e.g., operation at
minimum range and maximum transmit power). It is believed to be a conservative estimate of the
system’s ranging Precision and Accuracy. When averaging many range measurements, users have
reported precisions on the order of a few millimeters.
Note 2: Precision and Accuracy in NLOS conditions. Time Domain does not have a specification
for accuracy in Non-Line of Sight (NLOS) environments. This is because of the wide variety of
conditions that can be encountered. For example, if one is measuring range inside a building that is