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SkyTraq Technology, Inc.
Preliminary Draft www.skytraq.com.tw
Features
⚫
230 acquisition/tracking channels
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Support global GPS, Beidou, Galileo, GLONASS
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Supports regional QZSS, SBAS
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16 million time-frequency hypothesis testing
per sec
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-148dBm cold start sensitivity
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-165dBm tracking sensitivity
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29 second cold start TTFF
⚫
3.5 second TTFF with AGPS
⚫
1 second hot start
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2.0m CEP accuracy
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Multipath detection and suppression
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Jamming detection and mitigation
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5nsec (1-sigma) timing accuracy
⚫
Position hold mode for GNSS timing operation
⚫
1PPS generation with 1 satellite in view
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Works with active and passive antenna
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On board active antenna short protection
⚫
On board active antenna detection
⚫
Complete receiver in 12.2mm x 16.0mm size
⚫
Operating temperature -40 ~ +85ºC
⚫
Pb-free RoHS compliant
Applications
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Timing reference
⚫
Precise Frequency Generation
L1 Quad Constellation
Precision Timing Mode
GNSS Receiver Module
PX1120T is a single chip, quad GNSS receiver targeting
precision timing applications. The PX1120T is capable of
using GPS, GLONASS, Galileo, Beidou, QZSS, and SBAS signal
to provide precise 1PPS signal generation in a single
compact SMD module. It is fully autonomous such that once
power is applied, the receiver automatically searches,
acquires and tracks satellite signals. When a sufficient
number of satellites are tracked with valid measurements,
the receiver produces position, velocity, and date/time
output along with 1PPS signal.
Global quad-constellation GNSS signal receiving capability
enables using greater number of satellite signal than
GPS/GLONASS dual-constellation receivers. The increased
satellite number offers superior performance in challenging
urban canyon environments.
Single-chip Phoenix positioning engine is inside the receiver
module. It features high sensitivity and fast TTFF. PX1120T
can acquire, track, and get position fix autonomously in
difficult weak signal environment. Its high tracking
sensitivity allows continuous operation in nearly all outdoor
application environments. The high performance signal
parameter search engine is capable of testing 16 million
time-frequency hypotheses per second, offering fast signal
acquisition and TTFF speed.
The receiver module contains SAW filter and a notch filter
to remove out-band interference and LTE B13 signal at the
RF input prior to the first stage LNA. This configuration
allows normal operation even under strong RF interference
when cellular modem is near the PX1120T.
PX1120T is backward pin-to-pin compatible with earlier
SkyTraq 12.2mm x 16.0mm form factor GNSS module,
allowing very easy migration.