NS-87模组

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1.1. Overview
Product Introduction
The NewStar NS-87 series GPS modules incorporates high sensitivity, high
performance UBLOX G7020 chipset solution in a compact design. The module
tracks
up to 56 satellites at a time while offering fast time-to-first-fix and 1Hz navigation
update. The unit is very suitable for broad applications such as Handheld, PDA,
PPC or other battery operated navigation system.
Main Features
■ High sensitivity UBLOX G7020 chipsets.
■ High performance receiver tracks up to 56 satellites.
■ TTL output for GPS command interface.
■ Low power consumption.
■ Average Cold Start time under 29 seconds.
■ Reacquisition time 0.1 second.
■ Support accurate 1PPS output signal aligned with GPS timing.
■ Support Standard NMEA-0183 .
■ Multi-path mitigation hardware.
■ Built-in a lithium battery enables fast positioning.
■ Compact size (25.4×25.4×7 mm3) for easy integration into hand-held devices.
The NS-87 design utilizes the latest surface mount technology and high level circuit
integration to achieve superior performance while minimizing dimension and power
consumption. This hardware capability combined with software intelligence makes
the board easy to be integrated and used in all kinds of navigation applications or
products. The module communicates with application system via RS232 (TTL level)
with NMEA-0183 protocol.
2. Technical Specifications
2.1. Electrical Characteristics
2.1.1 General
Frequency
C/A code
Channels
2.1.2 Sensitivity
Tracking
2.1.3 Accuracy (Open Sky)
错误！超链接引用无效。
Position
Time
2.1.4 Datum
Default
2.1.5 Acquisition Rate
Hot start
Warm start
Cold start
Reacquisition
2.1.6 Dynamic Conditions
Altitude
Velocity
Acceleration
Jerk
2.1.7 Power
Main power input
Supply Current
Backup Power
L1, 1575.42 MHz
1.023 MHz chip rate
56 channels all in view tracking
-162 dBm typical
< 10 meters, 2D RMS
< 7 meters 2D RMS, WAAS corrected
1-5 meters, DGPS corrected
1 microsecond synchronized to GPS time
WGS-84
1 sec, average
28 sec, average
29 sec, average
0.1 sec, average
< 18,000 meters (60,000 feet)
< 515 meters/sec (1000 knots)
< 4 G
3.0 ~ 5.5 VDC input.
< 80 mA
3V rechargeable Lithium battery,
up to 500 hours discharge
2.1.8 RF Interface
Antenna connector type MMCX
2.1.9 Serial Port
Electrical interface
Protocol message
Default NMEA
2.1.10 Time
2.1.11 Weight
Two full duplex serial communication, via RS232,
TTL interface.
NMEA-0183.
GGA, GSA, GSV, RMC, (GLL, VTG, and ZDA
optional).
9600 baud rate (other rate optional).
8 bits data, 1 stop bit, no parity.
1PPS Pulse, Pulse duration 100 msec.
Time reference at the pulse positive edge.
Synchronized to GPS time, ±1 microsecond.
< 8g
2.1.12 Recommended External Antenna Specification
Gain
Noise figure
Current
Operating Voltage
20 dB min (cable loss included)
1.5 dB typical
10 mA typical
Confirmed to spec 3.3 ~ 5.5 V
Survival 3.0 ~ 3.3 V
2.2. Environmental Characteristics
Operating temperature range
Storage temperature range
-40 oC to +85 oC
-45 oC to +100 oC