Altina GBT708 ユーザーズマニュアル
¾ Small, sleek, and lightweight design easily fits on your hand
¾ Enhanced algorithms -SnapLock and SnapStart provide superior navigation,
¾ Enhanced algorithms -SnapLock and SnapStart provide superior navigation,
performance in urban, canyon and foliage environments。
¾ For Car navigation, Marine navigation, Fleet management, AVL, Personal
navigation, Tracking System, and Mapping device application。
3. SPECIFICATION
3.1. Basic
Specification
¾ Chipset：
SiRF Star IIe/LP chipset
.
¾ Channels：12 parallel satellite-tracking channels.
¾ Frequency：1575.42 MHZ.
¾ Receiver：L1, C/A code.
¾ Frequency：1575.42 MHZ.
¾ Receiver：L1, C/A code.
3.2. Acquisition
Time
(averaged)
¾ Reacquisition：0.1sec.
¾ Snap
¾ Snap
start：< 3 seconds (at < 25 minutes off period)
¾ Cold
start：< 45 seconds.
¾ Warm
start：< 38 seconds .
¾ Hot
start：< 8 seconds
¾ Update
rate：1 second continuously
3.3. Receiver
Accuracy
¾ Normal：5-25 meters CEP without SA
¾ Enable EGNOS or WAAS：
¾ Enable EGNOS or WAAS：
Position < 2.2 meters, horizontal 95% of time
Position < 5 meters, Vertical 95% of time
Position < 5 meters, Vertical 95% of time
¾ Velocity：within 0.1 meters / second
¾ Time：1 microsecond synchronized GPS time
¾ Time：1 microsecond synchronized GPS time
3.4. Use
Limitation
¾ Altitude：< 18,000 meters (60,000 feet)
¾ Velocity：< 515 meters / second (700Knots)
¾ Acceleration：4G
¾ Velocity：< 515 meters / second (700Knots)
¾ Acceleration：4G
4
¾ Jerk：20 meters / second, max